Download Stakeholder Comment and AESO Replies Matrix

Stakeholder Comment and AESO Replies Matrix
Proposed New ISO Rule Definitions Related to Proposed New ISO Rules Section 304.5, Provision for Operation of a Transmission Facility within Ratings
(“New Section 304.5 Definitions”)
Date of Request for Comment:
Period of Comment:
September 24, 2015
September 24, 2015
through
October 13, 2015
Definitions – New
Existing
Original Proposed Definition
Stakeholder Comments and/or Alternate
Proposal
No definition currently exists for the
ISO Rules
“emergency rating” means the rating as
defined by the equipment owner that specifies
the level of electrical loading or output, usually
expressed in megawatts (MW) or Mvar or other
appropriate units, that a system, facility, or
element can support, produce, or withstand for a
finite period. The rating assumes acceptable
loss of equipment life or other physical or safety
limitations for the equipment involved.
AltaLink Management Ltd. (“AltaLink”)
1. Suggest that voltage limits, in kV, be included as
it’s an attribute of the equipment rating.
Suggest the last sentence be modified to reflect
the determinations are the sole rsponsibliity of
the equipment owner.
“The rating assumes acceptable loss of
equipment life or other physical or safety
limitations for the equipment involved, as
determined by the equipment owner.”
AESO Reply
1. The AESO agrees with AltaLink’s suggestion
to include voltage as an attribute of the
equipment rating. Accordingly, the proposed
definition has been re-worded to incorporate
the definition for “equipment rating”, which
includes voltage as an attribute of the
equipment rating.
The AESO also agrees with AltaLink’s
suggestion to modify the last sentence of the
proposed definition to reflect that the
acceptable loss of equipment or facility life
and the physical or safety limits of the
equipment or facility during the period are
determined by the legal owner of the
equipment or facility. Accordingly, the
proposed definition has been modified to
reflect this change.
The AESO has also made further changes to
the proposed definition, including
incorporating the definition for “facility rating”.
AESO Replies to Stakeholder Comments: March 3, 2016
Page 1 of 2
Therefore, the AESO will be issuing a second
Letter of Notice regarding the proposed
revisions to the definition of “emergency
rating” and the new definitions of “equipment
rating” and “facility rating”. A blackline of all of
the changes to the proposed definition will be
included in the Stakeholder Comment Matrix
attached to the second Letter of Notice.
“normal rating” means the rating as defined by
the equipment owner that specifies the level of
electrical loading, usually expressed in
megawatts (MW) or other appropriate units that
a system, facility, or element can support or
withstand through the daily demand cycles
without loss of equipment life.
AltaLink Management Ltd. (“AltaLink”)
2. Suggest the inclusion of Mvar in the definition,
similar to how Mvar is included in the “emergency
rating” definition.
As commeted above, suggest that voltage limits,
in kV, be included as it’s an attribute of the
equipment rating.
2. The AESO agrees with AltaLink’s suggestion
to include reactive power in the proposed
definition.
As described in the AESO reply to comment 1
above, the AESO also agrees with AltaLink’s
suggestion to include voltage as an attribute
of the equipment rating.
Accordingly, the proposed definition has been
re-worded to incorporate the definition for
“equipment rating”, which includes both
reactive power and voltage as an attribute of
the equipment rating.
The AESO has also made further changes to
the proposed definition, including
incorporating the definition for “facility rating”
into the proposed definition.
Therefore, the AESO will be issuing a second
Letter of Notice regarding the proposed
revisions to the definition of “normal rating”
and the new definitions of “equipment rating”
and “facility rating”. A blackline of all of the
changes to the proposed definition will be
included in the Stakeholder Comment Matrix
attached to the second Letter of Notice.
AESO Replies to Stakeholder Comments: March 3, 2016
Page 2 of 2