摘要
提出一种基于同步相量测量的电压稳定评估算法。算法中只需要利用局部同步相量测量 ,即被监测负荷节点的同步电压相量 ,及由与其相连接的同步电压相量所得到的等价电压相量 ,建立一等价两节点系统。最后 ,以被监测负荷节点的同步电压相量在等价电压相量的投影与等价电压相量幅值的一半之差 ,作为计算电压稳定与否的指标。将这个算法应用于一个 5节点系统中 。
A simple and systemic algorithm to obtain voltage stability proxim ity based on synchronized phasor measurement SPM for transm ission system is presented. At each target bus,the system is converted into two- bus system,i.e.,the target itself and one equivalent voltage source.The equivalent voltage source is obtained by using only local SPMs that contact directly to the target bus. Finally,the difference between the target phasor's projection on the equivalentphasor and a half of the m agnitude of this equivalent phasor is used as the index to estim ate the voltage stability assessm ent.This algorithm is tested on a5 - bus system with different operating scenarios.The testing results are presented in this paper and prove the accuracy and rationality of the algorithm .
出处
《电力系统自动化》
EI
CSCD
北大核心
2002年第2期28-33,共6页
Automation of Electric Power Systems
关键词
电力系统
电压稳定评估算法
同步相量测量
voltage stability
voltage stability assessment
synchronized phasor m easurem ent SPM
