基于PSASP的牵引负荷用户自定义建模

Modeling of Traction Power Supply System Based on the User-defined Model of PSASP

随着电气化铁路在现代铁路运输中的广泛应用,牵引负荷在电力负荷中占的比重越来越高,牵引负荷的随机波动性、非线性以及不对称性等特点决定了此种负荷对电力系统的安全稳定与经济运行有不可忽视的影响,因此迫切需要对牵引负荷特性进行研究。本文利用电力系统分析综合程序(Power System Analysis SoftwarePackage,PSASP)的用户自定义模型功能(User Defined Model,UDM),建立了牵引负荷用户自定义模型,实现了牵引负荷实测模型与PSASP的连接,编辑独立动特性仿真程序验证了接口的正确性,分析比较了牵引负荷模型与传统负荷模型动态响应特性的差别。

With the rapid development of electrical railway,the proportion of traction loads in the power system is expanding.As the characteristics of fluctuation,nonlinearity and asymmetry have arose some hazardous effects to security and stability of power system,the research on the synthesis load characteristics of traction power supply system is necessary.Using the user-defined model（UDM） provided by the power system analysis software package（PSASP）,this paper constructs traction power supply system model.The correctness of interface between user-defined model and PSASP is verified by independent dynamic characteristic program.The different dynamic response characteristics of the traction load model and traditional load model are analyzed.