负荷模型与静态电压稳定性研究  

Study on load model and steady-state voltage stability

作　　者：李宝国[1] 鲁宝春[1] 刘毅[1] 

机构地区：[1]辽宁工学院信息科学与工程系,辽宁锦州121001

出　　处：《继电器》2003年第6期5-8,共4页Relay

基　　金：辽宁省自然基金(001081)

摘　　要：通过系统供应侧和负荷侧的U-I特性分析,得出了利用供应侧和负荷侧特性曲线的斜率比较来判定节点静态电压稳定性的方法,进而利用该方法分析了多项式负荷模型与节点静态电压稳定性之间的关系,推导出了适合于多项式负荷模型的节点静态电压稳定性的判别公式。该方法简单快速,并可直接应用于实时在线电压稳定分析,实例验证了该方法的正确性。The characteristics of U-I curves of the supply side and the load side in power system are studied in this paper. A new method is presented to judge node steady-state voltage stability by comparing slopes of two characteristic curves at static balance points. This paper analyzes the relation of the multinomial load models and the node steady-state voltage stability, and deduces the formula of judging node steady-state voltage stability. This formula is suitable for the multinomial load model. This method is simple and fast, and can be applied in real-time on-line voltage stability analysis. The computational results show the correctness and the effectiveness of this method.

关 键 词：负荷模型 静态电压稳定性 电力系统 电网 静态模型 

分 类 号：TM712[电气工程—电力系统及自动化]