500 kV变电站改扩建工程的设计研究

Research on Transformation and Expansion Project of 500 kV Substation

结合御道口500 kV变电站改扩建工程实例,提出电气主接线完善方案,并重新核算现有接地电阻、设备参数、导体(汇流母线、导线)及安全距离等是否满足规程要求,文中提出的方案可供同类型变电站的扩建工程借鉴。

For 500 kV substation expansion projects,some designers mistakenly think demolition of outdated equipments and installations of new equipments are sufficient.In fact this method leads to shortcomings both during and after the expansion project process.This article uses the Yudaokou 500 kV substation expansion project as a case study,and proposes that in the design stage of such projects,the main electric connection to be improved and perfected,the the existing parameters such as grounding resistance,device parameters,conductors(busbar,conductor)and safety distance etc,needs to be re-calculated so that these parameters can meet the code requirement.