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Experimental Research on Overvoltage in Switching off Shunt Reactor and Capacitor of Vacuum Circuit Breaker

Author: FuWenGuang
Tutor: ChangXianRong
School: North China Electric Power University
Course: Electrical Engineering
Keywords: Vacuum breaker Overvoltage Closure Rekindle
CLC: TM866
Type: Master's thesis
Year: 2011
Downloads: 99
Quote: 0
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Abstract


Operating over-voltage vacuum circuit breakers at home and abroad , Research overview and analysis from the theoretical aspects of the mechanism of the vacuum circuit breaker over-voltage power reactors and capacitors , the vacuum breaker breaking capacity inductive load , due to the closure phenomenon sometimes produce higher amplitude and steepness of the overvoltage and reignition of harm to the equipment insulation breaking 35kV reactors and capacitor test site . Taken to replace the circuit breaker vacuum bubbles , using ordinary metal oxide surge arresters , band gap and without gap the modular metal oxide surge arresters, RC absorber such the voltage suppression measures were operating tests measured voltage data and analysis the effectiveness of several protection measures taken , drawn open power reactor over voltage protection program that is installed on the 35kV busbar set RC in situ in the reactor , the installation of a group of RC in order to achieve a better realization protection of the circuit breaker and white , installed in the switch load side group HY5WZ-51/150 * 134 three-phase combined metal oxide surge arresters without gaps . Vacuum breaker breaking of the capacitor voltage to take protective Feasibility field validation tests showed off RC protection device off over the capacitor voltage can be effectively suppressed . Finally, the need to pay attention to the problem of the pros and cons of several protection device performance and use were discussed RC protection device relative superiority of [ the performance of other devices . The conclusions and analysis can be off the broken the 35kV system reactors and capacitor overvoltage protection program to provide a reference on over -voltage protection device design and selection , and at the same time can provide a reference . The overvoltage protection of power system stability and economic operation has important practical significance . Finally , the prospect of in-depth study of high-performance over-voltage protection device .

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CLC: > Industrial Technology > Electrotechnical > High Voltage Engineering > Overvoltage and Its Protection > Over-voltage measurement and test
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