FACTS对多机系统静态电压稳定性的影响

摘要

针对一个两区域薄弱互连的4机系统，利用负荷裕度指标和P U曲线平坦度指标，衡量了FACTS设备对系统静态电压稳定性的影响。连续潮流法潮流计算结果表明SVC，STATCOM，TCSC等3种FACTS设备都可以在不同程度上改善系统的静态电压稳定性，改善的效果与设备参数的选取有关。对于所研究的4机系统，为了提高系统的静态电压稳定性，装设TCSC进行串联补偿可以取得比装设SVC，STATCOM进行并联补偿更好的效果。%With the loading margin index and the P-U curve flatness index, the effect of FACTS devices on the static voltage stability of a four-machine power system is studied, which includes two weakly connected areas. Using continuation method, the power flow computation is performed. The results show that, depending on their parameters, the three FACTS devices of SVC,STATCOM and TCSC can improve the static voltage stability of power system to different extent. As to the four-machine system studied, the serial compensation of TCSC may achieve better effect than that of the shunt compensation of SVC and STATCOM in improving the static voltage stability of power system.