Ontology and Anti-interference Design of Current Sensor with High Voltage, Wide Frequency Band and Large Current Based on Giant Magneto Resistive Effect

WANG Shanxiang; WANG Zhongxu; HU Jun; OUYANG Yong; YUAN Zhiyong; HE Jinliang

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Ontology and Anti-interference Design of Current Sensor with High Voltage, Wide Frequency Band and Large Current Based on Giant Magneto Resistive Effect

更新时间：2025-12-08

- Ontology and Anti-interference Design of Current Sensor with High Voltage, Wide Frequency Band and Large Current Based on Giant Magneto Resistive Effect
- Vol. 42, Issue 6, Pages: 1715-1723(2016)
- 作者机构：
  
  1. 清华大学电机工程与应用电子技术系电力系统及发电设备控制和仿真国家重点实验室
  2. 斯坦福大学磁纳米技术中心
  3. 南方电网科学研究院有限责任公司
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：30 June 2016，
  
  Published：2016
- 稿件说明：
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WANG Shanxiang, WANG Zhongxu, HU Jun, et al. Ontology and Anti-interference Design of Current Sensor with High Voltage, Wide Frequency Band and Large Current Based on Giant Magneto Resistive Effect[J]. 2016, 42(6): 1715-1723.
DOI：

WANG Shanxiang, WANG Zhongxu, HU Jun, et al. Ontology and Anti-interference Design of Current Sensor with High Voltage, Wide Frequency Band and Large Current Based on Giant Magneto Resistive Effect[J]. 2016, 42(6): 1715-1723. DOI：

摘要

智能电网的快速发展使其对高性能传感器的需求日益强烈。为此

针对电力系统应用需求设计了基于巨磁阻效应的宽频大电流传感装置

包括放大、滤波、退磁和供电等调理电路

并考虑智能电网中传感器高压、强干扰的应用场合

对装置进行了电磁屏蔽设计和印刷电路板抗干扰设计。计算结果表明该装置对工频磁场的屏蔽效能达到41.6 d B

抗干扰测试结果表明所设计传感器具备抵抗强电磁干扰能力

同时实验结果表明该装置对雷电流测量准确度>93.9%。基于巨磁阻效应的宽频大电流传感装置有效实现了对直流到10 MHz带宽的大电流的准确测量

相对其他电流测量装置具有更高的灵敏度和电流测量范围

适应了智能电网的发展需求。

Abstract

The rapid development of smart grid shows great demand for high-performance sensors. Thus

we designed a current sensor device with high voltage

wide frequency band

and large current based on giant magneto resistance effect

including the amplifier module

filtration module

degaussing module

and power module. The electromagnetic shielding of the device was also designed in terms of the operation environment with strong electromagnetic interferences. The calculation results indicate that the device’s shielding effectiveness to the external magnetic field can reach 41.6 d B. It is proved by electromagnetic compatibility test that the developed device can effectively suppress the external electromagnetic interferences. Meanwhile

the accuracy of the current sensor device in measuring the lightning current can be more than 93.9% in the experiment. Therefore

aiming at measuring large current with wide bandwidth of DC-10 MHz in the smart grid

the proposed current sensor device has great advantages over current sensors based on other techniques and prospects in measuring large current with wide bandwidth in smart grid.

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