基于广域测量的系统电压崩溃点预测

Predication for Voltage Collapse Point of Power System Based on Wide Area Measurement

许多文章对电力系统电压崩溃问题进行了研究,其中潮流分析的方法是最常见的,大都是以Q-V曲线为基础。近些年,越来越多的人认识到电力系统电压稳定问题是一个动态问题,而电压崩溃点是可以提前预知的。随着GPS(全球定位系统)和PMU(向量测量单元)的进一步应用,广域测量技术应用范围越来越广,其用在电力系统电压崩溃点的预测也将成为必然。本文以广域测量技术为辅助手段,根据功率边缘的概念,使用电压崩溃预测器来预测系统中电压崩溃点的位置。

Many papers have carried out the researches on voltage collapse of power system, in which power flow analysis method often used,and most of these methods are based on Q-V curve. In recent years, more and more researchers have realized that voltage stability of power system is a dynamic phenomenon, and voltage collapse point can be predicted in advance. The application range of wide area measurement technology is much wider with the further application of GPS (Global Position System) and PMU (Phasor Measurement Unit), so it is necessary that wide area measurement technology will be applied to the predication of voltage collapse point of power system. Based on wide area measurement and according to the conception of power margin, the paper proposes a design to predict the voltage collapse point of power system using an indicator