摘要
为了正确模拟液态金属限流器的限流过程,以液态金属限流器短路试验系统为研究主体建立了基于电磁暂态分析仿真平台PSCAD/EMTDC的含液态金属限流器的非线性电路仿真模型,并对液态金属限流器限流暂态过程进行了仿真分析。针对液态金属限流器燃弧过程复杂的特点,基于电弧的外特性采用设定等效时变非线性电导的方法对燃弧过程进行了模拟。仿真分析得到的液态金属限流器限流暂态过程中电压电流特性符合实际试验结果,证明了该方法对于模拟液态金属限流器暂态过程的正确性。
To calculate the current limiting process of the Liquid Metal Current Limiter （LMCL） , this paper considers the short-circuit test system for LMCL as the main object and builds a simulation model of a nonlinear circuit including LMCL based on the electromagnetism transient analyze tool PSCAD/EMTDC, then simulates the transient current limiting process of the LMCL. Aiming at the characteristics of the complex change event of arc, an equal dynamic and nonlinear conductance is set to simulate the arc based on arcs external characteristic. The obtained simulated waveform of limited current and LMCL＇ voltage which characterize the LMCL transient are consistent with the real test results, so the correctness of using this method to simulate LMCL transient is verified.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2010年第1期6-9,共4页
Power System Protection and Control
基金
国家自然科学基金委员会创新群体科学基金(50721063)
