用于高压直流输电的晶闸管换流阀运行试验回路等价性比较

现代晶闸管阀的大容量使得难以采用传统的背靠背试验回路对其进行运行试验。替代型等效试验回路的应用显著地降低了运行试验所需的设备容量,但其试验等价性是一个值得讨论的问题。对替代型试验回路等价性进行考核的核心在于其是否正确再现作用在晶闸管阀上的负荷。笔者基于EMTP/ATP对现有的三种等效试验回路进行周期性触发和关断试验的仿真,仿真结果表明ABB合成试验回路具有更好的试验灵活性和试验等价性。

Equivalence Evaluation of Operational Test Circuits of HVDC Thyristor Valves

Modern thyristor valves for HVDC are of high power rating and difficult to be tested in a conventional back-to-back test circuit.The application of some equivalent test circuits significantly reduces the size of test facilities,but the test equivalence of those test circuits is worth to be discussed.The core to evaluate the equivalence of those test circuits is whether it can reproduce the stress applied on the valves correctly.Three types of test circuits are introduced in this paper,periodic firing and extinction test have been carried out based on EMTP/ATP simulation.The simulation result verifies that the ABB synthetic test circuit is more flexible in setting test condition and more accurate in reproducing the stress applied on the valves.