电气化铁路三相电压不平衡分析算法研究  

Study on the Algorithm of Electrified Railway Three-Phase Voltage Unbalance

作　　者：张振安[1] 李文臣[2] 王洋[1] 安宁[2] 张晓东[1] 

机构地区：[1]河南电力试验研究院,河南郑州450052 [2]中国电力科学研究院,北京100192

出　　处：《电网与清洁能源》2012年第5期14-18,共5页Power System and Clean Energy

摘　　要：通过对牵引供电系统结构的分析,推导了三相-两相系统变换方法,将牵引供电系统的两相参数转换为三相系统参数,使牵引供电系统与三相电力系统在拓扑结构上统一起来,从而可以分析牵引负荷引起的电网三相电压不平衡。该算法能够在计算中考虑牵引变压器自身阻抗的影响。使用PSCAD软件与本算法进行了验证,证明了本算法的正确性。Through analysis of the structure of the traction power supply system, this paper derives the method of transformation from three-phase to two-phase, by which the two-phase parameters can be transformed into three-phase ones, so that the traction power supply system and the three- phase power system are unified in topology, and therefore analysis of the three-phase voltage unbalance of power grid caused by traction load can be facilitated. The impedance of the traction transformer can be considered in the algorithm. The algorithm has been validated by using PSCAD software with its correctness proved.

关 键 词：电气化铁路 三相电压不平衡 负序电流 牵引变压器 

分 类 号：TM614[电气工程—电力系统及自动化]