SVC和STATCOM比较及其在西电东送线路应用

Comparison Between SVC and STATCOM and Their Application in the West-toEast Transmission Lines

SVC和STATCOM都是常见的FACTS装置,具有良好的动态无功补偿能力。本文对其多种性能指标进行了比较,然后选取南方电网西电东送线路中装设有SVC或STATCOM的变电站,仿真研究在SVC或STATCOM装设前后变电站的稳态电压调控和故障电压变化。结果证明,这两种FACTS装置均有助于调节变电站母线电压,并增强了故障下的电压支撑能力,明显改善了西电东送线路的电压水平。

Both SVC and STATCOM, the devices of FACTS, have good performances of dynamic reactive power compensation. Doing comparison of their many performance indexes, then selecting certain substations installed with an SVC or STATCOM device in the West to East lines of China Southern Power Grid, this paper does simulation study on the static voltage regulation and fault voltage change before and after the device installation. It is proved that these devices of FACTS are able to regulate the bus voltage of substation, and improve the voltage supporting in fault case, and thus enhancing the voltage status of the West to East lines.