应用电场强度等效法的特高压交流双回线路双摆防舞器电晕试验及优化设计

doi:10.19595/j.cnki.1000-6753.tces.210903

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Abstract In terms of the corona discharge phenomenon of double-swinging protectors on an ultra high voltage alternating current(UHVAC) double-circuit transmission line, combined with finite element method and field strength equivalent method, the surface electric field of the double-swinging protectors, in the transmission line and the single-phase simplified test layout, was analyzed and optimized, besides the corona test voltage was obtained and the corona test was performed. The results show that shortening the effective swing arm length and increasing the pendulum radius can increase corona onset voltage effectively; The original double-swinging protectors of ellipsoidal pendulum failed to pass the corona test, suggested to replace it with a large-size hollow spherical pendulum and shorten the effective swing arm length to adjust the electric field characteristics on the premise of a certain total weight. After optimization, the double-swinging protectors has passed the three-phase transmission line test, without observed corona discharge. The research results can provide guidance for the design and manufacture of line fittings.

Key words： Ultra high voltage(UHV) equivalent electric field strength method line fittings corona test

Received: 19 June 2021

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TM726

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	Liu Peng
	Guo Yiyu
	Lin Rui
	Zhao Jiqian
	Quan Shanshan

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Liu Peng,Guo Yiyu,Lin Rui等. Equivalent Electric Field Strength Method used in Corona Test and Optimization Design of Double-Swinging Protectors for UHVAC Double Circuit Tension Support[J]. Transactions of China Electrotechnical Society, 2022, 37(15): 3963-3972.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.210903 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I15/3963

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