牵引变电站无功与负序分量的综合补偿  

Comprehensive Compensation of Reactive Power and Negative Sequence Components for Traction Substations

作　　者：张丽艳[1] 李群湛[1] 徐英雷[1] 

机构地区：[1]西南交通大学电气工程学院,四川省成都市610031

出　　处：《电网技术》2008年第21期17-21,共5页Power System Technology

基　　金："十一五"国家科技支撑计划重点项目(2007BAA12B05);国家电网公司科技项目(SGKJ[2007]102)~~

摘　　要：并联补偿对牵引负荷正序无功功率的补偿只与总的补偿容量有关,与变压器的接线方式及补偿容量在端口的分布方式无关;而对负序功率的补偿,不仅与牵引负荷的大小和功率因数有关,还与其在次边端口的分布方式及并联补偿的性质有关。针对并联补偿对牵引负荷的补偿特点,文中提出2种牵引变电站无功与负序补偿的优化配置方案,并给出2种补偿方案下各个补偿端口补偿容量的通用表达式。以某牵引变电站的实测数据为例,验证了2种补偿方案的可行性。The positive sequence reactive power compensation of traction load is only related to total compensating capacity of shunt compensator, and not related to the connection mode of transformers and the distribution mode of compensating capacity in every port; however, the compensation of negative sequence power is not only related to the power and power factor of traction load, but also to the distribution of compensating capacity in ports of transformer secondary side and the features of shunt compensation. According to the compensating characteristic of traction load by shunt compensation, two kinds of optimal configuration schemes for reactive power and negative sequence compensation are proposed, and the general expression for compensating capacity of each compensating port under the two compensation schemes is given. Taking the measured data of a certain traction substation the two proposed compensation for example, the feasibility of schemes is verified.

关 键 词：牵引变电站 无功补偿 负序电流 综合补偿 

分 类 号：TM922.42[电气工程—电力电子与电力传动]