Research on Current Transfer Characteristics of Hybrid Circuit Breaker in Low Voltage DC Micro-grid

2019 4th Asia Conference on Power and Electrical Engineering

能源学;电工学

Guanying, Zhang^1^2 ; Fei, Gao^1^2

State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Electrical Engineering, Hebei University of Technology, Tianjing

300130, China^1

Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province, School of Electrical Engineering, Hebei University of Technology, Tianjing

300130, China^2

关键词: Breaking capacity;    Breaking characteristics;    Control strategies;    Current simulation;    Dc circuit breakers;    External circuits;    Hybrid circuit breaker;    RCD snubber circuits;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/486/1/012132/pdf
DOI  :  10.1088/1757-899X/486/1/012132

来源: IOP

【 摘 要 】

The analysis of current transfer characteristics of hybrid DC circuit breakers is of great significance for improving their breaking capacity and implementing control strategies. This paper analyzes the principle of hybrid DC circuit breakers. The hybrid circuit breaker simulation model is built based on the Mayr arc model in Matlab/Simulink using IGBT, RCD snubber circuit and arrester model. The current simulation waveforms under different external circuit parameters and transfer branch parameters with a voltage of 400V and breaking fault current less than 200A are mainly studied. Through the analysis of the current transfer characteristics, a series of theoretically supported breaking characteristics are obtained, which provide a reasonable and effective reference for the fast and reliable breaking of DC micro-grid hybrid circuit breaker.