核电厂垫层接地的设计优化研究及推广应用  

Design Optimization Study and Promotion Application of Cushion Layer Grounding in Nuclear Power Plant

作　　者：李冬冬 濮恺 蔡伟充 LI Dongdong;PU Kai;CAI Weichong(Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd.,Shanghai 202233,China)

机构地区：[1]上海核工程研究设计院股份有限公司,上海202233

出　　处：《中国核电》2024年第6期857-865,共9页China Nuclear Power

摘　　要：防雷接地保护系统的功能是保障人身安全和设备安全,核电厂的垫层接地设计决定了全厂的接地电阻、安全的接触电压、跨步电压等。核电厂垫层的接地通常设计在基岩之上,接地的设计影响了整个核岛的开挖工程量、施工成本和工期。通过研究当前现有的垫层接地设计,探讨核电厂垫层接地的设计优化,并实际推广应用至在建的核电项目中,对整个核岛的开挖工程量、施工成本和工期有较为明显提升作用。The lightning protection and grounding protection system performs the functions of ensuring personal safety and providing equipment protection.The grounding design of the cushion layer in a nuclear power plant determines the grounding resistance,safe contact voltage,step voltage,etc.of the entire plant.The grounding of the cushion layer in nuclear power plants is usually designed above the bedrock,and the design of grounding affects the excavation quantity,construction cost,and construction period of the entire nuclear island.By studying the current existing cushion grounding design,exploring the design optimization of cushion grounding in nuclear power plants,and practical promotion and application to ongoing nuclear power projects,the excavation quantity,construction cost,and construction period of the entire nuclear island have been significantly improved.

关 键 词：核电厂 垫层 接地 降阻剂 

分 类 号：TM623[电气工程—电力系统及自动化]