Addressing a New Interconnection Reliability Operating Limit

Transcription

1 Addressing a New Interconnection Reliability Operating Limit Phil O Donnell Manager, Operations and Planning Audits

2 What is an Interconnection Reliability Operating Limit (IROL)? 2 NERC definition Development RC methodology definition PC methodology definition Communication

3 3 System Operating Limit (SOL) The value (such as MW, Mvar, amperes, frequency, or volts) that satisfies the most limiting of the prescribed operating criteria for a specified system configuration to ensure operation within acceptable reliability criteria. SOLs are based upon certain operating criteria. These include, but are not limited to: Facility Ratings (applicable pre- and post-contingency equipment ratings or Facility ratings) Transient Stability Ratings (applicable pre- and post-contingency Stability Limits) Voltage Stability Ratings (applicable pre- and post-contingency Voltage Stability) System Voltage Limits (applicable pre- and post-contingency Voltage Limits)

4 4 IROL A SOL that if violated, could lead to instability, uncontrolled separation, or Cascading outage that adversely impact the reliability of the Bulk Electric System (BES). An IROL is a SOL all requirements that apply to SOLs apply to IROLs Plus a few more

5 Development: IROLs in the Planning Horizon 5 FAC System Operating Limits Methodology for the Planning Horizon: R1.3 & R3.6 (PA) FAC Establish and Communicate SOLs Establishing: R3 (PA) and R4 (TP) Communicating: R5, R5.3 (PA) R5.4 (TP)

6 Development: IROLs in the Operating Horizon 6 FAC SOLs Methodology for the Operations Horizon: R1.3 & R3.7 (RC) Peak RC document library: FAC Establish and Communicate SOLs Establishing: R1 (RC) Communicating: R5, R5.1 (RC)

7 7 Implementing IROLs IROLs are SOLs Any Standard which references an SOL also applies to an IROL A few key ones: TOP R10 TOP R2

8 8 Facilities Subject to the Standards for IROLs You must review the operating plans and details of the IROL Generally the facility should be considered applicable to the standards if it is identified as: An element critical to the derivation of an IROL Or A defined Contingency for the IROL Normally a facility that is just used as the description of the interface or boundary of the IROL is not subject to all of the standard requirements for the IROLs

9 9 IROL Requirements for the RC Function IRO R5 IRO R1, R2, R5, R6 IRO R1, R2, R3, R4 PER R2, R4 PRC (not effective until 2022)

10 10 IROL Requirements Balancing Authority PER R4 Transmission Operators PER R4 TOP R12 Generator Owner FAC-003-4* R1 *Technically only Planning Horizon IROLs

11 IROL Requirements for the Transmission Owner FAC R1, R2 PER R4 PRC R6 (Not effective until 2022) 11

12 12 Critical Infrastructure Protection Does the new IROL create or change the impact rating of a BES cyber system? Conduct a review of CIP a Attachment 1, Impact Rating Criteria.

13 What you know per FAC-014 (TOP, TSP, TP, PA) This information is required to be provided by the RC for all IROLs Identification of the associated facility (or group of facilities) that is/are critical to the derivation of the IROL The value of the IROL and its associated Tv The associated contingency/contingencies The type of limitation represented by the IROL (e.g., voltage collapse, angular stability) 13

14 14 The RC typically provides even more The affected/impacted entities List of operating plans and associated procedures Contact information for RC and impacted entities

15 15 Above and Beyond If your system operating personnel have to perform any task associated with mitigating an IROL or specified in an operating plan for an IROL. Consider that task to be a reliability related task per PER Verify performance capability ASAP. Do not wait 6 months. Ensure monitoring, displays, and alarms support the appropriate monitoring of the IROL parameters as applicable to your role in the IROL mitigation. If this is a new line subject to FAC consider it as a line subject to R5. (Do not wait until the next annual work plan)

16 16 Contact Information Phil O Donnell, Manager, Operations and Planning Audits podonnell@wecc.biz