摘要
直流输变电系统用无源型高压直流转换开关是直流系统中的重要运行设备,其运行工况及工作特性极其特殊。笔者通过对高压直流转换开关工作原理及工况进行研究,并依据试验测得的断口电弧电流曲线的特征,对高压直流转换开关开断转换电流的电弧电流特性进行理论研究及分析,给出了电弧电流特性函数,指出高压直流转换开关开断的关键点是断口的弧阻小,变化率大,L1C1辅助支路频率高,才能开断较大的直流电流。
The passive high-voltage direct current（HVDC）circuit breaker is important for ensuring reliability of HVDC distribution system, and its working condition and characteristic are particular. In this paper, the working condition and characteristic of HVDC circuit breaker in HVDC transmission and distribution system are analyzed, the arc current characteristic of the breaker is investigated according to test data, and a function for describiiag arc current characteristic of the breaker is achieved. Conclusion is drawn that small arcing resistance, high varying rate, and high frequency of L1C1 circuit can facilitate breaking larger direct current by HVDC circuit breaker.
出处
《高压电器》
CAS
CSCD
北大核心
2012年第9期67-71,共5页
High Voltage Apparatus
关键词
高压直流
无源型直流转换开关
转换电流
电弧电流特性
HVDC（high voltage direct current）
passive DC circuit breaker
transfer current
arcing current characteristic
