电动机负荷动态特性对系统电压稳定影响的研究  

On the Influence of Dynamic Load Characteristics of Electric Motors on System Voltage Stability

作　　者：罗凌 刘溟 聂云 涂长庚 LUO Ling;LIU Ming;NIE Yun;TU Changgen(State Grid Loudi Power Supply Company,Loudi 417000,China;Central China Branch of State Grid Corporation of China,Wuhan 430070,China;State Grid Hunan Electric Power Co.,Ltd.,Changsha 410029,China)

机构地区：[1]国网娄底供电公司,湖南娄底417000 [2]国网华中分部,湖北武汉430070 [3]国网湖南省电力有限公司,湖南长沙410029

出　　处：《水电与新能源》2025年第2期13-16,41,共5页Hydropower and New Energy

摘　　要：为探讨负荷特性对电力系统电压稳定性的影响,构建了电力系统多项式负荷模型和异步电动机负荷模型,以IEEE39节点系统为算例,采用PSASP软件,仿真分析了电动机负荷的动态特性以及它对系统电压稳定的影响。仿真结果表明,在系统的某些关键节点处装设低压减载装置能够有效地提高系统的电压稳定性。To explore the influence of the load characteristics on the voltage stability of power systems,polynomial load model of the power systems and load model of asynchronous motors are established.Taking the IEEE39 node system as an example,PSASP software is used to simulate and analyze the dynamic load characteristics of motors and the influence on system voltage stability.The simulation results show that the voltage stability of the power system can be effectively improved by installing low-voltage load shedding devices at certain key nodes of the system.

关 键 词：电力系统 电压稳定 负荷特性 低压减载 

分 类 号：TM343[电气工程—电机]