摘要
为探明真空电弧与并联分流电阻的电流转移特性,针对弧后电流测量装置的电流转移特性展开试验研究。搭建了真空开关与大功率并联分流电阻的电流转移特性试验平台,研究了燃弧时间、主电流峰值、分流电阻等对电流转移特性的影响规律,通过数据处理和简化分析,得到了电流转移特性的数学描述。基于上述电流转移特性,研制了新型弧后电流测量装置并进行了实验验证,分析了合成回路电压源叠加电流、横向磁场吹弧等对电流转移特性及弧后电流测量的影响,试验结果表明:在过零前20μs电流转移过程完成,测量结果可靠。通过该研究得到了真空电弧电流转移特性,为弧后电流测量装置的参数优化设计奠定了基础。
In order to ascertain the vacuum arc current commutation characteristics between the vacuum arc and the parallel-connected shunt resistor, we experimentally investigated the current commutation characteristics of the post arc current measure equipment(PACME). The test platform of the vacuum arc commutating characteristic between the vacuum circuit breaker and the parallel-connected shunt resistor was established. The influences of the current magnitude,resistance of the shunt resistor, and the arcing time on the current commutation characteristics such as the commutation time and current were researched. According to the data process and simplified analysis of the experimental results, the mathematic description of vacuum arc commutation characteristic was obtained. At last, the PACME based on the vacuum arc current commutation characteristic was tested in the synthetic test circuit. The post arc current of the vacuum circuit breakers was measured, and the influences of the superimposed current of the high voltage circuit and the magnetic arc blow on the test results were analyzed. The test results indicate that the vacuum arc current commutation can be finished20 μs before the current zero, which verifies the validity of the results. In conclusion, the vacuum arc commutation characteristic is gained which is useful for the optimal design of the PACME.
作者
葛国伟
程显
谢伟
廖敏夫
吴启亮
段雄英
GE Guowei;CHENG Xian;XIE Wei;LIAO Minfu;WU Qiliang;DUAN Xiongying(School of Electrical Engineering,Zhengzhou University,Zhengzhou 450000,China;State Grid Henan Electric Power Research Institute,Zhengzhou 450052,China;School of Electrical Engineering,Dalian University of Technology,Dalian 116024,China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2019年第3期950-958,共9页
High Voltage Engineering
基金
国家自然科学基金(51407163
51477024
51777025)
中国博士后科学基金(2017M622370)
河南省高校重点科研项目(16A470014
19A470008)
国家轨道交通电气化与自动化工程技术研究中心开放课题(NEEC-2017-B07)~~
关键词
真空电弧
电流转移
弧后电流
真空断路器
分流电阻
vacuum arc
current commutation
post-arc current
vacuum circuit breaker
shunt resistor
