Download Stakeholder Comment and Rationale Form AESO AUTHORITATIVE DOCUMENT PROCESS Stakeholder Consultation Draft

Stakeholder Comment and Rationale Form
AESO AUTHORITATIVE DOCUMENT PROCESS
Stakeholder Consultation Draft
Date: 2013-04-30
Proposed New, Amended and Removal of Alberta Reliability Standards Definitions (“Reliability Standards Definitions Update”)
Date of Request for Comment [yyyy/mm/dd]:
Period of Consultation [yyyy/mm/dd]:
2013-05-16
2013-04-30
through 2013-05-16
Comments From:
EPCOR Distribution & Transmission Inc.
Date [yyyy/mm/dd]:
2013-05-16
Definitions – New
Existing
Contact:
Travis Robinson
Phone:
780-412-3079
E-mail:
[email protected]
Proposed
Rationale
“agent” includes:
(i) a representative of a pool
participant duly appointed
and authorized by the pool
participant under section
201.2 of the ISO rules,
Appointment of Agent to act
on behalf of and bind the
pool participant with
This defined term is used in BAL002-AB-1 and BAL-STD-002-AB-0.
No definition currently exists in
the reliability standards other
than through a reference to the
ISO rules definitions.
agent
Issued for Stakeholder Consultation: 2013-04-30
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
Stakeholder Comments and/or
Alternate Proposal
AESO Reply
regard to transactions and
definition be specifically approved
other activities on the
for use in the reliability standards.
Energy Trading System and
the Automated Dispatch
and Messaging System; or
(ii) a representative of a
market participant or a
pool participant, as the
case may be, duly
appointed and authorized to
act on behalf of and bind
that person with regard to
other ISO activities,
procedures and
requirements,
which such appointment is made
under and in accordance with the
applicable ISO rules,
authorizations and procedures.
ancillary services
area control error (ACE)
“ancillary services” as defined
in the Act means those services
required to ensure that the
interconnected electric system
is operated in a manner that
provides a satisfactory level of
service with acceptable levels of
voltage and frequency.
This defined term is used in the
measures in BAL-002-AB-1 and
BAL-STD-002-AB-0.
“area control error” means the
This defined term is used in the
Issued for Stakeholder Consultation: 2013-04-30
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Page 2 of 40
bid
Commission
instantaneous difference
between actual interchange and
scheduled interchange, taking
into account the effects of
frequency bias, time error and
unilateral inadvertent
interchange if automatic
correction is part of the
automatic generation control of
the interconnected electric
system, and a correction for
metering error.
following reliability standards: BAL001-AB-0a; BAL-002-AB-1; BAL003-AB-0a; BAL-004-WECC-AB-1;
EOP-002-AB-2; INT-003-AB-2; INT009-AB-1; and TOP-005-AB1-1.
“bid” means, in respect of a pool
asset in a settlement interval, a
pool participant submission to
purchase:
(i) electric energy and includes
all of the operating blocks
the pool participant uses
for that submission; or
(ii) operating reserves from
applicable Alberta markets.
This defined term is used in TOP005-AB1-1.
“Commission” as defined in the
Act means the Alberta Utilities
Commission established by the
Alberta Utilities Commission Act.
This defined term is used in
reliability standard FAC-001-AB-0.
Issued for Stakeholder Consultation: 2013-04-30
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
Page 3 of 40
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
contingency reserve
day
“contingency reserve” means
the operating reserve used to
recover the area control error
according to WECC criteria.
This defined term is used in BAL002-AB-1 and BAL-STD-002-AB-0.
“day” means the twenty-four (24)
hour period in Alberta beginning
at 00:00:00 and ending and
23:59:59 but which:
(i) in the case of the day on
which daylight savings
begins, is twenty-three (23)
hours; or
(ii) in the case of the day on
which daylight savings ends,
is twenty-five (25) hours.
This defined term is used in the
following reliability standards: BAL002-AB-1; BAL-004-WECC-AB-1;
BAL-006-AB-1; COM-001-AB-1.1;
COM-002-AB-2a; EOP-002-AB-2;
FAC-002-AB-0; FAC-003-AB1-1;
FAC-010-AB-2.1; MOD-010&012AB-0; MOD-016-AB-1.1; MOD-018AB-0; PRC-001-AB1-1; PRC-004WECC-AB1-1; PRC-018-AB-1;
PRC-021-AB1-1; PRC-022-AB-1;
TOP-005-AB1-1; VAR-002-AB-1.1b;
VAR-002-WECC-AB-1; and VAR501-WECC-AB-1.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Because the AESO is proposing to
eventually delete the language in
Issued for Stakeholder Consultation: 2013-04-30
Page 4 of 40
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
directive
"directive" means a direction the
ISO gives to a market
participant instructing the
market participant to take any
action the ISO deems necessary
to maintain the reliability of the
interconnected electric
system.
This defined term is used in the
following reliability standards: BAL002-AB-1; BAL-STD-002-AB-0;
COM-002-AB-2a; EOP-002-AB-2;
and EOP-003-AB1-1; PRC-001AB1-1; PRC-004-WECC-AB1-1;
VAR-001-AB-1a; VAR-002-AB-1.1b;
VAR-002-WECC-AB-1; and VAR501-WECC-AB-1.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
dispatch
“dispatch” has the same
meaning as that provided in the
Act, which means a direction
from the ISO to a pool
participant to cause, permit or
alter the exchange of electric
energy or ancillary services.
Issued for Stakeholder Consultation: 2013-04-30
This defined term is used in BALSTD-002-AB-0 and FAC-010-AB2.1.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
Page 5 of 40
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
disturbance
“disturbance” means an
unplanned event which produces
an abnormal system condition or
the effects experienced by a
power system following a
contingency, such as high or
low frequency, abnormal voltage
or oscillations in the system.
This defined term is used in the
following reliability standards: BAL002-AB-1; BAL-STD-002-AB-0;
BAL-003-AB-0a; EOP-002-AB-2;
EOP-004-AB1-1; PRC-009-AB-0;
PRC-018-AB-1; TPL-001-AB-0;
TPL-002-AB-0; TPL-003-AB-0; and
TPL-004-AB-0.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
disturbance control standard
“disturbance control standard”
means a performance measure
applied to a balancing authority
or reserve sharing group for
recovering from a disturbance
within fifteen (15) minutes by
restoring area control error to
zero (0) or to its pre-disturbance
level.
