The Influence of Contact Space on Arc Commutation Process in Air Circuit Breaker

In this paper, a 3D magneto-hydrodynamic （MHD） arc simulation model is applied to analyze the arc motion during current interruption in a certain air circuit breaker （ACB）. The distributions of pressure, temperature, gas flow and current density of the arc plasma in the arc region are calculated, an...

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Bibliographic Details
Published inPlasma science & technology Vol. 18; no. 5; pp. 460 - 464
Main Author 纽春萍 丁炬文 杨飞 董得龙 荣命哲 徐丹
Format Journal Article
LanguageEnglish
Published 01.05.2016
Subjects
Circuit breakers
Commutation
Contact
Current density
Design analysis
Electric potential
Magnetohydrodynamics
Mathematical models
仿真结果
换向过程
灭弧过程
电弧电压
电流密度
空气断路器
空间设计
计算结果
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ISSN1009-0630
DOI10.1088/1009-0630/18/5/02

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Summary:In this paper, a 3D magneto-hydrodynamic （MHD） arc simulation model is applied to analyze the arc motion during current interruption in a certain air circuit breaker （ACB）. The distributions of pressure, temperature, gas flow and current density of the arc plasma in the arc region are calculated, and the factors influencing the commutation process are analyzed according to the calculated results. Based on the airflow in the arc chamber, the causes of arc commutation asynchrony and the back commutation are investigated. It indicates that a reasonable contact space design is crucial to a successful arc commutation process. To verify the simulation results, the influence of contact space on arc voltage and arc commutation is tested. This research can provide methods and references to the optimization of ACB design.
Bibliography:air circuit breaker, arc simulation, arc commutation, arc chamber
NIU Chunping , DING Juwen , YANG Fei , DONG Delong , RONG Mingzhe , XU Dan （State Key Laboratory of Electrical Insulation and Power Equipment, Xi＇an Jiaotong University, Xi＇an 710049, China）
34-1187/TL
In this paper, a 3D magneto-hydrodynamic （MHD） arc simulation model is applied to analyze the arc motion during current interruption in a certain air circuit breaker （ACB）. The distributions of pressure, temperature, gas flow and current density of the arc plasma in the arc region are calculated, and the factors influencing the commutation process are analyzed according to the calculated results. Based on the airflow in the arc chamber, the causes of arc commutation asynchrony and the back commutation are investigated. It indicates that a reasonable contact space design is crucial to a successful arc commutation process. To verify the simulation results, the influence of contact space on arc voltage and arc commutation is tested. This research can provide methods and references to the optimization of ACB design.
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ISSN:1009-0630
DOI:10.1088/1009-0630/18/5/02