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A Utility Perspective of Substation Battery
Maintenance and NERC PRC-005
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In the past, utilities have been responsible for ensuring the capability of its battery
systems for performing the design functions of its protective systems for its switchyards and substations. This
included non-valued activities such as specific gravity measurements and periodic discharge testing which were both costly
or degraded the equipment’s performance. However, when NERC standard PRC-005-1 “Generator and Transmission Protection
System Maintenance and Testing” standard went into effect in May 2006, utilities quickly scrambled to develop programs
to ensure compliance. This paper examines various testing equipment to enable compliance and the imminent
changes required by the proposed changes to the standard.
Author: Paul Gogan, BSEE, MBA,
Manager of Electrical
Distribution Reliability and Planning,
WE Energies |
Utility Perspective
A Response
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A Response to “A Utility Perspective of
Substation Battery Maintenance and NERC PRC –5” |
Recently, a paper was published on the Quality
Advisors website titled “A Utility Perspective of Substation Battery Maintenance and NERC PRC-5,” by Paul Grogan.
Mr. Gorgan provides us with an interesting perspective, but some corrections are in order to clarify certain statements made
in the paper. Mr. José A. Marrero: DC
Specialist for Southern Company Generation Senior Member IEEE Chair IEEE 1189 Vice Chair IEEE 450 & 535 Over 30 years of industry experience as an electrician and engineer; author of numerous papers and articles on all areas
of DC systems maintenance, testing and design, frequent presenter national and international industry conferences.
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Response to Perspective NERC PRC-005
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Ohmic Measurements as a Tool For determining
Capacity of a Stationary Lead-Acid Battery |
The
official position regarding this question from Hoppecke as a lead-acid manufacture is that ohmic values of a cell cannot be used to determine the capacity of a cell or battery. However, we believe it is
a useful tool in determining whether a capacity test is justified to confirm the
true condition or performance of the cell or battery.
That being said, I have the additional comments regarding the discussion initiated by Jose Marrero’s
comments to “ A Response to A Utility perspective of Substation Battery Maintenance
and NERC PRC-5” and Paul Grogan’s response to those comments.
Larry
Meisner
Managing Director & V.P. Technology
Hoppecke Batteries Inc
Senior Member IEEE Over 35 years of industry experience as a quality manager, engineering & technical manager
for major battery manufactures of lead acid and nickel cadmium battery systems;
author of numerous papers in battery technology and design. |
Ohmic Measurments vs Capacity Tests
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