电气化铁路牵引负荷负序源模型研究  

Study on Negative Source Model of Electrified Railway Traction Load

作　　者：王正纲[1] 李宁[1] 孙谦[2] 胡航帆[3] 杨胜杰[2] 

机构地区：[1]湖南省电力公司调度通信局,湖南长沙410007 [2]湖南大学电气与信息工程学院,湖南长沙410082 [3]哈尔滨电业局,黑龙江哈尔滨150001

出　　处：《华中电力》2011年第3期46-50,53,共6页Central China Electric Power

摘　　要：为了研究电气化铁路牵引负荷所产生负序对公用电网的影响,在Ss-8型电力机车数字仿真的基础上,提出了一种描述电气化铁路牵引负荷负序特性的新型简化模型。用负序电流源描述牵引负荷的负序特性,负序电流的实部和虚部被表达为基波正序电压、电流幅值及其相角差的函数。通过Matlab平台获得仿真数据样本,利用最小二乘准则进行参数辨识。WSCC-9系统的负序潮流仿真检验表明,模型具有足够的描述精度,适合于工程仿真应用。To study the impact of negative sequence generated by the electrified railway traction load on the public power grid,based on Ss-8 electric locomotive digital simulation,a new simplified negative source model is proposed.This model uses the negative current source to describe the negative characteristics of electrified railway traction load.In this model,the real and imaginary parts of the negative currents are expressed by functions of fundamental wave positive sequence voltage,current amplitude and phase angle difference.Get the data sample by Matlab simulation platform,and the parameter of the model can be identified by least square rule.WSCC-9 system negative flow simulation test proved this model has a sufficient description accuracy and is suitable for engineering simulation application.

关 键 词：电力系统 电铁牵引负荷 负荷建模 负序电流源 负序潮流 

分 类 号：TM714[电气工程—电力系统及自动化]