6-inch 4.5kV/10kA IGCT with low on-state voltage for DC Circuit Breakers

2021 ◽  
Author(s):  
C. Guohong ◽  
C. Yongmin ◽  
C. Fanglin ◽  
J. Yi ◽  
L. Jiapeng ◽  
...  
Keyword(s):  
Circuit Breakers ◽  
Dc Circuit Breakers

scholarly journals Solid-State DC Circuit Breakers and their Comparison in Modular Multilevel Converter Based-HVDC Transmission System

Electronics ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1204
Author(s):  
Gul Ahmad Ludin ◽  
Mohammad Amin Amin ◽  
Hidehito Matayoshi ◽  
Shriram S. Rangarajan ◽  
Ashraf M. Hemeida ◽  
...  
Keyword(s):  
Solid State ◽  
High Voltage ◽  
Direct Current ◽  
Circuit Breaker ◽  
Transmission System ◽  
Simulation Software ◽  
Fault Current ◽  
Circuit Breakers ◽  
Hvdc Transmission ◽  
Dc Circuit Breakers

This paper proposes a new and surge-less solid-state direct current (DC) circuit breaker in a high-voltage direct current (HVDC) transmission system to clear the short-circuit fault. The main purpose is the fast interruption and surge-voltage and over-current suppression capability analysis of the breaker during the fault. The breaker is equipped with series insulated-gate bipolar transistor (IGBT) switches to mitigate the stress of high voltage on the switches. Instead of conventional metal oxide varistor (MOV), the resistance–capacitance freewheeling diodes branch is used to bypass the high fault current and repress the over-voltage across the circuit breaker. The topology and different operation modes of the proposed breaker are discussed. In addition, to verify the effectiveness of the proposed circuit breaker, it is compared with two other types of surge-less solid-state DC circuit breakers in terms of surge-voltage and over-current suppression. For this purpose, MATLAB Simulink simulation software is used. The system is designed for the transmission of 20 MW power over a 120 km distance where the voltage of the transmission line is 220 kV. The results show that the fault current is interrupted in a very short time and the surge-voltage and over-current across the proposed breaker are considerably reduced compared to other topologies.

scholarly journals Backup Protection Algorithm for Failures in Modular DC Circuit Breakers

2020 ◽  
pp. 1-1
Author(s):  
Mian Wang ◽  
Mario Zaja ◽  
Jef Beerten ◽  
Dragan Jovcic ◽  
Dirk Van Hertem
Keyword(s):  
Circuit Breakers ◽  
Backup Protection ◽  
Dc Circuit Breakers

Frontiers of DC circuit breakers in HVDC and MVDC systems

2017 ◽  
Author(s):  
Gen Li ◽  
Jun Liang ◽  
Senthooran Balasubramaniam ◽  
Tibin Joseph ◽  
Carlos E. Ugalde-Loo ◽  
...  
Keyword(s):  
Circuit Breakers ◽  
Dc Circuit Breakers

scholarly journals Coordination of MMCs With Hybrid DC Circuit Breakers for HVDC Grid Protection

2019 ◽  
Vol 34 (1) ◽  
pp. 11-22 ◽  
Author(s):  
Sheng Wang ◽  
Chuanyue Li ◽  
Oluwole Daniel Adeuyi ◽  
Gen Li ◽  
Carlos Ernesto Ugalde-Loo ◽  
...  
Keyword(s):  
Circuit Breakers ◽  
Dc Circuit Breakers

6-in Dual-Gate Ring Commutated Thyristor for DC Circuit Breakers

2019 ◽  
Vol 66 (3) ◽  
pp. 1444-1449 ◽  
Author(s):  
Gang Lyu ◽  
Zhanqing Yu ◽  
Wenpeng Zhou ◽  
Chaoqun Xu ◽  
Zhengyu Chen ◽  
...  
Keyword(s):  
Circuit Breakers ◽  
Dual Gate ◽  
Dc Circuit Breakers
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