基于巨磁阻效应的高性能电流传感器及其在智能电网的量测应用

发布时间：2018-04-21 03:11

本文选题：智能电网 + 巨磁阻效应　；参考：《高电压技术》2017年07期

【摘要】：智能电网需要先进传感测量技术的支持。为此,针对智能电网中的电流测量需求,介绍了基于巨磁阻效应的高性能电流传感器,包括传感器系统结构、磁环、巨磁阻传感芯片、信号处理电路等的设计,以及对温度稳定性、电磁兼容性的设计。实验结果表明,所设计的基于巨磁阻效应的高性能电流传感器在对电网中暂态电流、直流电流、泄漏电流、电晕电流的测量中表现出良好的性能,实现了对带宽直流到10 MHz、幅值1 m A至1.6 k A的电流的精确测量。相比其他电流测量装置,基于巨磁阻效应的高性能电流传感器具有体积小、灵敏度高、成本低、测量范围大、可集成度高等综合优势,适应了智能电网的测量需求。最后,提出了后续研究方向。
[Abstract]:Smart grid needs the support of advanced sensing technology. For this purpose, the high performance current sensor based on giant magnetoresistance effect, including sensor system structure, magnetic loop, giant magnetoresistance sensor chip, signal processing circuit, and the design of temperature stability and electromagnetic compatibility are introduced in view of the demand of current measurement in Smart Grid. The experimental results show that the high performance current sensor based on the giant magnetoresistance effect shows good performance in the measurement of transient current, DC current, leakage current and corona current in the power grid. The accurate measurement of the current to 10 MHz with a bandwidth of 1 m A to 1.6 K A is achieved. The high performance current sensor of giant magnetoresistance effect has the advantages of small volume, high sensitivity, low cost, large measurement range and high integration degree, which adapts to the measurement demand of smart grid. Finally, the following research direction is put forward.

【作者单位】：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;斯坦福大学磁纳米技术中心;中国电力科学研究院;
【基金】：国家重点基础研究发展计划(973计划)(2013CB228206) 国家自然科学基金(51429701) 国家电网公司科技项目(5342GY140023)~~
【分类号】：TM76;TP212.9

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