环保型罐式多断口真空断路器均压配置研究

doi:10.19595/j.cnki.1000-6753.tces.201670

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Abstract Environment-friendly tank type multi-break vacuum circuit breakers(TMCBs) is one of the future trends of high voltage vacuum circuit breaker, but the current research on the voltage-sharing configuration of TMCBs was insufficient. First of all, this paper proposed a three-dimensional electric field simulation model of the TMCBs, and the difference of voltage, electric field and equivalent capacitance parameter between tank structure and traditional column structure were compared and analyzed. Becaus the stray capacitance of the tank structure increased, its voltage distribution between breaks were more nonuniform. Then we designed the unilateral, bilateral, trilateral and cylindrical configurations of different grading capacitors, and studied the influence of different configurations on the voltage distribution between breaks and the change law of electric field inside the tank. From excellent to poor, the research shows that the voltage equalization effect of different configurations is cylindrical capacitors, unilateral capcacitors, trilateral capacitors and bilateral capcacitors. The maximum electric field strength between metal connection of cylindrical capacitors is 3kV/mm, and is much less than 15~20kV/mm of other capacitors configurations. This research provides a reference for the voltage-sharing configuration of tank type multi-break vacuum circuit breakers.

Key words： Tank-type circuit breaker multi-break vacuum circuit breakers grading capacitor voltage distribution electric field distribution

Received: 21 December 2020

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TM561.2

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	Cheng Xian
	Du Shuai
	Ge Guowei
	Tian Xiaoqian
	Chen Hui

Cite this article:

Cheng Xian,Du Shuai,Ge Guowei等. Study on Voltage-Sharing Configuration of Environment-Friendly Tank Type Multi-Break Vacuum Circuit Breakers[J]. Transactions of China Electrotechnical Society, 2021, 36(15): 3154-3162.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.201670 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/I15/3154

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