Global Energy Interconnection Research Institute Co. Ltd

State Grid Corporation of China

State Grid Shanghai Electric Power Co. Ltd

Guoliang Zhao

Jun Ge

Zhanfeng Deng

Feng Wang

Dong Liang

Haijun Liu

Zhe Zhou

Guangyao Qiao

Xiaolin Mo

Zhengang Lu

Xiang Wang

Weiguo Li

Wei Kang

Weidong Shen

Yunfei Xu

Guofu Chen

Linhai Cai

Guozhong Zhang

Wenyuan Ning

Zhenjiang Shi

Qiuyu Shi

Jing Ge

Jieying Song

Pengliang Xu

A power electronic transformer structure includes: a support, a high-frequency transformer, a base, high-voltage side modules, and a low-voltage side module. The high-voltage side modules are respectively located at the front, top, and back of the support; the low-voltage side module is located at the bottom of the support; the high-frequency transformer is located at the middle of the support.

Power electronic transformer structure

A high-frequency transformer includes: an iron core, primary windings and secondary windings, wherein the iron core is of an integrated equilateral triangle structure, the primary windings and the secondary windings are uniformly wound around three sides of the iron core, and the primary windings and/or the secondary windings are symmetrically distributed on the three sides.

High-frequency transformer

Provided are an insulation coordination method and system for a series compensation apparatus, a storage medium and an electronic device. The method includes determining a topology of a series compensation apparatus and a system parameter and an operation mode of an access system of the series compensation apparatus; performing overvoltage partitioning on the series compensation apparatus; constructing a simulated operating condition according to a plurality of overvoltage analysis areas and an operating condition; establishing an overvoltage simulation analysis model; in each overvoltage analysis area, performing a simulating calculation for different preset fault types according to the overvoltage simulation analysis model; determining the number of lightning arresters installed in each overvoltage analysis area and a continuous operating voltage value of each lightning arrester; and determining, according to a preset insulation coordination coefficient and the continuous operating voltage value of each lightning arrester, a safe operating voltage of the series compensation apparatus.

Insulation coordination method and system for a series compensation apparatus, storage medium and electronic device

Disclosed in embodiments of the present invention are a control method and device for an alternating-current and direct-current conversion circuit, and a computer storage medium. The alternating-current and direct-current conversion circuit comprises a first commutation unit, a second commutation unit, and a coupling unit. By obtaining voltage information and current information of the alternating-current and direct-current conversion circuit, a controllable device of the first commutation unit can be controlled to be turned on in delay or turned off in advance; and the second commutation unit is controlled to work in a controllable rectification state or a controllable inversion state or an uncontrollable rectification state.

Control method and device for alternating-current and direct-current conversion circuit, and computer storage medium

Growing community of inventors

Beijing, China

Guoliang Zhao