Overview
As of June 18, 2007, the U.S. electricity industry will operate under mandatory, enforceable reliability standards for the first time. Utilities and other bulk power industry participants that violate any of 83 standards will face enforcement actions including possible fines of up to $1 million a day.
The North American Electric Reliability Corporation (NERC) is responsible for developing and enforcing these standards as one means of improving the reliability of North America’s bulk power system.
Applicability (of reference listed below)
The requirements set forth in this procedure are applicable to transmission protective relaying systems that are applied to protect transmission elements rated 100 kV or above, and generation protection equipment providing protection to the generator, the generator step up transformer, and all associated buswork.
For clarification the intent is to include all protection that disconnects the generator from the transmission system. This procedure is not intended to cover the protective relaying providing protection to generator auxiliary equipment. Further this procedure only applies to generation protection systems (generator, the generator step up transformer, and all associated buswork) that protect equipment rated 75 MVA and above and which provides a generating capacity of 75 MVA or more to the transmission system, connected to a system voltage of 100 kV or higher. The requirements are also applicable to all SPS, UFLS and UVLS equipment.
Reference
SERC Supplement
Maintenance & Testing – Protection Systems (Transmission, Generation, UFLS, UVLS, & SPS) Revision 1 June 1 2006
NERC Reliability Standards
PRC-005-1, PRC-008, PRC-011, & PRC-017
“Batteries1
The program shall include visual inspection and checking for correct voltage levels.
Test program shall include impedance / loading tests, or equivalent testing to ensure the viability of the battery system.”
The NERC standards require that these maintenance and testing programs be documented along with the basis for the testing intervals. Owners must also be able to demonstrate that maintenance and testing is being performed as scheduled. This procedure describes maintenance and testing practices of the components listed above.
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