一种静态电压稳定判据的实用计算方法  

A Practical Algorithm for Static Voltage Stability Criterions

作　　者：秦文萍[1] 

机构地区：[1]太原理工大学电气与动力工程学院,山西太原030024

出　　处：《太原理工大学学报》2008年第4期387-390,共4页Journal of Taiyuan University of Technology

基　　金：太原理工大学校青年基金资助项目(12901136)

摘　　要：在有功功率和无功功率失稳机理是相互联系而非各自独立理论的基础上,研究了电力系统固有的静态电压稳定特性。为了解决普通潮流方程在临界点处奇异的问题,将负荷看作可变导纳模型,并以视在功率差值的模来表示从系统运行点到电压临界崩溃点的裕度指标,分析计算了山西省某局部电网的电压稳定性,可为电网运行人员提供技术指导。Based on the coherence theory connected with the active power imbalance mechanism and reactive power imbalance mechanism on the effects for voltage instability, this paper analyzes the inherent characteristics of stead-state voltage stability in power system. So the difference of apparent power is used as the margin index between the stable operation node and the collapsing node of the critical voltage in this paper. At the same time, the adopting admittance model in load bus is used to analyze and compute the voltage stability of the partial network of Shanxi Province in order to deal with the convergence problem at the critical bus. It＇ll give some useful conclusions.

关 键 词：电压稳定 系统特性 裕度指标 负荷导纳模型 

分 类 号：TM712[电气工程—电力系统及自动化]