基于静止无功补偿装置的三相不平衡负荷补偿方案的研究

Study on Reactive Compensation Methods based on SVC for Three-phrase Unbalanced Load

介绍了两种基于SVC的三相不平衡负载补偿方案，使用Matlab／Simulink对补偿方案进行了仿真，验证了其可行性。在此基础上，提出了一种改进的补偿方案，并通过仿真，验证了其优越性。最后，在实验室搭建了一套低压、小容量SVC系统，进行了实验验证。实验结果表明，设计的基于选取控制策略的SVC控制系统，能够达到较快的响应速度和较好的补偿精度，可实现对三相不平衡负载的快速动态无功补偿，达到了预期的补偿效果。

Two reactive compensation methods based on SVC for three-phrase unbalanced load are introduced. Then ,the chosen control methods are proved to be practicable by the simulation results of MATLAB/Simulink. On the basis,an improved compensation method is proposed,with its advantage proved by simulation. Finally,a low-voltage and small-capacity SVC system is built in the laboratory. The experiment results show that the designed SVC control system based on the chosen control method can achieve a quick response and good compensation accuracy,implement fast dynamic reactive power compensation for three-phrase unbalanced load,which coincides with the expected effect of compensation.