NOGRR #62 · Revision Request

NOGRR062 Require Voltage Ride-Through Capability for IRRs

Approved Urgent sponsor ERCOT posted 2011-03-03 ercot.com

ReasonThis 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.

Created2011-03-10

Sections Affected

2.9.1

Summary

This Nodal Operating Guide Revision Request (NOGRR) proposes a requirement for Voltage Ride-Through (VRT) capability for new IRRs

Action Log 2 milestones

Mar 10
ROSRecommended for Approval
Apr 7
TACApproved

Documents 5

Name	Type	Posted	Classification
062NOGRR-01 Require Voltage Ride-Through Capability for IRRs 030	doc	Mar 3 '11	Revision Request
062NOGRR-02 Impact Analysis 030311	doc	Mar 3 '11	Committee Report
062NOGRR-03 Urgency Vote 030811	xls	Mar 8 '11	Revision Request Ballot
062NOGRR-04 ROS Report 031011	doc	Mar 11 '11	Committee Report
062NOGRR-05 TAC Report 040711	doc	Apr 12 '11	Committee Report

Name

Type

Posted

Classification

062NOGRR-01 Require Voltage Ride-Through Capability for IRRs 030

doc

Mar 3 '11

Revision Request

062NOGRR-02 Impact Analysis 030311

doc

Mar 3 '11

Committee Report