摘要
变电站二次等电位接地网用于变电站内监控、保护、测量、通信等二次设备及连接光缆、电缆的接地,是保证二次设备安全可靠运行的重要手段。现有的规程规范对于二次等电位系统的屏柜接地设置、室内等电位地网与主地网的连接方式、电缆沟屏蔽铜排的设置方面存在差异。归纳分析变电站二次系统干扰源及接地分类,探究二次等电位接地设置方式,提出一种变电站二次等电位接地系统设置原则,为今后变电站二次等电位接地系统的设计提供参考。
Substation secondary equipotential grounding network is used for substation monitoring,protection,measurement,communication and other secondary equipment and connection of optical cable,cable grounding.It is an important means to ensure the safe and reliable operation of secondary equipment.The existing regulations differ in the setting of screen cabinet grounding for secondary equipotential system,the connection mode between indoor equipotential grounding grid and main grounding grid,and the setting of cable trench shielding copper row.We summarized and analyzed the interference source and grounding classification of substation secondary system,probes into the setting mode of secondary equipotential grounding,and put forward a setting principle of substation secondary equipotential grounding system.The setting mode can provide reference for the design of the substation secondary equipotential grounding system in the future.
作者
郭宜果
魏鑫
王慧轩
GUO Yiguo;WEI Xin;WANG Huixuan(State Grid Shandong Electric Power Company Electric Power Economic&Technology Research Institute,Jinan 250021,China)
出处
《山东电力技术》
2020年第2期47-51,共5页
Shandong Electric Power
关键词
二次设备
电磁干扰
等电位接地网
设置原则
secondary equipment
EMI
equipotential grounding grid
setting principles
