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NOGRR139

Summary

Title Under/Over-Frequency Relaying Requirements
Next Group
Next Step
Status Approved on 03/26/2015
Effective Dates
04/01/2015

Action

Date Gov Body Action Taken Next Steps
03/26/2015 TAC Approved
03/12/2015 ROS Recommended for Approval Revision Request Consideration
02/19/2015 OWG Recommended for Approval Revision Request Consideration
01/26/2015 OWG Recommended for Approval Impact Analysis Consideration
10/22/2014 OWG Deferred/Tabled OWG for consideration.

Voting Record

Date Gov Body Motion Result
03/26/2015 TAC To approve NOGRR139 as recommended by ROS in the 3/12/15 ROS Report. Passed
03/12/2015 ROS To recommend approval of NOGRR139 as recommended by OWG in the 2/19/15 OWG Report. Passed
02/19/2015 OWG To endorse and forward to ROS the 1/26/15 OWG Report and Impact Analysis for NOGRR139. Passed
01/26/2015 OWG To recommend approval of NOGRR139 as amended by the 11/14/14 Austin Energy comments. Passed
10/22/2014 OWG To table NOGRR139. Passed

Background

Status: Approved
Date Posted: Sep 30, 2014
Sponsor: ERCOT
Urgent: No
Sections: 2.6, 2.6.2
Description: Adds over-frequency relaying requirements and clarifies under-frequency and over-frequency relay set-points so that Generation Resources know what is expected. Over-frequency relay set points criteria was approved by NERC in March 2014 under Standard PRC-024, Generator Frequency and Voltage Protective Relay Settings.
Reason: Meets regulatory requirements

Key Documents