NPRR #868 · Revision Request

NPRR868 As-Built Hub and Load Zone Calculation

Approved Urgent sponsor ERCOT posted 2018-03-01 ercot.com

ReasonAddresses current operational issues

Created2018-03-08

Approved2018-04-10

Sections Affected

2.13.43.5.2.13.5.2.23.5.2.33.5.2.43.5.2.64.5.14.6.1.2and 7.5.1

Summary

This NPRR modifies the Hub Bus and Load Zone definitions and price calculations to account for the current usage of power flow buses as opposed to Electrical Buses in the DAM and CRR Auction systems. In some cases there can be differences between power flow buses and Electrical Buses, and it is more suitable for power flow buses to be used. Real-Time currently uses Electrical Buses for the Hub and Load Zone calculations. Further, the rewritten formulas provide clarification for the scenario when buses are de-energized in contingency analysis.

Timeline

Mar 1 '18
PRSFiled by ERCOT
- 868NPRR-01 As Built Hub and Load Zone Calculation 030118 Mar 1 '18 · Revision Request
- 868NPRR-02 Impact Analysis 030118 Mar 1 '18 · Staff Report
Mar 8 '18
PRS PRS Meeting
PRSRecommended for Approval Urgent status Recommended for approval Forwarded → TAC
“To grant NPRR868 Urgent status; to recommend approval of NPRR868 as submitted and to forward NPRR868 and the Impact Analysis to TAC.” — Passed

→ Revision Request Consideration
Mar 22 '18
TAC TAC Meeting
TACRecommended for Approval Recommended for approval
“To recommend approval of NPRR868 as recommended by PRS in the 3/8/18 PRS Report with a proposed effective date of upon Board approval.” — Passed

→ Revision Request Consideration
- 868NPRR-03 PRS Report 030818 Mar 9 '18 · Committee Report
- 868NPRR-04 TAC Report 032218 Mar 22 '18 · Committee Report
Apr 10 '18
BOARD Board of Directors Meeting
BOARDApproved Approved
“To approve NPRR868 as recommended by TAC in the 3/22/18 TAC Report.” — Passed
- 868NPRR-05 Board Report 041018 Apr 10 '18 · Committee Report