基于电磁互感自取电的恒压并联电流补偿方法

通过物联网(the internet of things,IoT)终端对高压线路进行实时在线检测是非常重要的技术方法.传统的电流互感器在高压输电线上流过的电流较小时难以高效取电供后级物联网终端设备.针对该问题,提出了一种基于电磁互感自取电的恒压并联电流补偿方法,设计了补偿电路.通过对升压电路输出端的电流采样,来控制主副...

Constant voltage parallel current compensation method based on electromagnetic mutual inductance self-powering

Real-time online detection of high-voltage lines through IoT terminals is a very important technical method. When the current flowing through the traditional current transformer on the high-voltage transmission line is small, it is difficult to efficiently obtain power for the subsequent IoT terminal equipment. Aiming at this problem, a constant voltage parallel current compensation method based on electromagnetic mutual inductance self-supply is proposed, and a compensation circuit is designed. By sampling the current at the output end of the booster circuit, the parallel current of the main and auxiliary coil loops is controlled to achieve high-efficiency power supply and meet the requirements of normal power supply for electrical equipment under the condition of small currents on high-voltage lines. Experiments and practical applications have proved that the device can maintain stable power supply to the subsequent devices in the small hours of current flowing through the high-voltage line, and provide a reliable power supply for the stable operation of the Internet of Things terminal equipment.