TY - GEN
T1 - Interruption characteristics and reignition condition of direct-current forced current zero
AU - Wenlei, Huo
AU - Jianwen, Wu
AU - Xinchen, Jin
AU - Yun, Deng
AU - Chao, Xin
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/12/12
Y1 - 2017/12/12
N2 - The transient interruption characteristics and reignition conditions of direct-current (DC) forced current zero for vacuum interrupters in 270 V power-supply systems are discussed. Three stages are identified in forced interruption: DC arcing stage, current commutation stage, and voltage recovery stage. During the current commutation stage, the reverse peak current coefficient k, which is a key design factor, is used to calculate the rate of current at zero crossing (di/dt). MATLAB/Simulink simulation models are established to obtain the transient characteristics influenced by the forced commutation branch parameters and the coefficient k. Properly reducing the value of k could reduce the slope of di/dt and lead to better voltage characteristics. Interruption experiments are carried out using the spiral-type contact with diameter of 40 mm and material of CuW80. As the result, the breaking capacitor of vacuum breaker is lower and the value of di/dt is higher with the raise of the forced commutation frequency.
AB - The transient interruption characteristics and reignition conditions of direct-current (DC) forced current zero for vacuum interrupters in 270 V power-supply systems are discussed. Three stages are identified in forced interruption: DC arcing stage, current commutation stage, and voltage recovery stage. During the current commutation stage, the reverse peak current coefficient k, which is a key design factor, is used to calculate the rate of current at zero crossing (di/dt). MATLAB/Simulink simulation models are established to obtain the transient characteristics influenced by the forced commutation branch parameters and the coefficient k. Properly reducing the value of k could reduce the slope of di/dt and lead to better voltage characteristics. Interruption experiments are carried out using the spiral-type contact with diameter of 40 mm and material of CuW80. As the result, the breaking capacitor of vacuum breaker is lower and the value of di/dt is higher with the raise of the forced commutation frequency.
KW - forced current zero
KW - interruption characteristics
KW - reignition conditions
KW - reverse peak current coefficient
KW - vacuum interrupters
UR - https://www.scopus.com/pages/publications/85046904109
U2 - 10.1109/ICEPE-ST.2017.8188877
DO - 10.1109/ICEPE-ST.2017.8188877
M3 - 会议稿件
AN - SCOPUS:85046904109
T3 - ICEPE-ST 2017 - 4th International Conference on Electric Power Equipment- Switching Technology
SP - 461
EP - 464
BT - ICEPE-ST 2017 - 4th International Conference on Electric Power Equipment- Switching Technology
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 4th International Conference on Electric Power Equipment- Switching Technology, ICEPE-ST 2017
Y2 - 22 October 2017 through 25 October 2017
ER -