摘要详情

ID / 提交时间

258 / 2024-07-13 10:53:46

标题

Transient Interruption Characteristics of Sub-millisecond Ultra-fast Vacuum Interrupter

关键字

Sub-millisecond, ultra-fast vacuum interrupter,transient interruption characteristics

主题及专题

1)Emerging HV Switching Technologies

状态

摘要待审

作者

Yifan Chen / State Key Laboratory of Electrical Insulation and Power Equipment; Xi’an Jiaotong University

Siyuan Liu / State Key Laboratory of Electrical Insulation and Power Equipment; Xi’an Jiaotong University

Jinchao Chen / Xi’an Jiaotong University；State Key Laboratory of Electrical Insulation and Power Equipment

zhiyuan liu / State Key Laboratory of Electrical Insulation and Power Equipment； Xi’an Jiaotong University

Yingsan Geng / State Key Laboratory of Electrical Insulation and Power Equipment； Xi’an Jiaotong University

摘要

The rapid development of power systems led to an increase in the short-circuit current level of the system. Ultra-fast vacuum interrupters (VIs) are promising equipment for the fast interrupting short-circuit current. In this paper, the 40.5 kV sub-millisecond ultra-fast VI is developed based on the electromagnetic repulsion mechanism and the 40.5 kV lightweight VI. The average velocity of the 40.5 kV sub-millisecond ultra-fast VI is significantly improved, which is 9.83 m/s within 4 mm of contact separation. Then, a voltage-source converter (VSC) assisted resonant current (VARC) direct current circuit breaker (DCCB) based on 40.5 kV sub-millisecond ultra-fast VI was constructed, and current interruption experiments were carried out. The results show that the inherent opening time for 40.5 kV sub-millisecond ultra-fast VI is 0.57 ms, and it takes 0.98 ms for VARC DCCB to interrupt 11 kA from contact separation, significantly improving the capability of fault fast clearance after receiving a trip signal.