换流阀设备换相失败故障的暂态分析  

Analysis on Transient Commutation Failure Fault on Converter Valve

作　　者：许韦华 陈争光 汤广福 查鲲鹏 

机构地区：[1]智能电网研究院,北京市昌平区102200

出　　处：《电网技术》2013年第6期1759-1763,共5页Power System Technology

基　　金：国家电网公司大电网重大专项资助项目(SGCC-MPLG004-2012)~~

摘　　要：换相失败故障发生后引起的的故障电流会对直流输电系统带来严重影响。目前,对换相失败故障发生后暂态机制的研究主要针对的是作为理想开关的换流器,文章利用叠加原理和等效分析的方法考虑了实际阀参数对故障电流的影响,并通过建立考虑实际换流阀的12脉动换流器的PSCAD仿真模型,将仿真波形与理论分析结果进行对比,验证了理论分析方法的正确性。The fault current caused by commutation failure seriously affects the secure operation of HVDC power transmission system. At present, the attention of the research on the mechanism of transient after the occurrence of commutation failure is paid to the converter that is regarded as ideal switch, in this paper, utilizing the method based on superposition principle and equivalent analysis the influences of actual valve parameters on fault current are taken into account, and by means of constructing a PSCAD simulation model, in which the 12-pulse converter used in actual converter valves is considered, the waveforms from simulation results are compared with the results from theoretical analysis to verify the correctnessof theoretical analysis method.

关 键 词：换相失败 故障电流 暂态机制 

分 类 号：TM564[电气工程—电器]