基于巨磁阻效应的微型电流传感器装置研发及应用

Research and Application of Micro Current Sensor Based on Giant Magnetoresistance Effect

先进的传感和测量技术是实现透明电网和电力物联网的关键。为适应电力物联网的测量需求,本文研制了基于巨磁阻效应的微型电流传感器装置,完成了传感器整体架构、信号处理电路、数字处理电路、自取能、无线通信、温度补偿等功能模块的设计,根据安装需求设计了传感器外壳结构,并进行了IP和绝缘专项防护设计,最后将研制的传感器在低压配电领域开展了长期试点应用。结果表明,研制的微型电流传感器可长期稳定可靠工作,具有微型化、集成度高、安装便捷、远程管理等优点,可为配电网运行提供更全面、实时的信息支撑,为智能电网的透明化管理奠定基础。

Advanced sensing and measurement technology is the key to realize transparent power grid and power Internet of Things.In order to meet the measurement needs of the power Internet of Things,this paper developed a micro current sensor device based on giant magnetoresistance effect,including the design of the sensor architecture,signal processing circuit,digital processing circuit,self energy,wireless communication,temperature compensation and other functional modules,the sensor shell structure is designed and the special protection design of IP and insulation is carried out.Finally,the sensor has been applied in the field of low-voltage distribution for a long time.The results show that the current sensor can work stably and reliably for a long time.It has the advantages of miniaturization,high integration,convenient installation and remote management.It can provide more comprehensive and real-time information support for the operation of the distribution network and lay the foundation for the transparent management of the smart grid.