State Grid Jiangsu Electric Power Company

Southeast University

Wuhan University

State Grid Corporation of China

Jiangsu Electric Power Research Institute Co., Ltd.

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

State Grid Jiangsu Electric Power Research Institute

State Grid Suzhou Power Supply Company

Nanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs

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

Yang Xu

Zheng Wang

Chong Tong

Jian Xu

Wu Chen

Chen Chen

Tao Wang

Wei Yin

Ming Cheng

Peng Wang

Jinggang Yang

Peipei Li

Ning Wang

Qiang Huang

Jianjun Liu

Wei Gu

Bowen Wu

Yongling Lu

Rong Sun

Yunfeng Cai

Siyang Liao

Kang Dai

Wei Kong

Yu Chen

Yongfei Liu

Min Xiang

Pengcheng Liu

Jiahuan Feng

Qi Pan

Jinwen Mai

Zhixiang Zou

Liang Wang

Weiliang Wang

Songchao Zhang

Xinyu Xue

Longfei Cui

Dan Wang

Zhu Sun

Dongsheng Jing

Tao Sun

Feixiang Le

Chen Cai

Huiwen Lu

Suming Ding

Yongkui Jin

Junlin Su

Qingqing Zhou

Yinzhen Shen

Jianqiang Miao

Zhijian Wu

Zhong Liu

Shan Gao

Hongtao Li

Xin Zhan

Shaobo Chen

Jingtan Ma

Zhihao Fang

Renjie Sui

Ke Zhao

Zhaohui Zhang

Tianxin Zhuang

Yujie Li

Yi Hong

Dajun Ma

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

A generator system includes a permanent magnet synchronous generator, a high-frequency matrix converter, a center-tapped high-frequency transformer and a full-bridge converter. An output port of the permanent magnet synchronous generator is connected to a three-phase input of the high-frequency matrix converter. Positive and negative output poles of the high-frequency matrix converter are connected to a primary side of the center-tapped high-frequency transformer, The primary side of the high-frequency transformer is connected to a center tap and then connected to the middle pole of the center-tapped high-frequency matrix converter, and the secondary side of the center-tapped high-frequency transformer is connected to the midpoint of the bridge arms of the full-bridge converter. A midpoint of the input bridge arm of the full-bridge converter is connected to the secondary side of the center-tapped high-frequency transformer, and an output side of the full-bridge converter is connected with a DC load.

Generator system based on high-frequency isolated matrix converter and regulation method thereof

A weeding robot and a method and apparatus for planning a weeding path for the weeding robot and a medium are provided. The method for planning a weeding path for the weeding robot includes the following steps: acquiring an image segmentation model based on neural network model training, where the image segmentation model is configured to identify and segment a weed target feature, a soil target feature and a crop target feature; and based on the weed target feature, acquiring the weed target feature by intra-camera tracking, and acquiring the weed target feature by inter-camera tracking, and planning a weeding path for a weeding robotic arm of the weeding robot, to enable the weeding robotic arm to weed according to the weeding path.

Weeding robot and method and apparatus for planning weeding path thereof, and medium

A current fed high-frequency isolated matrix converter and the corresponding modulation and control schemes are provided. The converter includes a current source full-bridge converter, a high-frequency transformer, a matrix converter, and a three-phase filter. An optimized space vector modulation solution is used for controlling the converter, and by comparing magnitudes of three-phase filter capacitor voltages to determine an action sequence of space vectors, switch tubes are turned on at zero voltage. A current source full-bridge circuit adopts a commutation strategy of a secondary clamping, and by calculating a leakage inductive current commutation time, full-bridge switch tubes are turned off at zero current to achieve safe and reliable commutation, and having advantages of a low system loss, a high efficiency, and a high power density.

Current fed high-frequency isolated matrix converter with the corresponding modulation and control schemes

The present disclosure relates to a submodule topology circuit for a modular multilevel converter and a method for controlling same. The submodule topology comprises an inlet port and an outlet port, at least two half-bridge submodules, a plurality of first switching devices, a plurality of thyristors and a plurality of diodes, wherein the at least two half-bridges are connected in series and are provided between the inlet port and the outlet port, and each of the half-bridge submodules is provided with an input port, a first output port and a second output port.

Submodule topology circuit for modular multilevel converter and method for controlling same

Provided are a load transfer method and system in thunder and lightning weather. The method includes: detecting lightning and predicting a position and time of a lightning strike to obtain a lightning prediction result; determining a transmission line possibly struck by lightning in a power grid according to the lightning prediction result; determining a load transfer scheme; and before the lightning occurs, transferring at least part of loads on the transmission line possibly struck by lightning according to the load transfer scheme.

Method and system for transferring a load in a thunder and lightning weather

A lightning strike probability-based coordinated power control method for an energy storage system and a load adjusts output power of an energy storage system and a regulatable load based on a real-time predicted lightning strike probability. This reduces a correlation between a power grid in a lightning region and an external power grid, minimizes impact of a lightning strike if any on the external power grid, and decreases an economic loss due to the lightning strike in the lightning region. The present disclosure establishes a relationship between the output power of the energy storage system, the regulated power of the regulatable load, and a lightning strike probability in a same region, and then regulates the power of the energy storage system and the regulatable load in real time based on the lightning strike probability.

Lightning strike probability-based coordinated power control method for energy storage system and load

Growing community of inventors

Jiangsu, China

Yang Xu