并联型电网短路限流多目标控制

Multi-objective Control of Parallel Grid Short-circuit Current Limiting

研究一种新型并联型电网短路电流限制调节装置,在分析装置工作原理的基础上,对系统中出现的典型电能质量问题提出了多目标控制策略,能综合解决电压跌落、谐波等问题。同时,在负荷侧发生短路故障时,还能实现限制短路电流的控制目标。基于PSCAD/EMTDC仿真软件建立了多目标电能质量调节器的仿真模型,仿真结果验证了所提出的主电路拓扑和控制策略的正确性和有效性。

A new kind of parallel grid short-circuit current limiter is presented and studied in this paper.Based on the operating principle of the device,multi-objective control strategy is proposed for the typical power quality problems such as voltage drop and harmonics.Meanwhile,when the load side short circuit fault occurs,short-circuit current can be limited.The research has established the simulation model for multi-objective power quality regulator based on PSCAD/ EMTDC software.Simulation results show that the proposed main circuit topology and control strategy are correct and effective.