多个静止无功补偿器并联运行的结构选择

Structure Selection for Parallel Operation of Sevexal Static Var Compensator

多个静止无功补偿器(STATCOM)模块并联运行是解决大容量无功补偿的有效方法。本文在分析了现有并联结构的基础上,选择了集中控制型结构。该种结构下,由集中控制器计算无功电流并进行分配,各STATCOM模块根据集中控制器给出的指令发出补偿电流。建立了STATCOM模块并联运行的仿真系统,仿真结果显示,该方案在运行过程中有模块故障退出的情况下,仍具有良好的补偿效果。

The parallel operation of multiple STATCOM is a effective methods to solve the problem of enhance the compensating capacity.A parallel operation scheme with centralized-control point was proposed by analyzing the defects of existing parallel system.The centralized-control point calculate and distribute the reactive component of the current.A simulation system for this parallel operation scheme is established,and the simulation results show that this scheme has an excellent compensation performance even if a fault STATCOM goes out of service.