不同静态负荷模型对电力系统暂态稳定性影响分析  

Analysis of Influence of Different Static Load Models on Power System Transient Stability

作　　者：吴国庆 黄新宇 WU Guoqing;HUANG Xinyu(Fujian Yunzhong Power Technology Co.,Ltd.,Fuzhou 350100,Fujian,China;School ofElectronics,Electrical and Physics,Fujian University of Engineering,Fuzhou 350118,Fujian,China)

机构地区：[1]福建云众动力科技有限公司,福建福州350100 [2]福建工程学院电子电气与物理学院,福建福州350118

出　　处：《电气传动自动化》2023年第2期53-58,73,共7页Electric Drive Automation

摘　　要：随着电网复杂程度不断提升,人们对其安全稳定性越来越重视。负荷模型的正确选取与电网安全稳定性密切相关。本文以静态负荷模型为研究对象,选取感应电动机并联ZIP负荷的经典负荷模型,并利用IEEE 3机9节点系统进行了仿真。通过设置三种不同的静态负荷模型,在三相短路故障发生时得到它们对电力系统暂态稳定性的影响结果并进行了分析。仿真结果表明,恒功率模型与恒阻抗模型相比,恒功率模型的波动范围更小、安全性更强、稳定性更优,因此应当谨慎正确地选取静态负荷模型。With the increasing complexity of power grid,people pay more and more attention to its security and stability.The correct selection of load model is closely related to the security and stability of power grid.This paper takes the static load model as the research object,selects the classical load model of the parallel ZIP load of induction motor,and simulates it using IEEE 3-machine 9-node system.By setting three different static load models,the results of their influence on the transient stability of power system are obtained and analyzed when three-phase short circuit fault occurs.The simulation results show that the constant power model has smaller fluctuation range,stronger security and better stability than the constant impedance model.Therefore,the static load model should be carefully and correctly selected.

关 键 词：静态负荷模型 ZIP负荷 暂态稳定 

分 类 号：TM418[电气工程—电器] TM714