Combination of Reactive Current Droop Compensation and Line Drop Compensation for Improving Voltage Stability  

作　　者：TIAN Qing LIN Xiang-ning 

机构地区：[1]Southeast Shanxi Ultra High Voltage Administrative Bureau, State Grid Operation Company Limited, Changzhi 047100, China [2]Department of Electrical Engineering, China Three Corges University, Yichang 443002, China

出　　处：《高压电器》2009年第4期5-11,共7页High Voltage Apparatus

基　　金：Project Supported by National Natural Science Foundation of China(50407010)

摘　　要：Recent events related to power system failure have shown that voltage collapse can be a cause of widespread outages.The thrust of this paper is to discuss and establish means of mitigating system voltage instability by using a combination of both reactive current droop compensation and line drop compensation.It is shown that the point that the voltage regulator controls can be defined by a new method which is based on a widely accepted voltage stability analysis tool.This tool can be used to determine which generators will have an impact on the maximum permissible loading of a bus.Dynamic analysis was carried out on the CIGRE Nordic test system to study the impact of control point location on time to collapse and it is shown that the new scheme can improve the voltage stability.Recent events related to power system failure have shown that voltage collapse can be a cause of widespread outages. The thrust of this paper is to discuss and establish means of mitigating system voltage instability by using a combination of both reactive current droop compensation and line drop compensation. It is shown that the point that the voltage regulator controls can be defined by a new method which is based on a widely accepted voltage stability analysis tool. This tool can be used to determine which generators will have an impact on the maximum permissible loading of a bus. Dynamic analysis was carried out on the CIGRE Nordic test system to study the impact of control point location on time to collapse and it is shown that the new scheme can improve the voltage stability.

关 键 词：电力系统 电压 电流 稳定性 

分 类 号：TM712[电气工程—电力系统及自动化] TM63