新型电子灭弧技术在机械开关中的应用

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Abstract On the basis of analyzing the shortcomings of traditional arc extinguishing technology in practical application, three new electronic arc extinguishing technologies, AST, ASD and AAE, and their practical effects are introduced. The AST and ASD technologies use electronic switches connected in parallel at both ends of the mechanical switch to form a hybrid switch with the mechanical switch. The parallel electronic switch detects the breaking of the mechanical switch and achieves the effect of extinguishing the arc of the mechanical switch in an extreme short conduction time immediately after the mechanical switch is broken. The AST technology is applied to AC arc extinguishing and the ASD is applied to DC arc extinguishing. The AAE technology is applied to DC arc extinguishing, it uses the energy storage elements connected in parallel at both ends of the load. When detecting the breaking of the mechanical switch, the energy on the energy storage elements is released at an appropriate time to reduce the electric field strength at both ends of the mechanical switch so as to extinguish the arc of the mechanical switch. The arc-extinguishing devices made by using these three arc-extinguishing technologies are independent of mechanical switches, and have been tested and verified that the three devices have good arc-extinguishing effects in their respective fields.

Key words： electric arc electronic arc extinguishing mechanical switches circuit breakers

Received: 19 August 2019 Published: 27 February 2020

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	Articles by authors
	Guo Qiaoshi
	Nie Jia
	Wu Shikun

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Guo Qiaoshi,Nie Jia,Wu Shikun. Applications of new electronic arc extinguishing technologies in mechanical switches[J]. Electrical Engineering, 2020, 21(2): 119-123.

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http://dqjs.cesmedia.cn/EN/Y2020/V21/I2/119

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