国内三代核电厂中压系统接地方式优化研究  

Research on Grounding Mode Optimization of Medium Voltage System in Domestic Third Generation Nuclear Power Plants

作　　者：纪秀艳 刘爱芬 张瑞萍 钟丽波 魏巍 JI Xiuyan;LIU Aifen;ZHANG Ruiping;ZHONG Libo;WEI Wei(Hualong International Nuclear Power Technology Co.,Ltd., Beijing 100036, China;State Grid Shenyang Power Supply Company,Shenyang,Liaoning 110003,China)

机构地区：[1]华龙国际核电技术有限公司,北京100036 [2]国网沈阳供电公司,辽宁沈阳110003

出　　处：《东北电力技术》2021年第11期43-46,共4页Northeast Electric Power Technology

摘　　要：通过总结国内典型三代核电厂中压系统接地方式,查阅核电厂中压系统中性点接地方式主要依据的标准规范及相关文献,对各种接地方式发生单相接地故障时对中压系统产生的影响进行分析,结合工程实践,对国内三代核电厂中压系统接地方式进行对比分析。中压系统接地方式除了按照电容电流计算结果选择外,还要考虑核电厂本身对供电可靠性及经济性的要求,综合各种接地方式的优缺点,提出了对国内三代核电厂中压系统接地方式的几点优化建议。Through summarizing the typical medium-voltage system grounding mode of the third generation nuclear power plant in China,it consults the nuclear power plant medium voltage system neutral grounding mode based on the main standard specifications and related literature.The influence of single phase grounding fault on medium voltage system is analyzed.Combined with engineering practice,the earthing methods of medium voltage system in three generation nuclear power plants in China are compared and analyzed.The grounding method of medium voltage system should not only be selected according to the calculation results of capacitance current,but also considers the reliability and economy power supply requirements of nuclear power plant.Synthesizing the advantages and disadvantages of various grounding modes,it puts forward some suggestions for optimizing the grounding modes of medium-voltage system in third-generation nuclear power plants in China.

关 键 词：中压系统 不接地 低电阻接地 消弧线圈接地 

分 类 号：TM623[电气工程—电力系统及自动化]