Development and application of a portable 3-axis transient magnetic field measuring system based on AMR sensor

2013 IEEE International Conference on Smart Instrumentation, Measurement and Applications (ICSIMA) Pub Date : 2013-11-01 DOI:10.1109/ICSIMA.2013.6717914

Xiaohua Wang, Qi Huang, Youliang Lu, Mo Du

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引用次数: 5

Abstract

With the development of smart substations, much attention has been focused on the transient magnetic field (TMF) generated during switching operation in substations. In order to study the TMF, a portable integrated system based on Anisotropic Magneto-resistive (AMR) sensor has been developed. The system mainly consists of magnetic probe, sampling card, and industrial computer. A GPS has also been brought in to stamp the TMF events time. This system can record TMF across a bandwidth from DC to 5MHz and a dynamic range from 20mGs to 6Gs for at least 50ms continuously. Laboratory tests show that the system linearity is greater than 97%, the measuring error is less than 3% and the verified rising time of input magnetic field reaches 6.4μs. Field applications are presented at last, they show that the TMF is very complex but regular to some extent, and the stable magnetic fields are in conformity with operation theory. In conclusion, the proposed system is high sensitivity, wide dynamic and relatively wide bandwidth, and it is qualified to most applications in substations.

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基于AMR传感器的便携式三轴瞬变磁场测量系统的研制与应用

随着智能变电站的发展，变电站开关运行过程中产生的暂态磁场受到越来越多的关注。为了研究TMF，研制了一种基于各向异性磁阻传感器的便携式集成系统。该系统主要由磁探头、采样卡和工控机组成。GPS也被引入来标记TMF事件的时间。该系统可以记录从DC到5MHz的带宽和从20mg到6Gs的动态范围内的TMF，连续至少50ms。实验室测试表明，系统线性度大于97%，测量误差小于3%，验证输入磁场上升时间达到6.4μs。最后给出了磁场应用，结果表明，时域磁场非常复杂，但有一定的规律性，稳定的磁场符合运算理论。综上所述，该系统具有灵敏度高、动态宽、带宽较宽的特点，能够满足变电站的大部分应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2013 IEEE International Conference on Smart Instrumentation, Measurement and Applications (ICSIMA)

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