三相变压器模型分析及其对配电潮流的影响  

Comparison of Different Transformer Models and Their Influences on Power Flow of Three-Phase Distribution System

作　　者：高亚静[1] 苗宏佳 吴文传[2] 巨云涛[2] 李飞[3] 

机构地区：[1]新能源电力系统国家重点实验室(华北电力大学),河北保定071003 [2]电力系统及发电设备控制和仿真国家重点实验室(清华大学),北京100084 [3]贵州电网公司,贵州贵阳550002

出　　处：《中国电力》2014年第6期49-54,共6页Electric Power

基　　金：国家科技支撑计划资助项目(2013BAA01B01)~~

摘　　要：建立详细的三相变压器模型对配电网分析至关重要。在所建立的变压器三相模型基础上,对比分析了相间磁耦合和励磁支路对模型的影响,讨论了零序参数和励磁支路参数的计算方法,并采用4节点配电网测试系统,详细分析了相间磁耦合、励磁支路对配电网三相潮流计算的影响。算例分析表明,在变压器模型中是否考虑相间磁耦合对潮流计算结果的影响较大,而且励磁支路产生的损耗不应忽略。The establishment of the detailed three-phase transformer model is critical to distribution network analysis. Based on the established model, the interphase magnetic coupling and magnetizing branches influence on the transformer model are analyzed, and estimations of zero-sequence parameters and excitation branch parameters are discussed. Then, based on the IEEE 4-bus distribution test system, the detailed analysis of the power flow calculation is given, which includes the influences of the inter-phase magnetic coupling and magnetizing branches. The results of the test cases show that the interphase magnetic coupling has great impact on the results of three-phase power flow and the excitation loss should not be neglected.

关 键 词：配电系统 变压器模型 励磁支路 潮流计算 

分 类 号：TM711[电气工程—电力系统及自动化]