State Grid Jiangsu Electric Power Company

State Grid Nanjing Supply Power Company

State Grid Jiangsu Electric Power Co., Ltd. Nanjing Power Supply Branch

State Grid Jiangsu Electric Power Co., Ltd. Shuangchuang Center

Honghua Xu

Hao Chen

Huan Zhang

Yang Liu

Meng Zhang

Jian Yang

Zichang Sun

Chong Peng

Mai Xiao

Chunyan Ma

Bing Xia

Xuan Zhao

Zhangying Li

Yongqiang Wang

Chi Xu

Yanjun Jiao

Ruowei Zhang

Provided are a method and apparatus for monitoring a current of the ground wire of an armouring shielding cable in a strong electromagnetic environment. In the method, a summation of currents of the ground wires in the armouring layer and a summation of currents of the ground wires in the shielding layer of M cables in a terminal box are collected, and a primary ground copper busbar potential and a secondary ground copper busbar potential of the terminal box and a ground current of an adjacent terminal box are collected; a potential difference alarm can be achieved; and according to whether a potential difference is alarmed, terminal box cable loop loop-current alarms are performed respectively using different criteria.

Method and apparatus for monitoring current of ground wire of armouring shielding cable in strong electromagnetic environment

A laser wireless power transmission device and method based on power acquisition on power line. The device includes a power transmitter and a power receiver both installed on a power transmission line. The power transmitter includes an online induction power acquisition module, a semiconductor laser, a communication module, a two-dimensional pan-tilt, a beam shaping module, a control unit, a video image module, and an IMU module. The power receiver includes a four-quadrant photovoltaic panel, a DCDC module, a wireless monitoring module, and a battery.

Laser wireless power transmission device and method based on power acquisition on power lines

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Jiangsu, China

Honghua Xu