地铁降压变电系统构成和施工调试

Composition and Construction Commissioning of the Subway Step-down Substation System

本文以天津市6号线一期工程线路为研究对象,在分析地铁降压变电系统构成的基础上,研究各站变压器负载率和降压变电系统电力设备的耗电量,并对各降压变电系统电力设备出现的谐波电流问题进行施工调试,结果表明40座地铁车站高峰期的变压器负载率可提供充裕的供电,环控设备、冷源设备、车站照明设备的谐波电流95%概率值曲线具有明显的区别。

In order to facilitate the construction and commissioning of the subway step-down substation system,taking Tianjin Line 6 Phase I Project as the research object,based on the analysis of the composition of the subway step-down substation system,the transformer load rate and the power consumption of the power equipments of the step-down substation system at each station are studied,and the harmonic current problems of each power equipment at step-down substation system are debugged.The results show that the transformer load rate in peak period of 40 subway stations can provide sufficient power supply,and the 95% probability value curve of harmonic current of environmental control equipments,cold source equipments and station lighting equipments has obvious differences.