Issued for Stakeholder Consultation: 2013-04-30
This defined term is used in
reliability standard EOP-002-AB-2.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Page 6 of 40
electric distribution system
emergency assistance
“electric distribution system”
as defined in the Act means the
plant, works, equipment, systems
and services necessary to
distribute electricity in a service
area, but does not include a
generating unit or a
transmission facility.
This defined term is used in the
following reliability standards: CIP001-AB1-1; EOP-003-AB1-1 and
EOP-004-AB1-1.
“emergency assistance” means
energy provided to a person
experiencing a system
emergency.
This defined term is used in
reliability standard EOP-001-AB-2b
and EOP-002-AB-2.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
e-tag
“e-tag” means an electronic
identifier which contains specific
transactional information,
necessary for scheduling an
interchange transaction.
Issued for Stakeholder Consultation: 2013-04-30
This defined term is used in the
following reliability standards: COM001-AB-1.1; INT-001-AB-3; INT003-AB-2; INT-006-AB-2; IRO-001AB-1.1 and IRO-006-WECC-AB-1.
Page 7 of 40
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
firm load
“firm load” means the load that
the ISO and system members will
use reasonable best efforts to
supply without interruption.
This defined term is used in the
following reliability standards: COM002-AB-2a; EOP-001-AB-2b; EOP002-AB-2; and EOP-004-AB1-1.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
“forced outage”
“forced outage” means the
unavailability of a facility which is
not anticipated as part of a legal
owner’s regular maintenance
and occurs as a result of an
automatic or accidental action.
Issued for Stakeholder Consultation: 2013-04-30
This defined term is used in
reliability standard FAC-003-AB1-1.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
EDTI recommends that the
definition of forced outage be
modified to: “means the
unavailability of a facility which is
not anticipated and occurs as a
result of an automatic or
accidental action.”
In this recommendation EDTI has
removed the reference to the
legal owner because the owner
Page 8 of 40
of the facility is generally not the
party that forces an outage to a
facility.
EDTI also recommends the
removal of “regular maintenance”
from the definition due to the fact
that other types of work would
require planned outages to
facilities other than regular
maintenance, such as testing,
construction, or commissioning
activities.
Governor or governor system
Hour ending (HE)
“governor” means automatic
control equipment with speed
droop characteristics to control
generating unit speed and/or
electricity output.
This defined term is used in
reliability standard BAL-002-AB-1
and BAL-003-AB-0a.
“hour ending or HE” means the
sixty (60) minute period ending
that hour. For example, HE 24
includes the time between 23:00
and 24:00. For pool price and
dispatch purposes, the hour
starts at hh:00:00 and ends
hh:59:59 for hh+1.
This defined term is used in
reliability standard BAL-001-AB-0a.
Issued for Stakeholder Consultation: 2013-04-30
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
Page 9 of 40
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
inadvertent interchange
interchange schedule
“inadvertent interchange”
means the difference between
the net actual interchange of
the balancing authority and the
net interchange schedule of the
balancing authority.
This defined term is used in the
following reliability standards: BAL
004-WECC-AB-1; BAL-006-AB-1;
and INT-001-AB-3.
“interchange schedule” means,
for a given settlement interval,
the planned interchange of
energy between the ISO and an
adjacent balancing authority
which results from the validation
and scheduling of interchange
transactions.
This defined term is used in the
following reliability standards: BAL002-AB-1; BAL-004-WECC-AB-1;
EOP-002-AB-2; INT-003-AB-2; INT006-AB-2; INT-009-AB-1; INT-010AB-1; MOD-010&012-AB-0; TOP005-AB1-1; and TOP-007-WECCAB-1.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
Issued for Stakeholder Consultation: 2013-04-30
Page 10 of 40
for use in the reliability standards.
interchange transaction
“interchange transaction”
means an energy or ancillary
services transaction that crosses
one or more balancing authority
area boundaries.
This defined term is used in the
following reliability standards: BALSTD-002-AB-0; INT-001-AB-3; and
TOP-005-AB1-1.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
intertie
ISO rules
“intertie” as defined in the
Transmission Regulation means
a transmission facility,
including its associated
components, that links one or
more electric systems outside
Alberta to one or more points on
the interconnected electric
system.
This defined term is used in the
following reliability standards: BAL001-AB-0a; BAL-003-AB-0a; BAL004-WECC-AB-1; BAL-006-AB-1;
INT-003-AB-2; and INT-009-AB-1.
“ISO rules” as defined in the Act
means the rules made by the
Independent System Operator
This defined term is used in the
following reliability standards: EOP002-AB-2; EOP-003-AB1-1; EOP-
Issued for Stakeholder Consultation: 2013-04-30
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Page 11 of 40
under section 19 and 20 of the
Act.
004-AB1-1; PRC-021-AB1-1; PRC022-AB-1; TOP-005-AB1-1; TPL001-AB-0; TPL-002-AB-0; TPL-003AB-0; TPL-004-AB-0; VAR-001-AB1a; and VAR-002-AB-1.1b.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
ISO tariff
“ISO tariff” as defined in the Act
means the tariff prepared by the
ISO under section 30 of the Act
that has been approved by the
Commission.
This defined term is used in the
following reliability standards: EOP003-AB1-1; EOP-004-AB1-1; FAC010-AB-2.1; and PRC-021-AB1-1.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
meter
“meter” means the apparatus
which measures active energy,
reactive power or both, including
any internal recorder, or clock,
which is normally tested as part
Issued for Stakeholder Consultation: 2013-04-30
This defined term is used in the
following reliability standards: BAL001-AB-0a; BAL-004-WECC-AB-1;
BAL-006-AB-1 and FAC-003-AB1-1.
Page 12 of 40
month
of the apparatus.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
“month” means a calendar
month.
This defined term is used in the
following reliability standards: BAL001-AB-0a; BAL-004-WECC-AB-1;
BAL-006-AB-1; CIP-001-AB1-1;
FAC-001-AB-0; PRC-021-AB1-1;
VAR-002-WECC-AB-1; and VAR501-WECC-AB-1.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
NERC
“NERC” means the North
American Electric Reliability
Corporation.
