CDEGS在实验室接地网设计中的应用  

Application of CDEGS in Laboratory Grounding Grid Design

作　　者：姜辉[1] 张雅妮 刘娟[1] 张长秀 刘璇[1] 高剑[1] Jiang Hui;Zhang Yani;Liu Juan;Zhang Changxiu;Liu Xuan;Gao Jian(SINOPEC Research Institute of Safety Engineering,Shandong,Qingdao,266071;Qingdao Shuangrui Marine Environmental Engineering Co.,Ltd.,Shandong,Qingdao,266101)

机构地区：[1]中国石化青岛安全工程研究院,山东青岛266071 [2]青岛双瑞海洋环境工程股份有限公司,山东青岛266101

出　　处：《安全、健康和环境》2020年第12期39-42,共4页Safety Health & Environment

基　　金：国家重点研发计划项目(2016YFC0801201);典型危险化学品储存设施安全预警与防护一体化关键技术研究与应用示范,国家重点研发计划项目(2018YFF01010804);雷电静电监测与安全防护系统开发及应用,国家自然科学基金(51577117);多重雷电流冲击下金属与合金材料损伤机理和损伤特性研究。

摘　　要：基于理论计算和CDEGS软件仿真,对改善地网电位分布的措施进行探讨,对放射型接地极对方形地网的降阻效果进行分析研究。研究结果表明,水平网状地网结构可有效减小跨步电压,使地电位分布更为均匀,按照指数压缩的方式进行排列的网状结构可进一步提高这种效能。放射型接地极数量越多,长度越长,其降阻效果越明显。当所用放射型接地极总长度一定时,其降阻效果相差不大,但仍有细微差别:放射型接地极根数越少,放射型接地极根数越少,降阻效果越理想。最终在运用CDEGS软件仿真的基础上,对在建高压实验室的地网进行了优化设计。Based on theoretical calculation and CDEGS software simulation,the measures to improve the potential distribution of grounding grid were discussed.The resistance reduction performance of radial grounding electrode on square grounding grid was analyzed and studied.The results showed that the horizontal grid structure could effectively reduce the step voltage and make the distribution of ground potential more uniform.The network structure arranged in accordance with the exponential compression mode can further improve this efficiency.The effect of resistance reduction was more obvious with the increase of the number and length of radial grounding electrodes.When the total length of the radial grounding electrode was fixed,the effect of resistance reduction was similar,but there are still slight differences:the less the number of radial grounding electrode,the less the number of radial grounding electrode,the better the resistance reduction effect.Finally,on the basis of CDEGS software simulation,the optimization design of the ground grid of the high-voltage laboratory under construction was carried out.

关 键 词：高电压实验室 接地电阻 跨步电压 放射型接地极 接地网 

分 类 号：TM862[电气工程—高电压与绝缘技术]