Overview/Glossary Characteristics The WECC Glossary of Terms and Naming Conventions (WECC Glossary) consists of terms that were developed using the WECC Reliability Standards Development Procedures (Procedures), or its successor. This glossary shall be used as the single-source repository for all defined terms developed using the Procedures. The WECC Glossary shall not duplicate a defined term maintained by either the North American Electric Reliability Corporation (NERC) or the North American Energy Standards Board (NAESB). Purpose Per the WECC Standards Committee (WSC) Charter, the WSC is responsible for performing an annual review of the WECC Glossary to ensure the document remains current. The following steps describe the process for adding, modifying, deleting, and administering the defined terms located in the WECC Glossary. Adding Terms The process for adding terms to the WECC Glossary is described in the Procedures. Modifying Terms The process for modifying an existing WECC Glossary term shall be initiated by filing a WECC Standards Authorization Request (SAR) and developed using the steps established in the Procedures. Upon final disposition, the WSC shall ensure the final term is included in the WECC Glossary. Deleting Terms When there is no longer a document (developed under the Procedures) with an active Effective Date in which a specific defined term is used, that term shall be deleted from the WECC Glossary. Administration During development, modification, or consideration for deletion of a defined term, the term shall be retained in the document under development. Upon final disposition, the WSC shall ensure the final term is removed from the body of the document under development and moved into the WECC Glossary. The updated WECC Glossary shall be posted as soon after final disposition as is practical. The previous version of the WECC Glossary shall be archived. Defined terms developed for WECC Regional Reliability Standards will be handled in accordance with NERC’s instructions.
Terms Developed Using the WECC Reliability Standards Development Procedures Term WECC Board Approval Approved Definition Term Origin Capacity Associated with Energy Recallable for Reserves December 6, 2007 C-RE: Capacity Associated with Energy Recallable for Reserves. This product is energy which is recallable within ten minutes of activation of reserves and has been included in the Source Balancing Authority’s reserve resources. INT-018-WECC-CRT-1.2 Capacity for Non Spinning Reserve December 6, 2007 C-NS: Capacity for Non-Spinning Reserve. On-Demand Non-Spinning Reserve obligation/resource is a Non-Spinning Reserve product that can be activated through the adjustment of a capacity INT-018-WECC-CRT-1.2 Capacity for Spinning Reserve December 6, 2007 C-SP: Capacity for Spinning Reserve. On-Demand Spinning Reserve obligation/resource is a Spinning Reserve product that can be activated through the adjustment of a capacity e-Tag. INT-018-WECC-CRT-1.2 Exchange of Firm Energy December 6, 2007 G-EX: Exchange of Firm Energy. An exchange of firm energy where by one entity delivers energy to another entity at one point on the grid and receives an agreed upon amount of energy from that entity at another point on the grid. INT-018-WECC-CRT-1.2 Firm Contingent December 6, 2007 G-FC: Firm Contingent. The energy is from a designated generating unit or source. This product may be interrupted only to the extent the output capability of the designated unit or source has been reduced due to a deration or outage of the designated unit or source. A G-FC product cannot be interrupted for economic reasons. INT-018-WECC-CRT-1.2
Local Area Protection Scheme (LAPS) June 22, 2011 A Remedial Action Scheme (RAS) whose failure to operate would not result in any of the following: Violations of TPL-(001 thru 004)- System Performance Criteria, Maximum load loss ≥ 300 MW, Maximum generation loss ≥ 1000 MW. PRC-(012 through 014)- CRT-2.1 Non-Firm Energy December 6, 2007 G-NF: Non-firm Energy. This product may be interrupted for any reason or no reason, without liability on the part of either the buyer or seller. INT-018-WECC-CRT-1.2 Primary Reference Source (PRS) June 22, 2011 Primary Reference Source equipment provides a timing signal whose long-term accuracy is maintained at 1x10 -11 or better with verification to universal time coordinated (UTC). A PRS signal is used as the basis of reference for control of other clocks within a telecommunications network. COM-001-WECC-CRT-1 Safety Net June 22, 2011 A type of Remedial Action Scheme designed to remediate TPL-004-0 (System Performance Following Extreme Events Resulting in the Loss of Two or More Bulk Electric System Elements (Category D)), or other extreme events. PRC-012 through 014- WECC-CRT-2.1 WECC Underfrequency Load Shedding Review Group (Review Group) December 6, 2012 A joint regional group comprised of WECC Balancing Authorities, Planning Coordinators, Transmission Operators, and Transmission Planners created by the WECC Joint Guidance Committee to review and maintain an accurate underfrequency load shedding database and simulation models reflecting the WECC Off-Nominal Frequency Load Shedding Plan. The Review Group shall also be responsible for conducting simulations of the Coordinated Plan to ensure the Coordinated Plan meets all the requirements of NERC Reliability Standard PRC-006-1. PRC-006-WECC-CRT-1.1 CRT
WECC Remedial Action Scheme Database: November 30, 2011 That database of information collected from the WECC Remedial Action Scheme Information required under PRC-012-(012 through 014)-WECC-CRT-2.1, WECC Remedial Action Scheme Information Sheet (Attachment A). PRC-(012 through Western Electricity Coordinating Council Off- Nominal Frequency Load Shedding Plan (Coordinated Plan) December 6, 2012 The Coordinated Plan presented as Attachment A to PRC-006-WECC-CRT-1, or its successor, as required by NERC Reliability Standard PRC-006-1 and adopted by all Planning Coordinators within WECC. PRC-006-WECC-CRT-1.1 Wide Area Protection Scheme (WAPS) November 30, 2011 A Remedial Action Scheme (RAS) whose failure to operate would result in any of the following: Violations of TPL-(001 thru 004)- System Performance Criteria, Maximum load loss ≥ 300 MW, Maximum generation loss ≥ 1000 PRC-(012 through Attachment A