高压开关SF<sub>6</sub>-Cu电弧净辐射系数计算

doi:10.19595/j.cnki.1000-6753.tces.171750

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Abstract Radiation is one of the key processes of energy transport in high-temperature arc plasmas. In high-pressure SF₆ arc, the copper vapor resulting from electrode erosion shows significant influences on the radiation transport in SF₆ arc. In order to provide the basic data of radiation for the simulation of SF₆ arc with consideration of electrode erosion, the calculation model for net emission coefficients (NEC) of SF₆-Cu arc in high-voltage circuit breakers was established in this work based on the study of atomic lines, atomic continuum, and molecular spectrum. The effects of arc radius, arc pressure, and copper concentration were analyzed on the NEC of SF₆-Cu arc. It is found that the resonance lines and non-resonance lines dominate the NEC at low and high temperatures respectively. With the increase of arc radius, the values of NEC are reduced. With the increase of arc pressure, the values of NEC are raised. The existence of copper vapor strongly raises the values of NEC because copper is easier to ionize and excite than nonmetallic elements such as fluorine and sulfur.

Key words： SF₆ arc copper vapor radiation transport net emission coefficient atomic spectrum molecular spectrum

Received: 26 December 2017 Published: 17 December 2018

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TM561

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	Zhong Linlin
	Wang Xiaohua
	Rong Mingzhe

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Zhong Linlin,Wang Xiaohua,Rong Mingzhe. Calculation of Net Emission Coefficients of SF₆-Cu Arc in High-Voltage Circuit Breakers[J]. Transactions of China Electrotechnical Society, 2018, 33(23): 5600-5606.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.171750 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I23/5600

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