This defined term is used in the
following reliability standards: BAL001-AB-0a; BAL-002-AB-1; BAL003-AB-0a; EOP-001-AB-2b; and
EOP-004-AB1-1.
Because the AESO is proposing to
eventually delete the language in
Issued for Stakeholder Consultation: 2013-04-30
Page 13 of 40
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
needs identification document
“needs identification
document” means the document
referred to in section (34)(1) of
the Act.
This defined term is used in the
following reliability standards: TPL001-AB-0; TPL-002-AB-0; TPL-003AB-0; and TPL-004-AB-0.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
off peak
“off peak” means those periods
of time which are not on peak.
This defined term is used in
reliability standard BAL-004-WECCAB-1 and BAL-006-AB-1.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Issued for Stakeholder Consultation: 2013-04-30
Page 14 of 40
offer
on peak
operating reserves
“offer” means, in respect of a
pool asset in a settlement
interval, a pool participant
submission to sell:
(i) electric energy or dispatch
down service and includes
all of the operating blocks
the pool participant uses
for that submission; or
(ii) operating reserves to
applicable Alberta markets.
This defined term is used in TOP005-AB1-1.
“on peak” means the time:
(i) from 07:00 to 23:00
inclusive, Mountain Time in
Alberta; or
(ii) when dealing with
inadvertent interchange,
that NERC defines with
Saskatchewan being
treated the same as the
western interconnection.
This defined term is used in
reliability standard BAL-004-WECCAB-1 and BAL-006-AB-1.
“operating reserves” means the
capability above system demand
required to provide for
regulation, load forecasting
errors, equipment forced
outages and scheduled outages
and local area protection. It
consists of spinning reserve
and non-spinning reserve.
This defined term is used in the
following reliability standards: EOP002-AB-2; and TOP-005-AB1-1.
Issued for Stakeholder Consultation: 2013-04-30
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
Page 15 of 40
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
person
“planned outage”
point of connection
“person” as defined in the Act
includes an individual,
unincorporated entity,
partnership, association,
corporation, trustee, executor,
administrator or legal
representative.
This defined term is used in
reliability standard EOP-002-AB-2;
EOP-004-AB1-1; FAC-001-AB-0;
and IRO-001-AB-1.1.
“planned outage” means the
unavailability of a facility which is
anticipated as part of a legal
owner`s regular maintenance
and occurs as a result of a
deliberate, manual action.
This defined term is used in TPL002-AB-0; TPL-003-AB-0; TPL-004AB-0; VAR-002-WEEC-AB-1; and
VAR-501-WECC-AB-1.
“point of connection” means a
point at which electric energy is
Issued for Stakeholder Consultation: 2013-04-30
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
EDTI notes that not all planned
outages are required for
maintenance purposes, and
recommends that this definition
include outages required for
construction, testing, and
commissioning activities as well.
EDTI also recommends that the
reference to a “legal owner” be
either removed or modified to
“legal operator”. The operator is
the party that would plan and
conduct the outage.
This defined term is used in
reliability standard FAC-001-AB-0
Page 16 of 40
point of interconnection
pool participant
transferred between a
transmission facility that is not
an industrial system, and:
(i) the high voltage side of any
aggregated generating
facilities or generating
unit;
(ii) an electric distribution
system;
(iii) an industrial system that has
been designated as such by
the Commission; or
(iv) a load facility with system
access service under
subsection 101(2) of the
Act.
and VAR-001-AB-1a.
“point of interconnection”
means the point at which
electricity is transferred between
the interconnected electric
system and a neighbouring
jurisdiction and where the
electricity so transferred is
measured.
This defined term is used in BAL006-AB-1.
“pool participant” means a
market participant who is
registered to transact, listed in
the pool participant list.
This defined term is used in the
following reliability standards: INT001-AB-3; and TOP-005-AB1-1.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Because the AESO is proposing to
Issued for Stakeholder Consultation: 2013-04-30
Page 17 of 40
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
ramping
reliability
“ramping” means the state of
operation for a pool asset that
begins at the specified effective
time indicated on the most
current energy market dispatch
and continues until the point in
time the pool asset has reached
the quantity, in MW, specified in
the energy market dispatch,
plus or minus the allowable
dispatch variance for that pool
asset.
This defined term is used in
reliability standard INT-006-AB-2.
“reliability” means the
combination of adequacy and
system security.
This defined term is used in the
following reliability standards: BAL003-AB-0a; BAL-004-AB-1; BAL004-WECC-AB-1; BAL-006-AB-1;
COM-001-AB-1.1; EOP-002-AB-2;
FAC-002-AB-0; FAC-003-AB1-1;
FAC-010-AB-2.1; FAC-014-AB-2;
INT-006-AB-2; INT-010-AB-1; MOD016-AB-1.1; MOD-017-AB-0.1;
MOD-018-AB-0; MOD-019-AB-0;
PRC-001-AB1-1; PRC-004-AB1-1;
PRC-004-WECC-AB1-1; TOP-005AB1-1; TPL-001-AB-0; TPL-002-AB-
Issued for Stakeholder Consultation: 2013-04-30
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
EDTI notes that this definition of
reliability is not sufficiently
complete for all standards that
contain the term. For example,
PRC-001 refers to a reduction of
transmission system reliability. It
is unclear to EDTI what this
means in the context of the
proposed definition.
In the context of PRC-001, EDTI
believes that reliability refers to
the “coordination of protective
Page 18 of 40
0; TPL-003-AB-0; TPL-004-AB-0;
and VAR-501-WECC-AB-1.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
reliability standard
remedial action scheme (RAS)
“reliability standards” as
defined in the Transmission
Regulation means the reliability
standards under section 19.
This defined term is used in every
reliability standard.
“remedial action scheme”
means protection schemes
designed to perform pre-planned
corrective measures following a
disturbance to provide for
acceptable interconnected
electric system performance or
equipment protection.
