电力系统实时等值及电压稳定性分析  

POWER SYSTEM EQUIVALENT IN REAL TIME AND VOLTAGE STABILITY ANALYSIS

作　　者：邱晓燕[1] 李兴源[1] 王建[1] 刘红超[1] 

机构地区：[1]四川大学电气信息学院,四川省成都市610065

出　　处：《电网技术》2004年第7期7-9,48,共4页Power System Technology

基　　金：国家重点基础研究专项(G1998020311)。

摘　　要：根据实时测量的负荷节点的电压、电流相量,将整个系统等值为一简单的两节点系统,在此基础上进行电压稳定性分析,提出了一种根据定义的节点电压稳定性指标能快速估计节点电压稳定性的方法,并将其扩展到计及负荷静态特性的情况。文章分析了发电机无功功率极限对电压稳定性的影响。通过中国电力科学研究院EPRI-36节点系统算例,验证了该分析方法是一种简单、快速、有效的方法,且可应用于电力系统电压稳定性的实时监控。According to the voltage and current phasors at the load bus which is measured in real-time, the whole system can be equivalent to a simple 2-bus system and on this basis the voltage stability analysis is carried out and a method by which the stability of nodal voltage can be quickly estimated with the defined nodal voltage index is presented and is expanded to the situation taking account of the static characteristics of loads. Here, the influence of reactive power limits on voltage stability is analyzed. By means of the calculation example of CEPRI-36-bus system the verification result shows that the presented method is simple, fast and effective and can be used to the real-time supervision and control of power system voltage stability.

关 键 词：电力系统 电压稳定性 实时等值 负荷静态特性 无功功率 

分 类 号：TM712[电气工程—电力系统及自动化]