基于CDEGS軟件的變電站接地主網(wǎng)網(wǎng)孔加密法研究
耿夢儒1,葛強(qiáng)2,王品2,王成2,王娜2
(1 中電新源智能電網(wǎng)科技有限公司,江蘇 南京 211113;2 揚(yáng)州大學(xué) 水利與能源動力工程學(xué)院,江蘇 揚(yáng)州 225127)
摘 要:變電站接地網(wǎng)的建設(shè)因受多種因素影響,是電力建設(shè)中的難題?;贑DEGS軟件分析了接地網(wǎng)面積、水平接地極總長度等因素對接地網(wǎng)參數(shù)的影響,對當(dāng)前主流的等間距及不等間距布置方案的優(yōu)缺點(diǎn)進(jìn)行了對比,結(jié)合工程實(shí)際因素與規(guī)程規(guī)范要求,提出網(wǎng)孔加密方法,并對其進(jìn)行了仿真分析及工程實(shí)例應(yīng)用。結(jié)果表明:網(wǎng)孔加密法取得了良好的效果,在工程運(yùn)用中達(dá)到了改善接地主網(wǎng)參數(shù)性能的目標(biāo)。
關(guān)鍵詞:接地主網(wǎng);網(wǎng)孔加密法;CDEGS軟件;接地電阻;接觸電壓;跨步電壓
中圖分類號:TM862 文獻(xiàn)標(biāo)識碼:A 文章編號: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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