摘要详情

ID / 提交时间

281 / 2024-09-09 16:03:46

标题

Dynamic Characteristics Analysis of 550 kV Fast Circuit Breaker Repulsion Valve

关键字

Fast circuit breaker,operating mechanism,repulsion valve,dynamic characteristics

主题及专题

全体主题

状态

终稿

作者

Huancheng Zou / Shenyang University of Technology；School of Electric Engineering

Bowen Xu / Department of Civil Engineering, Xi'an Jiaotong-Liverpool University

Jianwei Wei / China Electrical Equipment Pinggao Group Co., Ltd.

Zaixing Peng / Electric Power Research Institute of CSG

Xin Lin / School of Electrical Engineering；Shenyang University of Technology

摘要

The conventional 550 kV circuit breaker operating mechanism has a long start-up time, which cannot meet the requirements for rapid disconnection. This paper proposes a design scheme for a fast circuit breaker operating mechanism using a repulsion valve, establishes a simulation model for the valve's motion characteristics, calculates the effects of structural parameters of the repulsion mechanism and excitation coil parameters on the dynamic characteristics of the fast valve, and obtains the design parameter configuration for the repulsion module. The research results show that the structural parameters of the repulsion mechanism and the excitation coil have a significant impact on the motion characteristics of the repulsion valve. By adopting a design scheme with a repulsion disc radius and excitation coil radius of 80 mm, a repulsion disc thickness of 10 mm, 30 turns of the excitation coil, an excitation coil thickness of 5 mm, and an initial air gap of 1 mm, the action times for single and dual repulsion mechanisms are 1.74 ms and 1.52 ms, respectively. Based on the simulation results, a prototype was developed, and a mechanical characteristic test platform was built. The measured start-up time of the new fast hydraulic operating mechanism is 2.59 ms. The research findings provide theoretical support for the development of the fast repulsion valve.