Influence of Moveable Mass on the Opening Velocity and Buffering Characteristics of Fast Vacuum Circuit Breaker with a Gas Pressure Buffer

2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST) Pub Date : 2019-10-01 DOI:10.1109/ICEPE-ST.2019.8928735

Chen Guan, Jianhua Wang, Dingyuan Peng, W. Shi, Jiali Chen, Bojian Zhang, Jing Yan, X. Yao, Zhiyuan Liu, Yingsan Geng

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引用次数: 1

Abstract

The objective of this paper is to determine the influence of moveable mass on the opening velocity and buffering characteristics of fast vacuum circuit breakers (FVCB) with a gas pressure buffer. A multi-physics field simulation model was built, which coupled the flow field, transient electromagnetic field, mechanical motion and external circuit. The average velocity in the first 1/3 stroke (10 mm) was defined as the opening velocity. Simulation results showed that with the increase of moveable mass from 4 to 12 kg, the opening velocity decreased following a negative exponent function from 6.13 to 3.50 m/s; the momentum at the end of 30 mm full stroke increased following a positive exponent function from 12.26 to 21.01 kg.m/s; and the work done by the buffering force decreased following quadratic function from 443.61 to 203.02 J. The relationship between buffering force and the displacement of the moveable part was described as a power function.

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可动质量对带气压缓冲器的快速真空断路器开启速度和缓冲特性的影响

本文的目的是确定可动质量对带气体压力缓冲器的快速真空断路器(FVCB)的开启速度和缓冲特性的影响。建立了流场、瞬变电磁场、机械运动和外电路耦合的多物理场仿真模型。前1/3冲程(10mm)的平均速度被定义为开启速度。仿真结果表明，随着可动质量从4 kg增加到12 kg，开启速度呈负指数函数从6.13减小到3.50 m/s;在30mm全冲程结束时，冲力从12.26 kg.m/s增加到21.01 kg.m/s，呈正指数函数增加;缓冲力所做的功由443.61减小为203.02 j，缓冲力与可动部件位移的关系为幂函数关系。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2019 5th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST)

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