Paper Title:
Restrike Modeling of Vacuum Circuit Breaker Switching Off Shunt Capacitor Banks with EMTP
  Abstract

The shunt power capacitors are used as a reactive compensator while vacuum circuit breakers are used to switch shunt capacitors in power grid. To research the high over-voltage during switching off the shunt capacitors and a vacuum circuit beaker restriked, the restriking model is built with three-phase vacuum circuit breakers, considering the capacitors’ energy storage characteristic and asynchronous operating. The over-voltage is harmful to the insulation and life-circle of the equipments and even threatens power system safe and stabile operation. The variation trends of both recovery voltage between the contacts and the capacitors voltage are theoretically deduced. The model based on a 220kV substation of Guangdong grid was built and the most serious case that breakers are restriked in two phases are numbered with EMTP. Compared with theoretical results, simulation results are valid and practical.

  Info
Periodical
Advanced Materials Research (Volumes 383-390)
Chapter
Chapter 8: Modeling, Analysis, and Simulation of Manufacturing Processes
Edited by
Wu Fan
Pages
2287-2292
DOI
10.4028/www.scientific.net/AMR.383-390.2287
Citation
Y. Y. Wang, S. H. Liu, W. Z. Liu, K. Y. Wang, "Restrike Modeling of Vacuum Circuit Breaker Switching Off Shunt Capacitor Banks with EMTP", Advanced Materials Research, Vols. 383-390, pp. 2287-2292, 2012
Online since
November 2011
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Price
$32.00
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