This defined term is used in the
following reliability standards: EOP004-AB1-1; FAC-010-AB-2.1; PRC001-AB1-1; PRC-004-WECC-AB1-1;
PRC-021-AB1-1; TOP-005-AB1-1;
TPL-001-AB-0; TPL-002-AB-0; TPL003-AB-0; and TPL-004-AB-0.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Because the AESO is proposing to
eventually delete the language in
Issued for Stakeholder Consultation: 2013-04-30
devices”. EDTI suggests that this
definition of reliability also be
included in the Consolidated
Authoritative Document Glossary
pertaining to standard PRC-001,
or that a new version of PRC-001
is drafted to replace the word
reliability with “the coordination of
protective devices”.
EDTI recommends that the
definition of RAS be modified to
exclude underfrequency and
undervoltage load shedding.
This would better align the
definition used in Alberta
Reliability Standards with those
used in North American Electric
Reliability Corporation (NERC)
Reliability Standards.
Page 19 of 40
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
spinning reserve
total transfer capability (TTC)
“spinning reserve” means the
amount of unloaded generation
that is synchronized to the
interconnected electric system
and ready to serve additional
demand.
This defined term is used in BALSTD-002-AB-0 and EOP-002-AB-2.
“total transfer capability”
means the amount of real power
the ISO determines can be
reliably transferred over the
interconnected transmission
This defined term is used in
reliability standard EOP-002-AB-2.
Issued for Stakeholder Consultation: 2013-04-30
Also, rules and requirements
pertaining to UFLS and UVLS
programs currently exist (OPP
804, EOP-003-AB1-1, PRC-009AB-0, EOP-004-AB1-1, PRC010-AB-0, PRC-021-AB1-1, and
PRC-022-AB-1) that are separate
from Alberta Reliability Standards
that pertain to Remedial Action
Schemes. Including UFLS and
UVLS in the definitions of RAS is
unduly unnecessary and poses
the potential risk of double
jeopardy.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Because the AESO is proposing to
eventually delete the language in
Page 20 of 40
transmission facility
network under specified system
conditions.
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
“transmission facility” as
defined in the Act means an
arrangement of conductors and
transformation equipment that
transmits electricity from the high
voltage terminal of the generation
transformer to the low voltage
terminal of the step down
transformer operating phase to
phase at a nominal high voltage
level of more than 25 000 volts to
a nominal low voltage level of
25000 volts or less, and includes:
(i) transmission lines
energized in excess of
25000 volts,
(ii) insulating and supporting
structures,
(iii) substations, transformers
and switchgear,
(iv) operational,
telecommunication and
control devices,
(v) all property of any kind
used for the purpose of, or
in connection with, the
operation of the
This defined term is used in the
following reliability standards: CIP001-AB1-1; COM-001-AB-1.1;
COM-002-AB-2; EOP-001-AB-2b;
EOP-003-AB1-1; EOP-004-AB1-1;
FAC-001-AB-0; FAC-002-AB-0;
FAC-003-AB1-1; FAC-501-WECCAB1-1; MOD-010&012-AB-0; PRC001-AB1-1; PRC-004-AB1-1; PRC004-WECC-AB1-1; PRC-018-AB-1;
PRC-021-AB1-1; TOP-005-AB1-1;
TPL-001-AB-0; TPL-002-AB-0; TPL003-AB-0; TPL-004-AB-0; VAR-001AB-1a; VAR-002-AB-1.1b; VAR002-WECC-AB-1; .
Issued for Stakeholder Consultation: 2013-04-30
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Page 21 of 40
transmission facility,
including all equipment in a
substation used to transmit
electric energy from (A) the
low voltage terminal, to (B)
electric distribution
system lines that exit the
substation and are
energized at 25 000 volts
or less, and
(vi) connections with electric
systems in jurisdictions
bordering Alberta,
but does not include a
generating unit or an electric
distribution system.
underfrequency load shedding
(UFLS)
under voltage load shed (UVLS)
“underfrequency load
shedding” means the automatic
or manual actions required to
shed system load when the
system frequency falls below the
normal system operating
frequency of sixty (60) Hz in
order to allow for the return to a
secure state.
This defined term is used in the
following reliability standards: EOP003-AB1-1; PRC-009-AB-0 and
PRC-021-AB1-1.
“under voltage load shed”
means a protection scheme that
enables pre-configured devices
This defined term is used in the
following reliability standards: EOP003-AB1-1; EOP-004-AB1-1; PRC-
Issued for Stakeholder Consultation: 2013-04-30
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Page 22 of 40
to automatically shed load to
stabilize voltage when voltage
falls below predetermined limits.
010-AB-0; PRC-021-AB1-1; and
PRC-022-AB-1.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
“unplanned outage”
“unplanned outage” means the
unavailability of a facility which is
not anticipated as part of a legal
owner`s regular maintenance
and occurs as a result of a
deliberate, manual action.
The defined term is used in FAC003-AB1-1.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
EDTI recommends that this
definition is modified to the
following:
“unplanned outage” means the
unavailability of a facility which is
not anticipated and occurs as a
result of a deliberate, manual
action.
In this recommendation EDTI has
removed the reference to the
legal owner because the owner
of the facility is generally not the
party that conducts regular
maintenance and schedules
planned outage to a facility.
EDTI also recommends the
removal of “regular maintenance”
from the definition due to the fact
that other types of work would
require planned outages to
Issued for Stakeholder Consultation: 2013-04-30
Page 23 of 40
facilities other than regular
maintenance, such as testing,
construction, or commissioning
activities.
WECC
“WECC” means the Western
Electricity Coordinating Council.
This defined term is used in the
following reliability standards: BAL001-AB-0a; BAL-004-AB-1; BAL004-WECC-AB-1; BAL-006-AB-1;
COM-001-AB-1.1; COM-002-AB-2a;
EOP-001-AB-2b; EOP-002-AB-2;
EOP-003-AB1-1; EOP-004-AB1-1;
FAC-002-AB-0; FAC-003-AB1-1;
FAC-010-AB-2.1; FAC-014-AB-2;
FAC-501-WECC-AB1-1; IRO-001AB-1.1; IRO-006-WECC-AB-1;
MOD-010&012-AB-0; MOD-017-AB0.1; MOD-018-AB-0; MOD-019-AB0; PRC-001-AB1-1; PRC-004-AB11; PRC-004-WECC-AB1-1; PRC009-AB-0; PRC-010-AB-0; PRC018-AB-1; PRC-021-AB1-1; PRC022-AB-1; TOP-005-AB1-1; TPL001-AB-0; TPL-002-AB-0; TPL-003AB-0; and TPL-004-AB-0.
