负荷特性对电力系统电压稳定性影响的研究  

Influence of Load Characteristics on Voltage Stability of Power System

作　　者：申云朝 邓涛 雷亚兰[1] 李建东[1] 方艳斌 Shen Yunchao;Deng Tao;Lei Yalan;Li Jiandong;Fang Yanbin(Yuxi Power Supply Bureau of Yunnan Power Grid Company,Yuxi Yunnan,653100)

机构地区：[1]云南电网公司玉溪供电局,云南玉溪653100

出　　处：《电子测试》2021年第20期95-97,共3页Electronic Test

摘　　要：本文利用SIMULINK仿真平台搭建的三机九节点电力网络来研究了不同负荷模型在电力系统遭受不同扰动时对电压稳定性的影响,并在特定的扰动情况下研究了感应电动机负载增大、电压失稳时加入改善措施之后对电压稳定性的影响。通过对每种情况下的仿真波形进行对比分析后得出结论:负荷模型不同及负荷大小不同都会对电力系统的电压稳定性产生不同程度的影响;电力系统中的感应电动机负荷对系统的电压稳定性影响最大,且离遭受扰动的点越近,母线的电压稳定性越差;并联电容器是改善电压稳定性切实可行的措施。In this paper,the effect of different load models on voltage stability under different disturbance is studied by using the three-machine and nine-node electric network constructed by SIMULINK simulation platform.The influence of the load increase and voltage instability on the voltage stability of induction motor is studied under certain disturbance conditions.By comparing and analyzing the simulation waveforms in each case,it is concluded that different load models and different load sizes have different effects on the voltage stability of power system.The load of induction motor in power system has the greatest effect on the voltage stability of the system,and the closer to the point being disturbed,the worse is the voltage stability of busbar.Shunt capacitor is practical measures to improve voltage stability.

关 键 词：负荷特性 感应电动机 仿真分析 电压稳定性 改善措施 

分 类 号：TM712[电气工程—电力系统及自动化]