隔离开关电弧流体数学模型研究与应用

doi:10.19595/j.cnki.1000-6753.tces.200321

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Abstract In the paper, the kinetic properties of microparticles are studied based on the streamer discharge theory, and a fluid arc mathematical model applied in centimeter clearance is established. An test platform is built for the disconnector arc characteristics, and the transient characteristics of the arc voltage and current waveforms are compared and analyzed. It can be concluded that the change rule of arc resistance is determined by space electron number density and electric field intensity during the breakdown process. The arc resistance falls faster in 0~1.7ns, and then gradually slows down. The plasma channel is completely turned on at 10.89ns, and the arc resistance is reduced to 0.02Ω. Then, the gas medium begins to recover that determined by the characteristics of power voltage and current. The error range between the simulated voltage waveform and the measured data is 2%~10%. Therefore, the fluid arc mathematical model can scientifically explain the dynamic development process of microparticles in the contact clearance. It combines the system voltage characteristics, structure characteristics of disconnector with the development process of microparticles, which provides a theoretical basis for the design of disconnector.

Key words： Disconnector Disconnector arc model arc model streamer discharge streamer discharge dielectric recovery dielectric recovery

Received: 29 March 2020

PACS:

TM501

Fund:国家自然科学基金资助项目（51637006, 51777130）

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	Hao Sha
	Hao Sha
	Xu Jianyuan
	Xu Jianyuan
	Lin Xin
	Lin Xin

Cite this article:

Hao Sha,Hao Sha,Xu Jianyuan等. Study on the Application of Fluid Arc Model in Disconnector[J]. Transactions of China Electrotechnical Society, 2021, 36(13): 2710-2718.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.200321 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/I13/2710

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