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Issued for Stakeholder Consultation: 2013-04-30
Page 24 of 40
“western interconnection”
means the area comprised of
those portions of western
Canada, northern Mexico and the
western United States in which
members of the WECC operate
synchronously connected
transmission systems.
This defined term is used in the
following reliability standards:
BAL-STD-002-AB-0; BAL-004-AB-1;
BAL-004-WECC-AB-1.
Definitions – Amended
Existing
Proposed
Rationale
“automatic generation control
(AGC)” means equipment that
adjusts a balancing authority’s
generation in a balancing
authority’s area from a central
location to maintain the balancing
authority’s frequency or
interchange schedule plus or
minus frequency bias. AGC may
also accommodate automatic
inadvertent payback and time
error correction.
“automatic generation control
(AGC)” means equipment that
adjusts a balancing authority’s
generation in a balancing
authority’s area from a central
location to maintain the
balancing authority’s frequency
or interchange schedule plus or
minus frequency bias; and .
AGC may also accommodate
automatic inadvertent payback
and time error correction.
The AESO proposes to update this
definition to match the version in the
ISO rules and to reflect current
AESO drafting principles.
“balancing authority or BA”
means a responsible entity that
integrates resource plans ahead
of time, maintains load-
“balancing authority or BA”
means a responsible entity that
integrates resource plans ahead
of time, maintains load-
The AESO proposes to update this
definition to match the version in the
ISO rules and to reflect current
AESO drafting principles.
western interconnection
Issued for Stakeholder Consultation: 2013-04-30
Because the AESO is proposing to
eventually delete the language in
the current reliability standards
which incorporates ISO rules
definitions into the reliability
standards, the AESO proposes this
definition be specifically approved
for use in the reliability standards.
Stakeholder Comments and/or
Alternate Proposal
AESO Reply
Page 25 of 40
interchange generation balance
within a balancing authority
area.
interchange generation balance
within a balancing authority
area and supports
Interconnection frequency in
real time.
“balancing authority area”
means the collection of
generation, transmission and
loads, within the metered
boundaries of the balancing
authority and for which the
balancing authority maintains
load-resource balance.
“balancing authority area”
means the collection of
generation, transmission and
loads, within the metered
boundaries of the balancing
authority and for which the
balancing authority maintains
load-resource balance.
The AESO proposes to update this
definition to match the version in the
ISO rules and to reflect current
AESO drafting principles.
“bulk electric system or BES”
as defined by the Regional
Reliability Organization, means
the electrical generation
resources, transmission lines,
interconnections, with
neigbouring systems, and
associated equipment, generally
operated at voltages of 100kV or
higher; radial transmission
facilities serving only load with
one transmission source are
generally not included in this
definition.
“bulk electric system or BES”
as defined by the Regional
Reliability Organization, means
the electrical generation
resources, transmission lines,
interconnections, with
neighbouring systems, and
associated equipment, generally
operated at voltages of one
hundred (100) kV or higher;
radial transmission facilities
serving only load with one (1)
transmission source are
generally not included in this
definition.
The AESO proposes to update this
definition to match the version in the
ISO rules and to reflect current
AESO drafting principles.
“cascading” means the
uncontrolled successive loss of
“cascading” means the
uncontrolled successive loss of
The AESO proposes to update this
definition to reflect current AESO
Issued for Stakeholder Consultation: 2013-04-30
Page 26 of 40
system elements triggered by
an incident at any location;
cascading results in widespread
electric services interruption that
cannot be restrained from
sequentially spreading beyond an
area predetermined by studies.
system elements triggered by an
incident at any location, resulting;
cascading results in widespread
electric services interruption that
cannot be restrained from
sequentially spreading beyond an
area predetermined by studies.
drafting principles.
“contingency” means the
unexpected failure or outage of a
system component, such as a
generating unit, transmission
line, circuit breaker, switch or
electrical element.
“contingency” means the
unexpected failure or outage of a
system component, such as a
generating unit, transmission
line, circuit breaker, switch or
electrical element.
The AESO proposes to update this
definition to reflect current AESO
drafting principles.
“control performance standard
or CPS” means the reliability
standard that sets the limits of a
balancing authority’s ACE over
a specified time period.
“control performance standard”
means the reliability standard
that sets the limits of the area
control error of a balancing
authority’s ACE over a specified
time period.
The AESO proposes to update this
definition to reflect current AESO
drafting principles.
“dependability-based
misoperation” means the
absence of a protection system
or RAS operation when intended.
Dependability is a component of
reliability and is the measure of
a device’s certainty to operate
when required.
“dependability-based
The AESO proposes to update this
misoperation” means the
definition to reflect current AESO
absence of a protection system drafting principles.
or RAS remedial action scheme
operation when intended.
Dependability is a component of
reliability and is the measure of
a device’s certainty to operate
when required.
Issued for Stakeholder Consultation: 2013-04-30
Page 27 of 40
“demand” means:
• the rate at which electric energy
is delivered to or by a system or
part of a system, generally
expressed in kilowatts or
megawatts, at a given instant or
averaged over any designated
interval of time; or
• the rate at which electric energy
is being used by the demand
customer.
“demand” means:
(i) • the rate at which electric
energy is delivered to or by
a system or part of a
system, generally expressed
in kilowatts MWmegawatts,
at a given instant or
averaged over any
designated interval of time;
or
(i) •
(ii) the rate at which electric
energy is being used by the
demand customer.
The AESO proposes to update this
definition to reflect current AESO
drafting principles.
“disturbance monitoring
equipment” means devices
capable of monitoring and
recording system data pertaining
to a disturbance, including: (i)
sequence of event recorders
which record equipment
response to the disturbance; (ii)
fault recorders, which record
actual waveform data replicating
the system primary voltages and
currents and which may include
protective relays that provide this
functionality; and (iii) dynamic
disturbance recorders which
record incidents that portray
system behaviour during
disturbances, such as lowfrequency (0.1 Hz - 3 Hz)
“disturbance monitoring
equipment” means devices
capable of monitoring and
recording system data pertaining
to a disturbance, including:
(i) (i) sequence of event
recorders which record
equipment response to the
disturbance;
(ii) (ii) fault recorders, which
record actual waveform
data replicating the system
primary voltages and
currents and which may
include protective relays
that provide this
functionality; and
(i)(iii) (iii) dynamic disturbance
recorders which record
The AESO proposes to update this
definition to reflect current AESO
drafting principles.
