摘要
通过广西电能质量智能监测分析系统数据及实地测试数据,总结了广西高铁及普通电铁的三相电压不平衡情况:高铁投运前后沿线供电变电站PCC点三相电压不平衡均满足国标,投运后PCC点三相电压不平衡相比投运前上升,高铁供电母线的三相电压不平衡与普通电铁相比较小。文中分析了三相电压不平衡的危害,给出了抑制方法,结合振田牵线三相电压不平衡超标的问题,通过相间无功补偿调整三相电压不平衡方法进行了ETAP仿真验证,最后指出通过在相间加装电容器组可以有效降低三相电压不平衡。
This paper summarized the three-phase voltage unbalance of Guangxi Super Express and ordinaryelectrified railway by the Guangxi intelligent electric quality monitoring system？ data and the field-testing results：The three-phase voltage unbalance of PCC along the substations meets the national standard before and after SuperExpress being put into service. The PCC three-phase voltage unbalance rises after being put into service. The threephasevoltage unbalance of Super Express is smaller than ordinary electrified railway. Then,the harms of three-phasevoltage imbalance were analysed and the suppression methods were given. Combined with Zhentianqian＇s questionsthe method of adjusting three-phase voltage unbalance through reactive power compensation device was tested byETAP simulation. It is pointed out that the unbalance of the three-phase voltage can be effectively reduced byinstalling capacitors between different phases.
作者
黄志诚
楚红波
HUANG Zhicheng CHU Hongbo(Guangxi Water Resources ＆ Electric Power Group Co., Ltd., Nanning 530023 , China Electric Power Research Institute of Guangxi Power Grid Corporation, Nanning 530023, China)
出处
《电器与能效管理技术》
2017年第9期74-77,共4页
Electrical & Energy Management Technology
关键词
高铁
三相电压不平衡
电容器
ETAP
仿真
super express
three-phase voltage unbalance
capacitor
ETAP
simulation
