Project 2020-02 Modifications to PRC-024 (Generator Ride-through)

​​​​​​Related Files

Status
The formal comment period for the Generator Ride-through Standard (PRC-024-3 Replacement) Standard Authorization Request (SAR) concluded 8 p.m. Eastern, Thursday, July 14, 2022. Once the drafting team is appointed by the SC, they will review all comments received and determine the next steps of the project.

Background
The SAR presented to the Standards Committee May 18, 2022 is meant to retire PRC-024-3 and replace it with a performance-based ride-through standard that ensures generators remain connected to the BPS during system disturbances. Specifically, the SAR focuses on the generator protection and control systems that can result in the reduction or disconnection of generating resources during these events. The SAR also ensures protection or controls that fail to ride through system events are analyzed, addressed with a corrective action plan (if possible), and reported to necessary entities for situational awareness. From a risk-based perspective, the goal of the standard is to mitigate the ongoing and systemic performance issues identified across multiple Interconnections and across many disturbances analyzed by NERC and the Regions. These issues have been identified in inverter-based resources as well as synchronous generators, with many causes of tripping entirely unrelated to voltage and frequency protection settings as dictated by the currently effective version of PRC-024.


Standard(s) Affected
– ​PRC-024

Purpose/Industry Need
The purpose of this SAR is to retire PRC-024-3 and replace it with a performance-based ride-through standard that ensures generators remain connected to the BPS during system disturbances. Specifically, this SAR focuses on the generator protection and control systems that can result in the reduction or disconnection of generating resources during these events. The SAR also ensures protection or controls that fail to ride through system events are analyzed, addressed with a corrective action plan (if possible), and reported to necessary entities for situational awareness. From a risk-based perspective, the goal of the standard is to mitigate the ongoing and systemic performance issues identified across multiple Interconnections and across many disturbances analyzed by NERC and the Regions. These issues have been identified in inverter-based resources as well as synchronous generators, with many causes of tripping entirely unrelated to voltage and frequency protection settings as dictated by the currently effective version of PRC-024.

This project will be addressing two SARs​.

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Draft

Actions

Dates

Results
Consideration of Comments
PRC-024 ​Standard Authorization Request

Supporting Materials

Unofficial Comment Form (Word)

​Comment Period

Info

Submit Comments


05/31/22 - 07/14/22
​​​

Comment​s Received​


Drafting Team Nominations

Unofficial Nomination Form (Word)​
Nomination Period

Info

Submit Nominations​


05/31/22 - 07/14/22

​​​​Standard Authorization Request
Clean | Redline

The Standards Committee accepted the SAR on ​April 20, 2022

Supplemental Drafting Team Nominations

Supporting Materials

Unofficial Nomination Form (Word)​


Nomination Period

Info

Submit Nominations



11/19/21 - 12/20/21​

Supplemental Drafting Team Nominations

Supporting Materials

Unofficial Nomination Form (Word)​


Nomination Period

Info​

Submit Nominations



​04/28/21 - 05/17/21


Standard Authorization Request

Supporting Materials

Unofficial Comment Form (Word) 

Transmission-connected Dynamic Reactive Resources White Paper



Comment Period

Info
(Updated)

Submit Comments




03/30/20 -
05/13/20(Extended)

 

 

Comments Received



​Consideration of Comments​




Drafting Team Nominations

Supporting Materials

Unofficial Nomination Form (Word)


Nomination Period

Info
(Updated)

Submit Nominations



03/30/20 - 05/13/20(Extended)