基于磁场感知的非侵入式电流量测技术研究综述

Review of Non-invasive Current Measurement Technology Based on Magnetic Field Sensing

摘要:

随着新型电力系统对可观可测能力需求的日益增长，非侵入式电流测量设备因其绝缘优势和安装便捷得到广泛应用。随着磁敏传感技术在近年蓬勃发展，以量子隧穿磁阻效应和电子顺磁共振效应为代表的磁场测量技术引领了非侵入式电流量测技术变革。首先，从场源关系的视角，重新梳理了当前非侵入式电流量测设备技术体系；然后，针对电网磁场多源耦合的分布特征，进一步分析了磁场测量数据反演方法，重点探讨了系数矩阵计算和磁场测量误差抑制方法的研究进展；最后，对当前技术发展现状进行了总结和展望。

Abstract:

With the increasing demand of the observable and measurable capacity for new power system, non-invasive current measuring equipment is widely used due to their insulation advantages and installation convenience. With the rapid development of magnetoresistive sensing technology in recent years, the magnetic field measurement technology represented by tunneling magneto-resistance effect and electron paramagnetic resonance effect has led to the transformation of non-invasive current measurement technology. Firstly, from the perspective of field-source relationship, the current technical system of non-invasive current measurement equipment is reorganized. And then, the magnetic field inversion method based on magnetic field measurement data is further analyzed aiming at the distribution characteristics of multi-source coupling of power grid magnetic field, and the research progress of coefficient matrix calculation and magnetic field measurement error suppression methods is discussed. Finally, the current status of technology development is summarized and future prospects are discussed.