基于PSS/E的短路电流衰减影响因素分析  

Analysis of influencing factors on short-circuit decay base on PSS/E

作　　者：靳希[1] 段开元[1] 张文青[1] 

机构地区：[1]上海电力学院电力与自动化工程学院,上海200090

出　　处：《电力科学与技术学报》2010年第3期61-65,共5页Journal of Electric Power Science And Technology

基　　金：国家自然科学基金(Z200965)

摘　　要：针对大电网短路电流超标日趋严重、中国现行短路电流计算方法偏于保守的情况,在PSS/E机电暂态仿真环境下研究发电机?负荷和励磁系统模型对短路电流衰减的影响.通过研究发现:在动态仿真过程中,不同的元件模型对短路电流衰减有较大的影响,可作为研究与评估电网实际短路电流衰减的参考.The short-circuit current of some large power grid is much higher than the required limit level, and the current short circuit calculation is slightly conservative. This paper analyzes the generator model, load model and excitation system model which influence the short-circuit current＇s decay by PSS/E electromechanical transient simulation. The research shows that the different element models have a great influence on the short-circuit current＇s decay in the process of dynamic simulation. That could be used as reference on study and assessment of the actual system short-circuit decay.

关 键 词：短路电流衰减 发电机模型 负荷模型 励磁模型 

分 类 号：TM74[电气工程—电力系统及自动化]