Results 171 to 180 of about 577 (206)

Suppression of Fast Transient Overvoltage During Gas Disconnector Switching in GIS

IEEE Power Engineering Review, 1986
This paper describes the suppression of the transient overvoltage caused by gas disconnector switching of a small capacitive charging current in a gas insulated switchgear substation. The overvoltage is suppressed by the insertion of a resistor with an appropriate value during the switching. A scale model gas disconnector with the resistor is developed.
J. Ozawa, T. Yamagiwa, M. Hosokawa, S. Takeuchi, H. Kozawa   +4 more
openaire   +1 more source

Lightning overvoltage suppression to UHV power transformer by ferromagnetic ring

Electric Power Systems Research, 2013
Abstract Lightning overvoltage protection is of great importance to the safety of devices in UHV GIS. In practice, insulation failure of UHV transformer due to lightning strike is often reported. The widely used UHV metal-oxide arresters can suppress the magnitude of lightning overvoltage but lack effectiveness on alleviating the steepness.
Xiao Zhang, Jinliang He
openaire   +1 more source

A Novel Gate Driver for Suppressing Overcurrent and Overvoltage of SiC MOSFET

2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia), 2019
SiC MOSFET has faster switching speed, lower RDs(on), and higher breakdown voltage when compared with Si MOSFET. Therefore., SiC MOSFET can work at work at higher frequencies., even Mhz. However., the overvoltage and overcurrent (OVOC) of SiC MOSFET become more serious with the increase of frequency due to the low damping and the parasitic parameters ...
Jiangui Chen, Yan Li, Mei Liang, R. Kennel, Jiayu Liu, Haobo Guo   +5 more
openaire   +1 more source

Study on Submarine Cable Overvoltage Impact Test Suppression Measures

2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC), 2018
Submarine cable capacitance effect is obvious, AC submarine cable connect to the grid by the offshore wind farm and onshore wind farm reactive voltage distribution characteristics, there are significant differences in fault characteristics, more prone to overvoltage problems, may damage the cable insulation failure.
Lei Zhang, Guozhi Chen, Yan Li, Lu Sun, Kai Hu, Yanjie Le   +5 more
openaire   +1 more source

Analysis of Switching Overvoltage and Suppression Measures in UHV Transmission Lines

Canadian Journal of Electrical and Computer Engineering, 2019
As the ultrahigh-voltage (UHV) projects are rapidly developing, it is necessary to investigate the problems involved in overvoltage and insulation, thereby providing a technical basis for future UHV projects. The switching overvoltage of closing no-load lines was simulated and analyzed here using two kinds of typical UHV network structures: the power ...
Han Yanan, Han Bin, Xiang Zutao
openaire   +1 more source

Overvoltage suppression of SRM inverter for effective use of regenerative power

2016 IEEE Industrial Electronics and Applications Conference (IEACon), 2016
This paper proposes inverter circuit with snubber circuit to suppress the overvoltage of inverter circuit I which can use regenerative power effectively to improve the efficiency. And the effect of overvoltage suppression is verified. Furthermore, the influences of excitation angle and resistance are analyzed by simulation results using MATLAB Simulink.
Kou Houi, Kazuhiro Ohyama, Hiroaki Fujii, Hitoshi Uehara, Yasushi Hyakutake   +4 more
openaire   +1 more source

Mechanism of Overvoltage and Strategies of Overvoltage Suppression for UHVDC Systems Powered by Renewable Energy

2022 5th International Conference on Energy, Electrical and Power Engineering (CEEPE), 2022
Ying Xu, Xuan Li, Ziyu Guo, Zijian Gao
openaire   +1 more source

Suppression of lightning‐induced overvoltages by distribution line surge arresters

Electrical Engineering in Japan, 1996
AbstractThe primary aim of surge arresters in power distribution lines is to protect lines and equipment from the voltage induced by nearby lightning strokes. To further improve power systems, methods to protect distribution lines against direct lightning strokes are still needed. An effective measure against direct lightning strokes is to increase the
Nobuyuki Fujiwara, Tsukasa Yoneyama, Yoshiyuki Hamada, Tsutomu Yokota, Akira Asakawa, Tetsuro Shimomura, Koichi Yamaoka, Shinji Ishibe   +7 more
openaire   +1 more source

Mechanism and Suppression of DC Overvoltage of Static Var Generators

2022 Power System and Green Energy Conference (PSGEC), 2022
Leixuan Shentu, Wei Dong, Junxiao Chang, Wen Hua, Chen Wang, Di Zheng   +5 more
openaire   +1 more source

Suppression of arc grounding overvoltage by using ZnO nonlinear resistance grounding mode

IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society, 2015
Developments in power capacity have made arc grounding overvoltage increasingly prominent. This paper proposes a new method for determining current-voltage (I-V) characteristics of ZnO nonlinear resistance on a new grounding mode, by analyzing the power system through the symmetrical component method, considering system capacities, operation mode, and ...
Wangjing Tan, Qian Wang, Jiandong Duan, Zan Ye, Jingjing Huang   +4 more
openaire   +1 more source