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| Research on the Polarity Configuration of Laser Triggered Vacuum Switch |
| He Zhenghao1,Wei Liangcai1,Mao Xiaopo1,2,*,Wang Ying3,Lin Huazhong3,Luo Yayun1,Huang Qiang4 |
1. State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan Hubei 430074 China;
2. Electric Power Research Institute, State Grid Hubei Electric Power Corporation Wuhan Hubei 430077 China;
3. State Key Laboratory of Laser Technology Huazhong University of Science and Technology Wuhan Hubei 430074 China;
4. Nanchang Institute of Technology Nanchang Jiangxi 330099 China |
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Abstract The basic structure and working mechanism of Laser Triggered Vacuum Switch (LTVS) are briefly introduced, while the processes of primary plasma production and expansion are analyzed. A series of experiments have been carried out under different polarity configuration mode of LTVS, the dependence of conduction time delay and jitter time delay on polarity is described, the effect of main electrode and the expansion of primary plasma is analyzes, the theoretical basis for structure optimization design of LTVS is provided. Under positive polarity configuration, which is beneficial to generate the cathode spots, the high working reliability and small time delay of LTVS is verified by the experiments, it proves that the expansion of primary plasma is the growth of near cathode plasma sheath.
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Received: 10 July 2014
Published: 08 September 2015
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2015, Vol. 30 
