A New Method to Evaluate the Short-Time Withstand Current for Air Circuit Breaker
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概要
- 論文の詳細を見る
Short-time withstand current is one of the crucial nominal parameters in air circuit breaker. A numerical method to evaluate the short-time withstand current is proposed. Cylindrical current carrying bridge is introduced to describe the contact spot between movable and fixed contacts. Taking into account the action of ferromagnetic splitter plates, the variation of the conductor properties with temperature and the variation of contact spot radius with the electro-dynamic repulsion force, a transient finite element calculation model is developed by coupling the electromagnetic field and thermal field. The loaded short circuit current is considered as the short-time withstand current once the highest temperature is near to the melting point of the contact material. It demonstrates that the method is useful to evaluate the performance of the air circuit breaker.
- （社）電子情報通信学会の論文
- 2008-08-01
著者
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CHEN Degui
State Key Laboratory of Electric Insulation and Power Equipment, Xian Jiaotong University
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LI Xingwen
State Key Laboratory of Electric Insulation and Power Equipment, Xian Jiaotong University
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Chen D
State Key Laboratory Of Electrical Insulation And Power Equipment Xi'an Jiaotong University
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Chen D
School Of Electrical Engineering Xi'an Jiaotong University
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Li Xingwen
Xi'an Jiaotong Univ. Xi'an Chn
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Chen Degui
State Key Laboratory Of Electric Insulation And Power Equipment Xi'an Jiaotong University
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Li Xingwen
State Key Laboratory Of Electric Insulation And Power Equipment Xi'an Jiaotong University
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Tong Weixiong
State Key Laboratory Of Electrical Insulation And Power Equipment Xi'an Jiaotong University
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XIANG Honggang
State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University
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Xiang Honggang
State Key Laboratory Of Electrical Insulation And Power Equipment Xi'an Jiaotong University
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Li Xingwen
Xi'an Jiaotong Univ. Chn
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Li Xingwen
State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University
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