电动机模型结构及参数对暂态稳定仿真的影响  

Effect of induction motor model structure and parameters on simulating computation of electric power system transient stability

作　　者：陈凤[1] 李欣然[1] 陈辉华[2] 唐外文[2] 刘艳阳[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082 [2]湖南电力调度通信中心,湖南长沙410007

出　　处：《电力自动化设备》2004年第8期29-33,共5页Electric Power Automation Equipment

基　　金：教育部高等学校骨干教师资助计划资助(教技司[2002]65号);湖南省自然科学基金项目资助(99JJY0095);湖南省教育厅重点项目资助(湘教通[2001]197号)

摘　　要：针对目前负荷模型应用的薄弱环节,就三阶感应电动机模型及一阶机械暂态感应电动机模型和恒定阻抗模型对暂态稳定仿真结果的影响进行系统研究。首先,实现一阶机械暂态感应电动机模型与电力系统分析综合程序PSASP(PowerSystemAnalysisSoftwarePackage)的接口。然后,以PSASP为仿真手段,以湖南电网和WSCC-9节点系统为研究对象,仿真研究感应电动机模型参数及综合负荷模型结构对电力系统暂态稳定性的影响。研究表明,感应电动机定子漏电抗增大将使系统暂态稳定裕度显著减小,使用三阶感应电动机模型仿真所得系统的暂态稳定能力明显低于一阶模型和恒定阻抗模型的相应结果。最后的结论对电力系统负荷建模和模型应用具有较大的理论意义和工程应用价值。As to the application of load model,the affect of the third-order mechanical-electrical transient model,the first order mechanical transient model and the constant impedance model on the simulating computation of power system transient stability is studied. The junction of the first -order mechanical transient model of induction motor and PSASP(Power System Analysis Software Package) is realized first. Then the effect of model's parameters and structure on power system transient stability is simulated on WSCC-9-bus system and Hunan power system using PSASP. The simulating computation shows that the increase of stator leakage reactance made the system transient stability margin decreasing obviously. The transient stability computed with the third -order model is obviously lower than that with the first-order model and constant impedance model. This project is supported by Education Ministry(65),Natural Science Foundation of Hunan(99JJY0095) and Hunan Education Department(197).

关 键 词：电力系统 暂态稳定 负荷模型 感应电动机 PSASP 自定义模型 

分 类 号：TM343[电气工程—电机] TM712