Issued for Stakeholder Consultation: 2013-04-30
Page 28 of 40
oscillations, abnormal frequency
or voltage excursions, and which
may include phasor
measurement units.
incidents that portray
system behaviour during
disturbances, such as
low-frequency (0.1 Hz - 3
Hz) oscillations, abnormal
frequency or voltage
excursions, and which may
include phasor
measurement units.
“frequency bias” means a value,
usually expressed in megawatts
per 0.1 Hertz (MW/0.1 Hz),
associated with a balancing
authority area that approximates
the balancing authority area's
response to Interconnection
frequency error.
“frequency bias” means a value,
usually expressed in megawatts
MW per zero point one 0.1 Hertz
Hz (MW/0.1 Hz), associated with
a balancing authority area that
approximates the balancing
authority area's response to the
frequency error of the
Interconnection frequency error.
The AESO proposes to update this
definition to reflect current AESO
drafting principles.
“frequency bias setting” means
a value, usually expressed in
MW/0.1 Hz, set into a balancing
authority ACE algorithm that
allows the balancing authority to
contribute its frequency response
to the Interconnection.
“frequency bias setting” means
a value, usually expressed in MW
per zero point one Hz (MW/0.1
Hz), set into the area control
error algorithm of a balancing
authority ACE algorithm that
allows the balancing authority
to contribute its frequency
response to the
Interconnection.
The AESO proposes to update this
definition to reflect current AESO
drafting principles.
“frequency response” means,
for an equipment, the ability of a
system or elements of the system
“frequency response” means:
(i) , for an equipment, the
ability of a system, or
The AESO proposes to update this
definition to reflect current AESO
drafting principles.
Issued for Stakeholder Consultation: 2013-04-30
Page 29 of 40
to react or respond to a change
in system frequency, or for a
system, the sum of the change in
demand, plus the change in
generation, divided by the
change in frequency, expressed
in megawatts per 0.1 Hertz
(MW/0.1 Hz).
elements of the system, to
react or respond to a
change in system
frequency;, or
(i)(ii) for a system, the sum of
the change in demand,
plus the change in
generation, divided by the
change in frequency,
expressed in megawatts
MW per zero point one
Hz0.1 Hertz (MW/0.1 Hz).
“functionally equivalent
protection system or FEPS”
means a protection system that
provides performance as follows:
• each protection system can
detect the same faults within the
zone of protection and provide
the clearing times and
coordination needed to comply
with all reliability standards.
• each protection system may
have different components and
operating characteristics.
“functionally equivalent
protection system or FEPS”
means a protection system that
provides performance as follows:
(i) • each protection system
can detect the same faults
within the zone of
protection and provide the
clearing times and
coordination needed to
comply with all reliability
standards; and.
(i)
(ii) • each protection system
may have different
components and operating
characteristics.
“functionally equivalent RAS or
FERAS” means a remedial
action schemeRAS that
provides the same performance
“functionally equivalent RAS or
FERAS” means a RAS that
provides the same performance
as follows:
Issued for Stakeholder Consultation: 2013-04-30
The AESO proposes to update this
definition to reflect current AESO
drafting principles.
The AESO proposes to update this
definition to reflect current AESO
drafting principles.
Page 30 of 40
• each RAS can detect the same
conditions and provide mitigation
to comply with all reliability
standards.
• each RAS may have different
components and operating
characteristics.
“interconnection” means the
electrical connection of the AIES
with any electric system in a
jurisdiction bordering Alberta.
When capitalized, it means any
one of the three major electric
system networks in North
America: Eastern, Western, and
ERCOT.
as follows:
(i) • each RAS remedial
action scheme can detect
the same conditions and
provide mitigation to comply
with all reliability
standards; and.
(i) •
(ii) each RAS remedial action
scheme may have different
components and operating
characteristics.
“interconnection” means the
electrical connection of the AIES
interconnected electric system
with any electric system in a
jurisdiction bordering Alberta and
w. When capitalized, it means
any one (1) of the three (3) major
electric system networks in North
America: Eastern, Western, and
ERCOT.
The AESO proposes to update this
definition to reflect current AESO
drafting principles.
“interconnection reliability
operating limits or IROL” means
a system operating limit, that if
violated, could lead to instability,
uncontrolled separation or
cascading outages that
adversely impact the reliability
of the bulk electric system.
“interconnection reliability
operating limits or IROL” means
a system operating limit, that if
violated, could lead to instability,
uncontrolled separation or
cascading outages that
adversely impact the reliability
of the bulk electric system.
The AESO proposes to update this
definition to reflect current AESO
drafting principles.
“interruptible demand” means
“interruptible demand” means
The AESO proposes to update this
Issued for Stakeholder Consultation: 2013-04-30
Page 31 of 40
the demand that the end-use
customer makes available to the
ISO via contract or agreement for
curtailment.
the demand that a loadthe enduse customer market
participant makes available to
the ISO via contract or
agreement for curtailment.
definition to reflect current AESO
drafting principles.
“legal owner” means the person
who owns electric industry
property including any one or
more of: (i) a generating unit; (ii)
any aggregated generating
facility;
iii) a transmission facility; (iv)
an electric distribution system;
(v) an industrial system that has
been designated as such by the
Commission; and (vi) a load
facility with system access
service under subsection 101(2)
of the Act.
“legal owner” means the person
who owns electric industry
property including any one (1) or
more of:
(i)
a generating unit;
(ii) any aggregated
generating facility;
(iii) a transmission facility;
(iv) an electric distribution
system;
(v) an industrial system that
has been designated as
such by the
Commission; and
(vi) a load facility with system
access service under
subsection 101(2) of the
Act.
The AESO proposes to update this
definition to match the version in the
ISO rules and to reflect current
AESO drafting principles.
“net actual interchange” means
the algebraic sum of all metered
interchange over all
interconnections between two
physically adjacent balancing
authority areas.
“net actual interchange” means
the algebraic sum of all metered
interchange over all
interconnections between the
balancing authority areas of
two (2)physically adjacent
balancing authoritiesy areas.
