直流输电全景巡检换流阀非周期触发试验研究

摘要

Based on the analysis of the basic principle and structure of the direct current(DC) power transmission converter valve,the characteristics of saturated reactor in the converter valve are analyzed and the calculation method of its key parameters is given.The non-periodic firing test based on shunt capacitor method is studied,and the key points and risk points in the test are analyzed in detail.The simulation model of non-periodic firing test based on shunt capacitor method is established,the effect of shunt capacitor and shunt resistor on the test waveform is studied,and the correctness of the simulation is proved through the actual test.Finally,the parameters of shunt capacitor and shunt resistor in practical test are proposed.The research results can provide reference for the non-periodic firing test of DC power transmission converter valve in the future.%在分析直流输电换流阀基本原理和结构组成的基础上,对换流阀饱和电抗器特性进行了分析,给出了其关键参数的计算方法.研究了基于并联电容器法的非周期触发试验,对试验中的关键点和风险点进行了详细分析.建立了并联电容器法非周期触发试验的仿真模型,研究了并联电容和并联电阻对试验波形的影响,并通过实际试验证明了仿真的正确性.最后,提出了实际试验时并联电容和并联电阻的参数建议值.研究结果可为今后直流输电换流阀的非周期触发试验提供参考.