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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