Actions for {open_quotes}Secure Bus{close_quotes} disturbance-free power at the utility substation level [electronic resource].

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{open_quotes}Secure Bus{close_quotes} disturbance-free power at the utility substation level [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1996.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
15 pages : digital, PDF file
Additional Creators
Los Alamos National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Over the last 18 months Public Service Company of New Mexico (PNM), El Camino Real Engineering, Inc. (CRE), Los Alamos National Laboratory (LANL) and Sandia National Laboratories (SNL) have worked on the development of disturbance-free power at the medium voltage substation level. The work resulted in the Secure Bus concept, a system in which a medium voltage bus in a substation is immune to power outages and voltage sags on the utility source. The Secure Bus voltage is also immune to voltage sags resulting from faults on any distribution feeder connected to the bus. The Secure Bus concept originated from work conducted to improve power quality for large high-tech manufacturing facilities, in particular for large semiconductor manufacturing plants. For the demands on quality power of a modern facility conventional equipment is not adequate for protecting the end user. For example, the operation of conventional vacuum breakers during short circuit conditions on a feeder circuit, requiring 3 to 5 cycles for breaker opening, does not allow for fast enough current interruption to avoid a voltage dip on the main bus. A sever voltage sag could result in a shut down of sensitive equipment being supplied by the other feeder circuits, which are connected to the main bus. The circumvent the problem, a fast breaker was introduced which interrupts the short circuit before the current causes a significant voltage disturbance. To make the bus immune also to power disturbances caused by power outages, energy storage is introduced to provide the necessary energy back-up in case the primary source is not available.
Report Numbers
E 1.99:la-ur--96-3673
E 1.99: conf-961025--1
conf-961025--1
la-ur--96-3673
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
12/01/1996.
"la-ur--96-3673"
" conf-961025--1"
"DE97001723"
1996 Power distribution annual conference, Austin, TX (United States), 21-23 Oct 1996.
Jones, W.H.; Boenig, H.J.
Funding Information
W-7405-ENG-36
View MARC record | catkey: 14109175