SF<sub>6</sub>断路器灭弧室内电弧特性参数间的相互关系研究

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Abstract Arc characteristic is one of the key factors for investigating the interruption performances in circuit breakers. In this paper, based on thermal flow field simulation, correlations of the arc parameters including temperature, density, and electric potential during the interruption process of a 252kV puffer-type circuit breaker are investigated. It is found that gas pressure is relatively high in the arc zone, while gas density is low; arc temperature is almost the highest where the electric potential lines are intensive; distribution of gas flow velocity is opposite from that of temperature in the arc zone; shock wave leads to decrease of gas pressure, enlargement of arc radius, and reduction of arc temperature, where the gas flow velocity could exceed the sonic velocity. This research provides a reference for a direct recognition of the gas flow filed distribution and the interaction rule of various arc parameters.

Key words： arc characteristics gas density gas pressure gas velocity arc potential

Received: 10 October 2020

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	Articles by authors
	YAN Xu
	JIANG Xu
	ZHU Kai
	LU Yuanjing

Cite this article:

YAN Xu,JIANG Xu,ZHU Kai等. Research on the correlation between arc parameters in the SF₆ circuit breaker interrupter[J]. Electrical Engineering, 2021, 22(5): 6-9.

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http://dqjs.cesmedia.cn/EN/Y2021/V22/I5/6

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