Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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基于CDEGS软件的变电站接地主网网孔加密法研究

来源:电工电气发布时间:2018-08-16 10:16 浏览次数:557
基于CDEGS软件的变电站接地主网网孔加密法研究
 
耿梦儒1,葛强2,王品2,王成2,王娜2
(1 中电新源智能电网科技有限公司,江苏 南京 211113;2 扬州大学 水利与能源动力工程学院,江苏 扬州 225127)
 
    摘 要:变电站接地网的建设因受多种因素影响,是电力建设中的难题。基于CDEGS软件分析了接地网面积、水平接地极总长度等因素对接地网参数的影响,对当前主流的等间距及不等间距布置方案的优缺点进行了对比,结合工程实际因素与规程规范要求,提出网孔加密方法,并对其进行了仿真分析及工程实例应用。结果表明:网孔加密法取得了良好的效果,在工程运用中达到了改善接地主网参数性能的目标。
    关键词:接地主网;网孔加密法;CDEGS软件;接地电阻;接触电压;跨步电压
    中图分类号:TM862     文献标识码:A     文章编号:1007-3175(2018)08-0040-06
 
Research on Mesh Density Method of Main Substation Grounding Grid Based on CDEGS Software
 
GENG Meng-ru1, GE Qiang2, WANG Pin2, WANG Cheng2, WANG Na2
(1 China Power New Energy Smart Grid Technology Co., Ltd., Nanjing 211113 , China;
2 School of Hydraulic Energy and Power Engineering, Yangzhou University, Yangzhou 225127, China)
 
Abstract: The construction of transformer substation grounding grid is a problem in the power construction because of the multifactor influences on the construction. Based on CDEGS software, this paper analyzed the grounding grid area and level grounding electrode total length etc factors’ impact on grounding grid parameters and carried out the comparison for the relative merits between equal and unequal divisions layout plan of current mainstream. Combined the engineering practice factors with the regulation code requirements, this paper proposed the mesh density method and carried out simulated analysis with the engineering project applied. The results show that the mesh density method obtains good results, which realizes the object of parameter performance of main grounding grid in engineering application.
Key words: main grounding grid; mesh density method; CDEGS software; grounding resistance; touch voltages; step voltage
 
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