State Grid Jiangsu Electric Power Company

Jiangsu Electric Power Research Institute Co., Ltd.

State Grid Jiangsu Electric Power Co., Ltd. Research Institute

State Grid Jiangsu Electric Power Research Institute

Taizhou Power Supply Branch of State Grid Jiangsu Electric Power Co., Ltd.

Rong Sun

Jinggang Yang

Qiang Huang

Jianjun Liu

Zhen Wang

Yang Xu

Wei Zhang

Yongling Lu

Ting Chen

Jun Jia

Hui Fu

Xueqiong Zhu

Guojiang Zhang

Ziquan Liu

Jie Chen

Chengbo Hu

Nan Yao

Yongfei Liu

Hai Xue

Jingying Cao

Xiao Tan

Chenying Li

Libin Hu

Shan Gao

Hongtao Li

Shaobo Chen

Jingtan Ma

Ke Zhao

Rushan Wang

Zhaohui Zhang

Tianxin Zhuang

Yujie Li

Hanyan Xiao

A device for simulating high-frequency current propagation of partial discharge of a GIL/GIS is disclosed. The device comprises a casing, a busbar cavity, an adjustable impedor, a first metal support, a second metal support, a third metal support, and a high-frequency current sensor. The first metal support and the second metal support are separated by an insulating support, the third metal support has an end connected to the second metal support, as well as an end connected to a grounding grid, and the adjustable impedor is formed by an adjustable resistor and an adjustable inductor which are connected in series, and is connected in series between the first metal support and the second metal support through a wire. In the application, the adjustable impedor is connected in series to the metal supports at the grounding point to obtain an impedance equivalent to that of a long-distance GIL/GIS housing.

Device for simulating high-frequency current propagation of partial discharge of GIL/GIS

Disclosed are a device and method for detecting defects of a high-voltage cable cross-bonded grounding system. The method selects a protective grounding box of a cross-bonded grounding system, respectively connects a signal excitation coupler to A-phase, B-phase and C-phase coaxial cables of the protective grounding box, selects a stable signal with a frequency different from a power frequency or a field interference frequency, and tests effective current values and phases responded by the A-phase, B-phase and C-phase coaxial cables when the stable signal with the frequency F1 is injected into the A-phase, B-phase and C-phase coaxial cables of the protective grounding box; and obtains resistances and inductances of branch circuits of the cable cross-bonded grounding system by calculation according to measurement data, and determines if the cable cross-bonded grounding system has a connection defect.

Device and method for detecting defects of high-voltage cable cross-bonded grounding system

A micro-power wind-solar hybrid energy harvesting and power generating device including a solar power generation module, a wind power generation module, a control module, an energy storage module, and an accessory structure are provided. The solar power generation module is mainly composed of a solar thin film cell and a corresponding interface control circuit, and the wind power generation module includes a wind-induced vibration structure, a cantilever beam structure, a piezoelectric element, and a corresponding interface control circuit. The solar thin film cell is mounted at a top of the wind-induced vibration structure, and interface control circuits, the energy storage module, etc. are all arranged inside the wind-induced vibration structure. The control module is configured to handle an energy harvesting and power generating algorithm of the wind-solar hybrid power generating device to maximize the power generation quality and the power generation efficiency of the device.

Micro-power wind-solar hybrid energy harvesting and power generating device, and energy harvesting method

Growing community of inventors

Jiangsu, China

Rong Sun