The AESO proposes to update this
definition to reflect current AESO
drafting principles.
“net interchange schedule”
“net interchange schedule”
The AESO proposes to update this
Issued for Stakeholder Consultation: 2013-04-30
Page 32 of 40
means the algebraic sum of all
interchange schedules with each
adjacent balancing authority.
means the algebraic sum of all
interchange schedules with
each adjacent balancing
authority.
definition to reflect current AESO
drafting principles.
“operator” means a person given
expressed authority by a legal
owner to operate on the legal
owner's behalf any one or more
of its electric industry properties,
including: (i) a generating unit;
(ii) any aggregated generating
facilities; (iii) a transmission
facility; (iv) an electric
distribution system; (v) an
industrial system that has been
designated as such by the
Commission; and (vi) a load
facility with system access
service under subsection 101(2)
of the Act; and includes the legal
owner, if no such other person
has been so authorized.
“operator” means a person
given expressed authority by a
legal owner to operate on the
legal owner's behalf any one (1)
or more of its electric industry
properties, including:
(i) a generating unit;
(ii) any aggregated
generating facilityies;
(iii) a transmission facility;
(iv) an electric distribution
system;
(v) an industrial system that
has been designated as
such by the Commission;
and
(vi) a load facility with system
access service under
subsection 101(2) of the
Act;
and includes the legal owner, if
no such other person has been
so authorized.
The AESO proposes to update this
definition to match the version in the
ISO rules and to reflect current
AESO drafting principles.
“protection system” means
protective relays, associated
communication systems, voltage
and current sensing devices,
station batteries and DC control
“protection system” means an
arrangement of equipment
designed to do one or both of
protect equipment and maintain
the reliable operation of the
The AESO proposes to update this
definition to match the version in the
ISO rules and to reflect current
AESO drafting principles.
Issued for Stakeholder Consultation: 2013-04-30
Page 33 of 40
circuitry.
interconnected electric system
including:
(i) protective relays which
respond to electrical
quantities;
(ii) , associated communication
systems necessary for
correct operation of
protective functions;,
(iii) voltage-sensing and
current- sensing devices
providing inputs to
protective relays;
(iv) station direct current supply
associated with protective
functions including , station
batteries, battery chargers
and non-battery-based
direct current supply; and
(i)(v) DC control circuitry
associated with protective
functions through the trip
coils of the circuit breakers
or other interrupting
devices.
“sabotage event” means an
occurrence or resulting
circumstance that a responsible
entity suspects or determines to
have been deliberately caused,
and results in, or could result in,
adverse effects upon the function
or operation of any of the
“sabotage event” means an
occurrence or resulting
circumstance that a responsible
entity suspects or determines to
have been deliberately caused,
and results in, or could result in,
adverse effects upon the function
or operation of any of the
Issued for Stakeholder Consultation: 2013-04-30
The AESO proposes to update this
definition to reflect current AESO
drafting principles.
Page 34 of 40
following:
• one or more generating units;
• one or more transmission
facilities;
• one or more electric
distribution systems;
• the operational,
telecommunication, or control
devices associated with one or
more generating units,
transmission facilities, or
electric distribution systems.
“security-based misoperation”
means a misoperation caused by
the incorrect operation of a
protection system or RAS.
Security is a component of
reliability and is the measure of a
device’s certainty not to operate
falsely.
“system operating limit or SOL”
means the value (MW, MVar,
amperes, frequency or volts) that
satisfies the most limiting of
prescribed operating criteria for a
specified system configuration to
following:
(i) • one (1) or more
generating units;
(i)
(ii) • one (1) or more
transmission facilities;
(ii)
(iii) • one or more electric
distribution systems; or
(iii)
(iv) • the operational,
telecommunication, or
control devices associated
with one (1) or more
generating units,
transmission facilities, or
electric distribution
systems.
“security-based misoperation”
means a misoperation caused
by the incorrect operation of a
protection system or
RASremedial action scheme.
Security is a component of
reliability and is the measure of a
device’s certainty not to operate
falsely.
“system operating limit or SOL”
means the value (MW, MVar,
amperes, frequency or volts) that
satisfies the most limiting of
prescribed operating criteria for a
specified system configuration to
Issued for Stakeholder Consultation: 2013-04-30
The AESO proposes to update this
definition to reflect current AESO
drafting principles.
The AESO proposes to update this
definition to reflect current AESO
drafting principles.
Page 35 of 40
ensure operation within
acceptable reliability criteria;
system operating limits are
based upon certain operating
criteria: • facility ratings
(applicable pre- and postcontingency equipment or
facility ratings); • transient
stability ratings (applicable preand post-contingency stability
limits); • voltage stability
ratings (applicable pre- and
postcontingencyvoltagestability); •
system voltage limits (applicable
pre- and postcontingencyvoltage limits).
ensure operation within
acceptable reliability criteria;
system operating limits are
based upon certain operating
criteria:
(i) • facility ratings (applicable
pre- and post-contingency
equipment or facility
ratings);
(ii) • transient stability ratings
(applicable pre- and postcontingency stability
limits);
(iii) • voltage stability ratings
(applicable pre- and postcontingency voltage
stability); and
(i)(iv) • system voltage limits
(applicable pre- and postcontingency voltage
limits).
Definitions – Deleted
Existing
Proposed
Rationale
“compliance monitor” means
the entity(s) appointed by the
Commission to carry out
compliance monitoring of
reliability standards.
“compliance monitor” means
the entity(s) appointed by the
Commission to carry out
compliance monitoring of
reliability standards.
This term is only used in the
measures in INT-003-AB-2. The
AESO proposes to delete this term
in favour of its plain language
meaning.
“contributing schedule” means
“contributing schedule” means
This term is only used in the
Issued for Stakeholder Consultation: 2013-04-30
Stakeholder Comments and/or
Alternate Proposal
AESO Reply
Page 36 of 40
a schedule between a source
balancing authority and a sink
balancing authority that
contributes unscheduled flow
across a qualified transfer path.
a schedule between a source
balancing authority and a sink
balancing authority that
contributes unscheduled flow
across a qualified transfer path.
Appendix of IRO-006-WECC-AB-1.
The AESO proposes to delete this
term from the glossary and embed
its meaning in the reliability
standard.
