大容量静止同步补偿器应用效果分析

The Application Effect Analysis of Large-capacity Static Synchronous Compensator

STATCOM是目前最先进的动态无功补偿装置,但实际应用中存在诸多问题。首先,详细介绍一种高压大容量STATCOM装置的运行方式及控制模式;其次,以单次STATCOM暂态启动详细过程为起点,结合总计91次暂态启动数据支撑,深入分析了STATCOM装置应用中的实际响应速度、无功输出情况和支撑电网电压的效果,并列举了STATCOM支撑电网电压效果不明显的各方面原因。最后,针对相应问题提出有效的改进建议。

Although STATCOM is the most advanced dynamic reactive power compensation device at present,its practical application has many problems.This paper proposed a new kind of STATCOM operating and controlling mode when the device has high voltage and large-capacity.The paper introduced a single STATCOM transient start-up process in detailatfirst.Combined with a total of 91 times'transient operating data,the actual response speed and reactive power output as well asthe effectsthat STATCOM device has on power grid voltage supportare profoundly analyzed.Based on the results,the paper made a technical analysisof the reasons why STATCOM devices havepoor performances on power grid voltage support.At the end of paper,some effective suggestions have been put forward.