随机时滞电力系统稳定性分析  

Analysis of Stability of Stochastic Time Delay Power Systems

作　　者：厉文秀 

机构地区：[1]河海大学能源与电气学院,江苏南京210098

出　　处：《电网与清洁能源》2015年第3期29-34,共6页Power System and Clean Energy

基　　金：国家重点基础研究发展计划项目(973计划)~~

摘　　要：以励磁系统输入信号延时作为时滞环节,并通过引入负荷扰动项,建立单机无穷大随机时滞系统的数学模型;仿真获得随机时滞电力系统的受扰轨迹,分析不同时滞、不同扰动强度下随机时滞电力系统的稳定性;负荷模型分别采用恒阻抗、恒功率、恒电流模型,分析比较采用不同负荷模型对系统稳定性的影响,分析表明3种负荷模型所能承受的时滞上限能力从大到小依次为:恒阻抗模型、恒电流模型、恒功率模型。In this paper,a model of stochastic system with time delays is built,and the simulation under different excitation intensities and different time delays is conducted. The influence on the stability of the system is analyzed with three kinds of load models: constant impedance mode,constant current model and constant power model. The results show that the order of the capacity of these three kinds of models to tolerate the upper time delay from large to small is:constant impedance mode,constant current model and constant power model.

关 键 词：时滞随机电力系统 EM方法 负荷随机扰动 负荷模型 

分 类 号：TM712[电气工程—电力系统及自动化]