| 引用本文: | 包宇喆,陶春蓉,梅志强,葛国伟.电阻型故障限流器电流转移特性研究[J].电力系统保护与控制,2020,48(15):27-33.[点击复制] |
| BAO Yuzhe,TAO Chunrong,MEI Zhiqiang,GE Guowei.fault current limiter; current commutation; vacuum arc; arc voltage[J].Power System Protection and Control,2020,48(15):27-33[点击复制] |
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| 摘要: |
| 电流转移过程是电阻型故障限流器中的关键问题。针对基于真空开关与电阻并联的限流器中电流由真空电弧电流向并联限流电阻的转移特性进行研究。搭建了基于真空开关与限流电阻并联的试验研究平台，采用高速CMOS相机拍摄电弧，观测真空电弧转移过程中电弧发展变化。通过研究电流大小(5~15 kA)、限流电阻大小(10~4500 m?)、燃弧时间、电流频率等对电流转移时间、转移完成时刻电流等的影响，获得了电流转移特性的数学描述。讨论了横向磁场对电流转移特性的影响，为电阻型故障限流器的结构及优化奠定了基础。 |
| 关键词: 故障限流器 电流转移 真空电弧 电弧电压 |
| DOI：DOI: 10.19783/j.cnki.pspc.191134 |
| 投稿时间：2019-09-18修订日期：2019-04-23 |
| 基金项目:国家自然科学基金项目资助(51977195，51777025) |
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| fault current limiter; current commutation; vacuum arc; arc voltage |
| BAO Yuzhe,TAO Chunrong,MEI Zhiqiang,GE Guowei |
| (1. State Grid Zhengzhou Power Supply Company, Zhengzhou 450000, China; 2. Henan Bohui Ark Consulting Development
Co., Ltd., Zhengzhou 450000, China; 3. School of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China) |
| Abstract: |
| The current commutation process is a key performance factor in a resistive fault current limiter. The main aspect of the research is associated with the fact that the current commutating characteristic of the current can be diverted into the Current Limiting Resistor (CLR) from the Vacuum Circuit Breaker (VCB). The test platform based on the VCB and the CLR in parallel connection is established. A high-speed CMOS camera is used to investigate the development of the vacuum arc in the current commutating process. The influence of the current amplitude (5~15 kA), the CLR resistance (10~4500 mΩ), the arcing time, the Transverse Magnetic Field (TMF) and the current frequency on the time of the current commutation and the current at the moment of the completion transition is analyzed. The mathematical description of the vacuum arc commutating characteristic is obtained. The interaction between the vacuum arc and the TMF is discussed. This paper provides the foundation for the structure and parameter optimization of the resistive fault current limiter.
This work is supported by National Natural Science Foundation of China (No. 51977195 and No. 51777025). |
| Key words: fault current limiter current commutation vacuum arc arc voltage |
