Skip to main content
Skip Navigation LinksHomeStakeholder OutreachLessons Learned

Lessons Learned

As part of its facilitation of a learning environment, Texas Reliability Entity, Inc. (Texas RE) develops and disseminates lessons learned from events, compliance processes, dismissals and trends to the industry within the ERCOT Region. Lessons learned and event observations are posted below.

If stakeholders have lessons learned they would like to share with the industry, please send them to information@texasre.org External Link.

Disclaimer: The sole purpose of the lessons learned and observations is to convey guidance through illustrative examples from Texas RE’s various activities. It is not intended to nor does it create, modify, or in any way alter any NERC Reliability Standard or any obligation of a registered entity or Texas RE. Texas RE will continue to assess compliance based on the facts and circumstances of a given situation as applied to the relevant NERC Reliability Standard. The lessons learned and observations are not intended to define the exclusive method by which an entity may comply with a particular standard or requirement, or foreclose a Registered Entity's demonstration of compliance by alternative means.  Implementation of any suggestions or recommendations in this document does not, in and of itself, guarantee compliance with any NERC Reliability Standard.  Rather, each Registered Entity is responsible for assessing and taking all necessary actions to establish compliance with all of the requirements of all applicable NERC Reliability Standards.

DOCUMENTS
2011 1st Quarter - Possible Violations Received by Standard
Graph of all possible violations received in the first quarter of 2011 by standard.
(Jul 22, 2011 , .pdf, 87 KB)

2011 2nd Quarter - Possible Violations Received by Standard
Graph of all possible violations received in the second quarter of 2011 by standard.
(Jul 22, 2011 , .pdf, 82 KB)

Lessons Learned from Enforcement Dismissals
Lessons learned from Enforcement dismissals from January - June 2011. Standards addressed include CIP-001-1, CIP-002-1, CIP-003-1, CIP-004-2, CIP-005-2, CIP-007-1, FAC-001-0, PRC-008-0 and PRC-011-0.
(Jul 01, 2011 , .pdf, 260 KB)

Event Observation - Combined Cycle Trips Due to Lean Combustion
Multiple issues have been reported with combined cycle unit trips while operating at or near minimum load when a frequency disturbance occurs.
(Jul 01, 2011 , .pdf, 269 KB)

Event Observation - EEA Load Shed
Registered Entities implemented rolling blackouts in response to directives issued by the Reliability Coordinator (RC) during an Energy Emergency Alert (EEA) event.
(Jul 13, 2011 , .pdf, 255 KB)

Event Observations - February 2, 2011 Winter Weather Event
Observations from the February 2, 2011 winter weather event
(Jul 01, 2011 , .pdf, 319 KB)

Event Observation - Generator Step-Up High Side Switch Failure
The failure of a generator step-up transformer high-side disconnect phase connection caused the generator to be taken off line.
(Jul 01, 2011 , .pdf, 375 KB)

Event Observation - Generator Step-Up High Side Switch Moisture Ingress
The failure of a generator step-up transformer high-side disconnect phase connection caused the generator to be taken off line.
(Jul 01, 2011 , .pdf, 339 KB)

Event Observation - Generator Trip Due to Low Auxiliary Bus Voltage
A close-in line fault caused a generating station to run back and trip due to low voltage on the station auxiliary bus.
(Jul 01, 2011 , .pdf, 258 KB)

Event Observation - WGR Trip Due to Firmware Upgrade
On several occasions, a Wind-Generation Resource (WGR) experienced issues with drivetrain oscillations in the ERCOT region.
(Jul 01, 2011 , .pdf, 266 KB)
© 2012 Texas Reliability Entity. All rights reserved.