Unified power flow controller system and converter wattless control method

The invention provides a unified power flow controller system and a converter wattless control method. According to a preset active power reference valve, a reactive power reference value and a network-side three-phase voltage, an active current reference value and a reactive current reference value are obtained as input values of an inner loop current controller, thereby realizing wattless supporting for a power transmission network. The unified power flow controller system and the converter wattless control method have advantages of simple wattless control structure of the converter, high stability and high speed in wattless control, and high reliability. 本发明提供了统潮流控制器系统及换流器无功控制方法，根据设定的有功功率参考值、无功功率参考值及网侧三相电压，得到有功电流参考值和无功电流参考值，作为内环电流控制器的输入值，实现了对输电网络的无功支撑。本发明的换流器的无功控制结构简单，无功控制平稳快速，且可靠性高。