关于地铁变电所接地网设置问题的思考

由于地铁供电系统供电方式的特殊性,其接地系统的方案一直存在争议。结合国内规范及国内轨道交通项目的常规做法,从接地网的设置、低压侧的接地、接地电阻值的选取、直流系统的接地等方面进行分析,旨在为以后的地铁接地系统的设计提供借鉴。

Reflection on Subway Substation Grounding Grid

Due to the particular features of subway power supply mode,the scheme of grounding system has been controversial.In this paper,combined with the conventional practice of norms and rail transit projects in China,the subway grounding setting,low side grounding,transformer grounding resistance selection and DC system grounding are analyzed,in order to provide some references on the subway grounding system design for future projects.