中国电机工程学报Issue(19)：215-223,9.
126 kV模块化三断口真空断路器静、动态均压设计
Static and Dynamic Voltage Sharing Design of 126 kV Modular Triple-break Vacuum Circuit Breaker
摘要
Abstract
Selecting the appropriate value of grading capacitors is an important guarantee for the breaking capacity of a multi-break vacuum circuit breaker. To construct a 126kV modular triple-break vacuum circuit breaker, the U-shaped arrangement was selected based on the calculation results of potential distribution. Then the distributed capacitance parameters of the U-shaped arrangement were calculated by using the finite element method and the results were verified by measured results of power frequency voltage distribution tests. The appropriate value of grading capacitors for static voltage sharing design was selected according to the calculation results of static voltage distribution ratios. A dynamic simulation model of the double-break vacuum circuit breaker was established. The simulation results indicate that the dynamic voltage sharing design should take the influence of the residual charge (RC) into account, and the influence is relevant to the differences of RC parameters among breaks. The appropriate value of grading capacitors for dynamic voltage sharing design was selected according to the calculation results of transient recovery voltage (TRV) distribution ratios. Considering the requirements of static and dynamic voltage sharing designs and other concerned factors, the appropriate value of grading capacitors for the U-shaped vacuum circuit breaker was decided to be 1000pF and the effectiveness was verified by synthetic breaking tests.关键词
模块化三断口真空断路器/有限元法/电压分布/均压设计/暂态恢复电压/均压电容Key words
modular triple-break vacuum circuit breaker/finite element method/voltage distribution/voltage sharing design/transient recovery voltage/grading capacitor分类
信息技术与安全科学引用本文复制引用
吴高波,阮江军,黄道春,舒胜文,涂其华..126 kV模块化三断口真空断路器静、动态均压设计[J].中国电机工程学报,2013,(19):215-223,9.基金项目
“十一五”国家科技支撑计划重大项目(2009BAA19B05)。Key Project of the National Eleventh-Five Year Research Program of China (2009BAA19B05) （2009BAA19B05）
