SVC在南方电网西电东送中的应用研究

Study on the Application of SVC to Power Transmitted from West to East in China Southern Power Grid

随着西电东送工程的推进,SVC装置将不断在南方电网西电东送通道中投用。本文介绍了2010年南方电网已经安装的SVC装置的应用情况,并以2010年云广±800 kV直流输电工程投运后的南方电网丰大运行方式为背景,采用新版PSD工具仿真研究大扰动下SVC对扰动下系统稳定性的影响。仿真结果表明:SVC能明显改善扰动下电网的电压稳定性和功角稳定性;楚雄站SVC能有效抑制换流站无功投切引起的电压波动和降低直流双极闭锁引起的过电压;桂林站和独山站的SVC均带有直流融冰功能,提高线路抗冰能力,保障系统稳定。

With the advance development of West-East electricity transmission project,more and more static var compensation（SVC） equipments are applied to China Southern Power Grid（CSG）.In this paper,the application of SVC to CSG is introduced.Based on the high water level peak load operation mode of CSG in the year of 2010 after ±800 kV Yunnan-Guangdong UHVDC system has been put into operation,some simulations on the influence of SVC to system stability after disturbance are carried out with the new PSD simulation tool.Results show that： SVC can enhance voltage stability and angle stability obviously,SVC in Chuxiong Station can well suppress the voltage fluctuation resulted by filter action and over-voltage by bipolar block,and SVC in Guilin and Dushan stations both have deicing function which can enhance the ability of resisting ice weather and ensures a stable power system.