变电站入地故障电流对共站数据中心通信电缆的电磁影响研究  

Study of electromagnetic effects of substation ground fault currents on communication cables of co-located data centers

作　　者：李永明[1] 刘岩 梁文辉 汪小莞 LI Yongming;LIU Yan;LIANG Wenhui;WANG Xiaowan(State Key Laboratory of Power Transmission Equipment&System Security and New Technology(Chongqing University),Chongqing 400044,China;State Grid Chongqing Electric Power Company Materials Branch,Chongqing 400044,China)

机构地区：[1]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆400044 [2]国网重庆市电力公司物资分公司,重庆400044

出　　处：《电气应用》2022年第11期47-54,I0006,共9页Electrotechnical Application

摘　　要：数据中心与变电站进行共站建设逐步成为解决数据中心占地及高耗能问题的一种有效方案。针对变电站故障时产生的地电位升高对数据中心的通信电缆造成影响的问题,建立了电磁数值计算仿真模型,分析了接地网在不同的连接方式下变电站与数据中心共站区域的地表电位、接触电压和跨步电压的分布情况。在此基础上,确定接地网互联的布置方式,研究故障电流引起的地电位升高对数据中心通信电缆的影响。最后通过计算发现增大接地网面积、改变土壤电阻率可以有效改善通信电缆中的转移电位差。The co-location construction of data centers and substations has gradually become an effective solution to solve the problems of data center occupancy and high energy consumption.To address the problem that the ground potential rise caused by substation faults affects the communication cables of data centers,an electromagnetic numerical calculation simulation model is established to analyze the distribution of ground potential,contact voltage and step voltage in the co-location area of substations and data centers under different connection methods of the grounding network.On this basis,the arrangement of the grounding network interconnection is determined and the effect of ground potential rise caused by fault current on the communication cables of the data center is studied.Finally,it is found that increasing the grounding network area and changing the soil resistivity can effectively improve the transfer potential difference in the communication cables through calculation.

关 键 词：变电站 数据中心 故障电流 接地网 通信电缆 

分 类 号：TM63[电气工程—电力系统及自动化] TP308[自动化与计算机技术—计算机系统结构]