摘要
城市轨道交通供电系统为提高功率因数,多采用在主变电所35kV母线安装SVG装置的无功集中补偿方式。以成都地铁某主变电所实测数据为依据,分析SVG装置在投运和切除2种不同工况下的主变电所2段进线PCC处的无功功率及功率因数和电压谐波;无功补偿装置运行前后2段进线PCC处全日功率因数分别由0.710和0.445提高至0.998和0.967;主变电所进线3,5和11次电压谐波降低;以全日功率因数0.95为标准,评估主变电所无功补偿装置的安装容量,35 kV1段母线无功补偿装置总容量裕度较大。
The urban rail transit power supply system usually adopts the centralized reactive compensation method of installing the SVG device in the main substation35kV bus to improve the power factor.This paper was based on the measured data of the main transformer substation in Chengdu metro,and analyses harmonics voltage,reactive power and power factor at PCCs of the main substation under two different scenarios of the SVG device that has been put into operation and removal conditions.The SVG compensation characteristics were evaluated.When the reactive power compensation devices are out of service,full-day power factors at PCCs are0.445and0.710.After operating SVG devices,full day power factors are improved to0.998and0.967respectively.The3,5and11harmonics voltages of the main transformer substation are reduced.Using full-day power factor of0.95as rule,the installed capacity of main substation reactive power compensation device are evaluated,which indicated that reactive power compensation device of35kV I segment has a larger total capacity margin.
作者
王沛沛
刘炜
廖钧
许嘉轩
马俊杰
代一平
WANG Peipei;LIU Wei;LIAO Jun;XU Jiaxuan;MA Junjie;DAI Yiping(School of Electric Engineering, Southwest Jiaotong University, Chengdu 610031, China;Chengdu Metro Operation Co., Ltd., Chengdu 610031, China)
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2017年第5期1063-1069,共7页
Journal of Railway Science and Engineering
基金
中国铁路总公司科技研究开发计划资助项目(2015J005-A)
关键词
静止型动态无功补偿装置
无功补偿
功率因数
安装容量
SVG (Static Var Generator)
reactive power compensation
power fact
installed capacity
