| 基于阵列式磁传感器的电力设备接地网定位方法研究 |
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| 引用本文： | 辛明勇,徐长宝,田兵,刘仲,刘子轩,,鲁彩江,.基于阵列式磁传感器的电力设备接地网定位方法研究[J].陕西电力,2022,0(8):95-101. |
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| 作者姓名： | 辛明勇 徐长宝 田兵 刘仲 刘子轩 鲁彩江 |
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| 作者单位： | （1.贵州电网有限责任公司电力科学研究院，贵州贵阳 550002；2.南方电网数字电网研究院有限公司，广东广州 510000；3.西南交通大学机械工程学院，四川成都 610031） |
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| 摘 要： | 针对在电力设备接地网腐蚀情况诊断时，测量装置移动不便且难以精确定位埋设位置和深度的问题，提出一种基于阵列式各向异性磁阻（ AMR）传感器的接地导体定位方法。首先，利用电磁感应原理确定阵列传感器间距离最优值；然后，搭建实验装置验证传感器间距离计算值的合理性；最后，建立单根接地导体和口字形接地网拐点2种等效模型，利用深度反演公式得到接地导体在0.4 ~1 m探测深度范围内的深度计算值与实际测量值偏差小于0.096 m的结论。实验结果表明所提定位方法准确性与可行性较高，可应用于实际工程。
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| 关 键 词： | 电力设备接地网 深度检测 电磁感应 |
Power Equipment Grounding Grid Location Method Based on Array Magnetic Sensor |
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| XIN Mingyong,XU Changbao,TIAN Bing,LIU Zhong,LIU Zixuan,LU Caijiang.Power Equipment Grounding Grid Location Method Based on Array Magnetic Sensor[J].Shanxi Electric Power,2022,0(8):95-101. |
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| Authors: | XIN Mingyong XU Changbao TIAN Bing LIU Zhong LIU Zixuan LU Caijiang |
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| Affiliation: | （1. Guizhou Electric Power Research Institute， Guiyang 550005， China； 2. Southern Power Grid Digital Power Grid Research Institute Co. Ltd.，Guangzhou 510000，China；3. School of Mechanical Engineering， Southwest Jiaotong University，Chengdu 610031，China） |
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| Abstract: | In order to solve the problems of inconvenient movement of measuring device and the difficulties to locate the position and depth of buried grounding conductor in the diagnosis of grounding network corrosion of power equipment，grounding conductor location method based on array anisotropic magneto resistance （AMR） magnetic sensor is proposed. Firstly， the electromagnetic induction principle is used to determine the optimal distance between array sensors. Then，an experimental device is set up to verify the rationality of the calculated distance between sensors. Finally，two equivalent models of inflection point of single grounding conductor and mouth-shaped grounding net are established. Based on the depth inversion formula，it can be known that the deviation between the calculated depth and the actual depth of grounding conductor is less than 0.0964 m in the range of 0.4 ~1 m detection depth. Experimental results show that the proposed location method can be applied to engineering practice. |
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| Keywords: | power equipment grounding grid depth detection electromagnetic induction |
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