基于垂直布线的新型电力系统接地网接地阻抗测量方法

冉帅; 肖江滔; 何华林; 夏建华; 张兆闯

冉帅,肖江滔,何华林,夏建华,张兆闯.基于垂直布线的新型电力系统接地网接地阻抗测量方法[J].电测与仪表,2026,63(8):161-169.
RAN Shuai,XIAO Jiangtao,HE Hualin,XIA Jianhua,ZHANG zhaochuang.Research on grounding impedance measurement method of grounding grid for new-type power system based on vertical wiring[J].Electrical Measurement & Instrumentation,2026,63(8):161-169.

基于垂直布线的新型电力系统接地网接地阻抗测量方法

Research on grounding impedance measurement method of grounding grid for new-type power system based on vertical wiring

DOI：10.19753 / j.issn1001-1390.2026.08.017

中文关键词: 接地网接地阻抗垂直布线水平布线

英文关键词:grounding grid, grounding impedance, vertical wiring, horizontal wiring

基金项目:中国长江电力股份有限公司科研项目(Z412302025)

作者中文名	作者英文名	单位
冉帅	RAN Shuai	中国长江电力股份有限公司溪洛渡水力发电厂
肖江滔	XIAO Jiangtao	中国长江电力股份有限公司溪洛渡水力发电厂
何华林	HE Hualin	成都诺嘉伟业科技有限公司
夏建华	XIA Jianhua	中国长江电力股份有限公司溪洛渡水力发电厂
张兆闯	ZHANG zhaochuang	中国长江电力股份有限公司溪洛渡水力发电厂

摘要点击次数: 8

中文摘要:

针对传统水平放线法在变电站等接地网接地阻抗测量时受限于布线路径等问题,文中提出了一种基于垂直深井布线来测量接地网接地阻抗的新方法,首先,论述了基于零电位补偿法的垂直深井布线接地网接地阻抗测量原理及利用接地网电位变化差值作为垂直深井布线时零电位补偿值以确定电位极布置位置的方法。然后,通过CDEGS仿真软件对所述方法的技术原理可行性、电极布置方案等进行了计算分析。最后,通过某35 kV的实际变电站工程案例测试了所述方法的的有效性。仿真及实际测量结果表明,所述方法中电流极布置得越深,则电位平坦区间越大,接地阻抗测量准确度越高；测试深井的位置放在接地网边缘略优于放在接地网中部；实际变电站接地阻抗测量中所述方法与常规水平测量法的偏差约为5.86%,与仿真计算值的偏差约为5.14%,均在工程可接受的误差范围,表明所述方法能够有效应用于实际工程中接地网接地阻抗的测量。

英文摘要:

Considering the limitations of conventional horizontal wiring method in grounding impedance measurement for substations due to wiring path issues, a new method based on vertical deep well wiring is proposed in this paper. First, the principle of measuring the grounding impedance of grounding grids in vertical deep well wiring based on zero potential compensation method is discussed, and the method of using the difference in grounding grid potential changes as the zero potential compensation value to determine the position of potential poles in vertical deep well wiring is presented. Then, the technical feasibility and electrode arrangement scheme of the method were calculated and analyzed using CDEGS simulation software. Finally, the effectiveness of the method was tested through an actual 35 kV substation engineering case. Simulation and actual measurement results show that the deeper the current pole is arranged, the larger the potential flatness range and the higher the accuracy of grounding impedance measurement. Placing the well at the edge of the grounding grid is slightly better than placing it in the middle. The deviation between the method described in the actual substation grounding impedance measurement and the conventional horizontal wiring method is about 5.86%, and the deviation from the simulated calculation value is about 5.14%, both of which are within the acceptable error range of engineering. This indicates that the proposed method can be effectively applied to the measurement of grounding impedance of grounding grids in practical engineering.

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