城际铁路枢纽合建变电所优化设计研究与实施

Research and Implementation on Optimization Design of Substations Co-built by Intercity Railway Hubs

研究目的:城际铁路枢纽车站是多条线路客流的交汇处,枢纽变电所位于枢纽车站附近,联系多个电源,出线回路较多,停电将造成较大影响。枢纽变电所对城际铁路供电的稳定性和可靠性起到重要作用。本文结合广佛环线屏山变电所的特点,阐述屏山变电所的主要设计方案,对城际铁路枢纽合建变电所的优化设计进行分析和讨论。研究结论:(1)综合考虑变电所外部电网的接入条件,进行多方案比选,选择最优的外部电源接入方案;(2)枢纽变电所通常采用牵引变电所、电力变电所合建的方式,以减少外部电源投资;(3)枢纽合建变电所一般采用全室内布置形式,以节约用地及减少变电所对周围地块商业价值的影响;(4)本研究成果可应用于用地紧张、外部条件复杂的城际铁路枢纽变电所的设计与施工。

Research purposes:The intercity railway hub station is the interchange of passenger flow of multiple lines,and the hub substation is located near the hub station,which is connected with multiple power sources,and there are many outgoing circuits,which will cause a great impact on power failure.The hub substation plays an important role in the stability and reliability of intercity railway power supply.Based on the characteristics of Pingshan Substation of Guangzhou-Foshan Ring Line,this paper expounds the main design scheme of Pingshan Substation,and analyzes and discusses the optimal design of the substation jointly built by intercity railway hubs.Research conclusions:(1)Considering the access conditions of the external power grid of the substation comprehensively,multiple schemes were compared and the optimal external power supply access scheme was selected.(2)The hub substation is usually built by combining traction substation and power substation to reduce external power investment.(3)The substation jointly built by the hub generally adopts the form of full indoor layout to save land and minimize the influence of the substation on the commercial value of the surrounding plots.(4)The research results can be applied to the design and construction of the intercity railway hub substation limited land and complex external conditions.