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NOGRR132

Summary

Title Automatic Under-Voltage and Under-Frequency Load Shedding Protection Systems --Load Restoration
Next Group
Next Step
Status Approved on 02/26/2015
Effective Dates
03/01/2015

Action

Date Gov Body Action Taken Next Steps
02/26/2015 TAC Approved
02/05/2015 ROS Recommended for Approval Revision Request Consideration
01/26/2015 OWG Recommended for Approval Revision Request Consideration
01/08/2015 ROS Remanded OWG for consideration
10/06/2014 ROS Deferred/Tabled ROS for consideration.
08/19/2014 OWG Recommended for Approval ROS for consideration.
07/22/2014 OWG Recommended for Approval OWG for IA review.
06/25/2014 OWG Deferred/Tabled OWG for consideration.

Voting Record

Date Gov Body Motion Result
02/26/2015 TAC To recommend approval of NOGRR132 as recommended by OWG in the 1/26/15 OWG Report. Passed
02/05/2015 ROS To recommend approval of NOGRR132 as recommended by OWG in the 1/26/15 OWG Report. Passed
01/26/2015 OWG To endorse and forward NOGRR132 as amended by the 1/22/15 CNP comments and revised by OWG and the associated Impact Analysis. Passed
01/08/2015 ROS To remand NOGRR132 to OWG for further review. Passed
10/06/2014 ROS To table NOGRR132. Passed
08/19/2014 OWG To endorse and forward the 7/22/14 OWG Report and Impact Analysis for NOGRR132 to ROS. Passed
07/22/2014 OWG To recommend approval of NOGRR132 as submitted. Passed
06/25/2014 OWG To table NOGRR132. Passed

Background

Status: Approved
Date Posted: May 13, 2014
Sponsor: ERCOT
Urgent: No
Sections: 2.6.1, 6.2.6.3.6
Description: Adds a requirement for Under-Frequency Load Shedding (UFLS) and Under-Voltage Load Shedding (UVLS) systems Load restoration coordination consistent with that of manually shed Load for EEA 3 or a Constraint Management Plan.
Reason: Paragraph (4) of Section 11.4, Mitigation Plan, states, "Restoration of any Load shed by executing the Mitigation Plan shall be coordinated with ERCOT." To improve reliability of the ERCOT System, ERCOT proposes similar language in Section 6.2.6.3.6 to provide a reasonable level of assurance that Load restoration will not exceed capability limits of Generation Resources or Transmission Facilities. Additionally, ERCOT proposes to use similar language in Paragraph (5) of Section 2.6.1 for consistency and clarity that coordination is expected for any of the Load shed restoration with UFLS, UVLS, or Constraint Management Plans with Load shed.

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