再论高压直流开断试验回路等价性

A PROFOUND ANALYSIS OF EQUIVALENCE OF SYNTHETIC TEST CIRCUIT ON HVDC INTERRUPTION

本文研究了模拟直流电源的低频振荡效率f的变化对开断电流,I_0的影响,进一步讨论了高压直流开断试验回路的等价性问题,从而提出如果选择低频振荡频率f≤1/25t_c,则开断电流的衰减率d≤15%,认为开断电流的等价性较好。这一结果对于高压直流开断技术的研究具有重要意义。

This paper goes a step further on inverstigation of equivalence of synthe-tic test circuit for HVDC interruption with capacitive energy storage.Theeffects of frequency of simulating DC current on the interrupting current arestudied.The synthetic test circuit with f≤1/25t_c for the requirement of dampfactor of d≤15%,is recognised to be equivalent to a real circuit.