考虑主变电所资源共享的城市轨道交通供电系统无功补偿方案  

Reactive Power Compensation Scheme for Urban Rail Power Supply System Considering Main Substation Resource Sharing

作　　者：李立颖 周丹 林珊 邹大云 金海奇[2] 解凯[2] 戚贺 张戬 LI Liying;ZHOU Dan;LIN Shan;ZOU Dayun;JIN Haiqi;XIE Kai;QI He;ZHANG Jian(Guangzhou Metro Design&Research Institute Co.,Ltd.,510010,Guangzhou,China;NR Electric Co.,Ltd.,211102,Nanjing,China;School of Electrical Engineering,Southwest Jiaotong University,611756,Chengdu,China)

机构地区：[1]广州地铁设计研究院股份有限公司,广州510010 [2]南京南瑞继保电气有限公司,南京211102 [3]西南交通大学电气工程学院,成都611756

出　　处：《城市轨道交通研究》2024年第2期53-57,共5页Urban Mass Transit

摘　　要：[目的]当城市轨道交通供电系统的主变电所资源共享时,能够节省供电系统的投资成本。在此背景下,为使PCC(公共连接点)的功率因数达到标准,需要对不同阶段的主变电所资源共享无功补偿方案进行研究。[方法]以某城市地铁线路的供电系统为例,根据行车计划和供电系统结构,推算出PCC处在全日功率因数达标的情况下,主变电所资源共享前后的最小无功功率补偿量。提出考虑主变电所资源共享的无功补偿设置方案,以主变电所资源共享前后的最小无功功率补偿量满足补偿需求为基础,以SVG(静止无功发生器)容量最小为目标,确定SVG和电抗器或电容器的安装容量。[结果及结论]在案例线路的供电系统中,1#主变电所主变压器供电分区无功补偿装置的实际配置为:电抗器容量为6.0 Mvar;SVG容量为1.0 Mvar;2#主变压器供电分区无功补偿装置的配置为:电抗器容量为3.0 Mvar;SVG容量为0.5 Mvar。所提供电系统无功补偿方案将总计容量为9.0 Mvar的SVG装置替换成电抗器,在满足无功补偿需求的同时降低了投资成本。[Objective]The resource sharing among main substations in urban rail transit power supply system can lead to significant cost savings.In this context,it is essential to investigate reactive power compensation schemes for different phases of main substation resource sharing to ensure that the power factor at the PCC(point of common coupling)meets the standards.[Method]Taking the power supply system of a city's metro line as example,based on the train schedule and power supply system structure,the minimum reactive power compensation required at PCC before and after main substation resource sharing under daily power factor compliance is calculated.A reactive power compensation setting scheme considering main substation resource sharing is proposed,based on the minimum reactive power compensation that meets the compensation requirements before and after main substation resource sharing,with the goal to minimize SVG(static var generators)capacity,determining the installation capacity of SVG and reactor or capacitator.[Result&Conclusion]In the power supply system of the case study line,the actual configuration of the reactive power compensation devices for the 1#main substation main transformer power supply zone is as follows:reactor capacity is 6.0 Mvar,and SVG capacity is 1.0 Mvar.For the 2#main transformer power supply zone,the configuration is a reactor capacity of 3.0 Mvar and an SVG capacity of 0.5 Mvar.The proposed reactive power compensation scheme replaces a total capacity of 9.0 Mvar SVG devices with reactors,meeting the reactive power compensation requirements while reducing investment costs.

关 键 词：城市轨道交通 主变电所资源共享 无功补偿方案 

分 类 号：U231.8[交通运输工程—道路与铁道工程]