NOTICE DATE: March 14, 2008
NOTICE TYPE: M-A031408-01 Operations
SHORT DESCRIPTION: Each QSE with resources or Transmission Service
Provider to supply documentation of any protective relay or equipment
failures in accordance with NERC standard PRC-001-0.
INTENDED AUDIENCE: QSEs with resources and Transmission Service
DAY AFFECTED: March 13, 2008
LONG DESCRIPTION: ERCOT ISO requires each QSE with resources or
Transmission Service Provider (Transmission Operator) to supply
documentation, including corrective actions, to ERCOT ISO Operations
Shift Supervisor Desk of any protective relay or equipment failures
which reduce system reliability in accordance with NERC standard
Also, ERCOT requires information on the expected backup relay action
which is expected to protect the involved equipment and the expected
duration of the impaired protective relaying action.
By this Market Notice, ERCOT is requesting that all relay misoperations
per Operating Guide 7.2.3 (2) be reported to ERCOT ISO Operations Shift
This notice is a standing request and is to remain in effect until an
Operating Guide Revision Request (OGRR) to align ERCOT processes with
NERC Standards can be implemented.
ACTION REQUIRED: ERCOT is requesting that all relay misoperations per
Operating Guide 7.2.3 (2) be reported to ERCOT ISO Operations Shift
ADDITIONAL INFORMATION: References:
NERC Standard PRC-001-1 R2.2 states "If a protective relay or equipment
failure reduces system reliability, the Transmission Operator shall
notify its Reliability Coordinator and affected Transmission Operators
and Balancing Authorities. The Transmission Operator shall take
corrective action as soon as possible."
ERCOT Operating Guide 7.2.3 (2) states: "All protective relay system
misoperations in systems 100 kV and above shall be documented, including
corrective actions and the documentation supplied by the affected
Facility Owner to ERCOT or NERC upon their request within five business
days. All protective relay system misoperations shall be documented
using Section 6.1.2, Relay Misoperation Report."
CONTACT: If you have any questions, please contact your ERCOT Account
Manager. You may also call the general ERCOT Client Services phone
number at (512) 248-3900 or contact ERCOT Client Services via e-mail at
[log in to unmask] <mailto:[log in to unmask]> .
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