“element” means any electrical
device, comprised of one or more
components, with terminals that
may be connected to other
electrical devices such as a
generating unit, transformer,
circuit breaker, bus section, or
transmission line.
“element” means any electrical
device, comprised of one or more
components, with terminals that
may be connected to other
electrical devices such as a
generating unit, transformer,
circuit breaker, bus section, or
transmission line.
The AESO proposes to delete this
term in favour of its plain language
meaning.
“flat frequency” means a mode
of automatic generation control
that calculates area control
error to maintain a constant
interconnected electric system
frequency.
“flat frequency” means a mode
of automatic generation control
that calculates area control
error to maintain a constant
interconnected electric system
frequency.
This term is used once in BAL-004WECC-AB-1. The AESO proposes
to delete this term in favour of its
plain language meaning.
“frequency error” means the
difference between the actual
and scheduled frequency.
“frequency error” means the
difference between the actual
and scheduled frequency.
The AESO proposes to delete this
version of the term as “frequency
error” appears twice in the
Consolidated Authoritative
Document Glossary.
“interconnected transmission
operator” means the entity
outside of Alberta responsible for
the reliability of its “local”
transmission system, and that
operates or directs the operations
“interconnected transmission
operator” means the entity
outside of Alberta responsible for
the reliability of its “local”
transmission system, and that
operates or directs the operations
The AESO proposes to delete this
term and use the defined term
“transmission operator” as they
have the same meaning.
Issued for Stakeholder Consultation: 2013-04-30
Page 37 of 40
of the transmission facilities.
of the transmission facilities.
“peak demand” means:
• the highest hourly integrated
net energy for load within a
balancing authority area
occurring within a given period.
• the highest instantaneous
demand within the balancing
authority area.
“peak demand” means:
• the highest hourly integrated
net energy for load within a
balancing authority area
occurring within a given period.
• the highest instantaneous
demand within the balancing
authority area.
The AESO proposes to delete this
term in favour of its plain language
meaning.
“qualified controllable device”
means a controllable device
approved by the WECC
Operating Committee for
controlling the unscheduled flow
on the qualified transfer paths
and installed in the
Interconnection for controlling
energy flow.
“qualified controllable device”
means a controllable device
approved by the WECC
Operating Committee for
controlling the unscheduled flow
on the qualified transfer paths
and installed in the
Interconnection for controlling
energy flow.
This term is only used in the
Appendix of IRO-006-WECC-AB-1.
The AESO proposes to delete this
term from the glossary and embed
its meaning in the reliability
standard.
“qualified transfer path” means
a transfer path designated by the
WECC Operating Committee as
being qualified for WECC
unscheduled flow mitigation.
“qualified transfer path” means
a transfer path designated by the
WECC Operating Committee as
being qualified for WECC
unscheduled flow mitigation.
This term is only used in the
Appendix of IRO-006-WECC-AB-1.
The AESO proposes to delete this
term from the glossary and embed
its meaning in the reliability
standard.
“Quarter” means each
consecutive three months of a
calendar year commencing
January 1.
“Quarter” means each
consecutive three months of a
calendar year commencing
January 1.
The AESO proposes to delete this
term in favour of its plain language
meaning.
Issued for Stakeholder Consultation: 2013-04-30
Page 38 of 40
“receiving balancing authority”
means the balancing authority
importing the interchange.
“receiving balancing authority”
means the balancing authority
importing the interchange.
This term is used twice in INT-003AB-2. The AESO proposes to
delete this term in favour of the plain
language meaning of “receiving
balancing authority”.
“relief requirement” means the
unscheduled flow reduction on a
qualified transfer path that
would result by curtailing each
sink balancing authority’s
contributing schedules by the
percentages listed in the columns
of WECC Unscheduled Flow
Mitigation Summary of Actions
Table in Attachment 1 WECC
IRO-006-WECC-AB-1.
“relief requirement” means the
unscheduled flow reduction on a
qualified transfer path that
would result by curtailing each
sink balancing authority’s
contributing schedules by the
percentages listed in the columns
of WECC Unscheduled Flow
Mitigation Summary of Actions
Table in Attachment 1 WECC
IRO-006-WECC-AB-1.
This term is only used in IRO-006WECC-AB-1. The AESO proposes
to delete this term from the glossary
and embed its meaning in the
reliability standard.
“sending balancing authority
area” means the balancing
authority area exporting the
interchange schedule.
“sending balancing authority
area” means the balancing
authority area exporting the
interchange schedule.
This term is used twice in INT-003AB-2. The AESO proposes to
delete this term in favour of the plain
language meaning of “sending
balancing authority”.
“transfer distribution factor”
means the percentage of
unscheduled flow across a
qualified transfer path when a
contributing schedule is
implemented.
“transfer distribution factor”
means the percentage of
unscheduled flow across a
qualified transfer path when a
contributing schedule is
implemented.
This term is only used in the
Appendix of IRO-006-WECC-AB-1.
The AESO proposes to delete this
term from the glossary and embed
its meaning in the reliability
standard.
“transmission connected enduse customer” means an entity
“transmission connected enduse customer” means an entity
This term is only used in FAC-001AB-1. The AESO proposes to
Issued for Stakeholder Consultation: 2013-04-30
Page 39 of 40
purchasing electricity for their
own use that are connected to
the AIES at a high voltage level
above 25 kV.
purchasing electricity for their
own use that are connected to
the AIES at a high voltage level
above 25 kV.
delete this term from the glossary
and embed its meaning in the
reliability standard.
“transmission service provider”
means the entity that administers
the transmission tariff and
provides transmission service to
Transmission Customers under
applicable transmission service
agreements.
“transmission service provider”
means the entity that administers
the transmission tariff and
provides transmission service to
Transmission Customers under
applicable transmission service
agreements.
This term is used once in INT-006AB-2. The AESO proposes to
delete this term from the glossary as
its meaning is clear in the context of
the reliability standard and the
current definition is actually
incorrect.
“VRC” means the Vancouver
Reliability Coordinator.
“VRC” means the Vancouver
Reliability Coordinator.
The AESO proposes to delete this
term and replace it with “the WECC
Reliability Coordinator”.
Issued for Stakeholder Consultation: 2013-04-30
Page 40 of 40