上海轨道交通9号线运能增加对牵引供电质量影响研究  

Study on Impact of Capacity Increase on Traction Power Supply Quality in Shanghai Metro Line 9

作　　者：金逸亭 JIN Yiting(Power Supply Branch of Shanghai Metro Maintenance Support Co.,Ltd.,200235,Shanghai,China)

机构地区：[1]上海地铁维护保障有限公司供电分公司,上海200235

出　　处：《城市轨道交通研究》2024年第S01期42-46,共5页Urban Mass Transit

摘　　要：[目的]结合上海轨道交通9号线增能改造项目,寻找简易运能估算方法,研究运能增加对供电质量的影响。[方法]电压是电能质量指标之一,查阅相关文献发现,牵引网最大电压损失、牵引网平均电压损失与牵引变电站站间距及区间列车数量(运营能力)呈正相关性。从文献中收集相关电气参数、设备数量及相应单价,并总结得到区间开行列车数量估算公式。为进一步比较设计方提出的供电系统改造方案,从技术和资金两方面进行分析。在技术方面,建立了三站两区间电力计算等效模型,结合数据及公式进行分析比较;在资金方面,基于技术方面数据对工程金额进行估算。最终进行方案比选。[结果及结论]运能增加对电能质量的影响是电压降低,基于数据分析得出,牵引网最大电压损失更能直观反映牵引变电站站间距和运能的关系。增加泗泾牵引变电站的改造方案能够同时满足技术和资金两方面需求。基于模型和公式,可以估算线路的运能上限以及牵引供电系统非正常工况下区间开行列车数量。[Objective]In conjunction with the capacity increase project of Shanghai Metro Line 9,it is aimed to find a simple capacity estimation method and investigate the impact of capacity increase on power supply quality.[Method]Voltage is one of the power quality indicators.Through literature review,it is found that the maximum voltage loss and average voltage loss of the traction network are positively correlated with the traction substation spacing and the number of interval trains(operating capacity).Relevant electrical parameters,equipment quantities,and corresponding unit prices are collected from the literature,and the estimation formula of interval train number is summarized.To further compare the proposed power supply system retrofit schemes,an analysis is conducted from both technical and financial aspects.On the technical side,a three-station,two-interval power calculation equivalent model is established,and data and formulas are used for analysis and comparison.On the financial side,based on technical data,the project cost is estimated.Finally,a scheme comparison is conducted.[Result&Conclusion]The increase in capacity has an impact on power quality by reducing voltage.Based on data analysis,it is found that the maximum voltage loss of the traction network more intuitively reflects the relationship between traction substation spacing and capacity.The proposed retrofit scheme for Sijing traction substation can simultaneously meet the requirements of both technology and finance.Based on the model and formulas,the maximum capacity of the line and the number of trains operating in the interval under abnormal conditions of the traction power supply system can be estimated.

关 键 词：上海轨道交通 供电系统 牵引变电站 供电质量 

分 类 号：U223.52[交通运输工程—道路与铁道工程]