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NOGRR062

Summary

Title Require Voltage Ride-Through Capability for IRRs
Next Group
Next Step
Status Approved on 04/07/2011
Effective Dates
05/01/2011

Action

Date Gov Body Action Taken Next Steps
04/07/2011 TAC Approved
03/10/2011 ROS Recommended for Approval

Voting Record

Date Gov Body Motion Result
04/07/2011 TAC To approve NOGRR062 as recommended by ROS in the 3/10/11 ROS Report
03/10/2011 ROS To recommend approval of NOGRR062 and to forward NOGRR062 and the Impact Analysis to TAC Passed

Background

Status: Approved
Date Posted: Mar 3, 2011
Sponsor: ERCOT
Urgent: Yes
Sections: 2.9.1
Description: This Nodal Operating Guide Revision Request (NOGRR) proposes a requirement for Voltage Ride-Through (VRT) capability for new IRRs
Reason: This NOGRR is being proposed for the following reasons: Due to the expected IRRs to be placed in service over the next few years, lack of VRT capability could pose ERCOT reliability issues in the event of voltage excursions. Concern of sudden voltage changes causing tripping of units without VRT capability. Additionally, although the VRT study indicated there was no need to retrofit existing Wind-powered Generation Resources to add VRT capability, the concern remains if more units without VRT capability are placed in service, especially in west Texas where many existing WGRs do not have VRT capability.

Key Documents