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Development of high resolution magnetic field measurements for switching arc diagnosis of low-voltage switchgear

机译:高分辨率磁场测量技术在低压开关柜开关电弧诊断中的应用

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摘要

A method of switching arc diagnosis by means of magnetic field measurement and iterative determination of current paths is presented. First results, show the feasibility of the proposed method. By measuring the magnetic field outside of the switching device with a high spatial and high temporal resolution magnetic sensor array, information is obtained on switching current behavior. A purpose built magnetic field sensor array is developed. Information on the arc and contact movement during switching is retrieved from magnetic field measurement by iterative 3D FEM field calculation.
机译:提出了一种借助磁场测量和电流路径迭代确定的电弧诊断方法。初步结果表明了该方法的可行性。通过使用高空间和高时间分辨率的磁传感器阵列测量开关设备外部的磁场,可以获得有关开关电流行为的信息。开发了专用磁场传感器阵列。通过迭代3D FEM场计算从磁场测量中获取有关开关期间电弧和触点运动的信息。

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