万能式断路器短时耐受性能研究综述  

Overview of Research About Short-Time Withstand Performance for Air Circuit Breaker

作　　者：邓晓峰[1] 屈建宇[1] 侯国斌 吴艺红[1] 李兴文[1] DENG Xiaofeng QU Jianyu HOU Guobin WU Yihong LI Xingwen(State Key Laboratory of Electrical Insulation and Power Equipment, Xi ＇ an Jiaotong University, Xi＇ an 710049, China)

机构地区：[1]西安交通大学电力设备电气绝缘国家重点实验室

出　　处：《电器与能效管理技术》2017年第12期1-7,共7页Electrical & Energy Management Technology

基　　金：国家自然科学基金资助项目(51222704)

摘　　要：万能式断路器广泛应用于配电系统中,作为B类低压断路器,短时耐受电流是其重要的性能指标。首先介绍了描述触头间电流收缩的建模方法;然后综述短时耐受过程中的电动稳定性和热稳定性的研究状况;最后基于1 600 A万能式断路器进行了仿真研究,对影响短时耐受电流的因素进行了分析。有助于进一步理解短路电流作用下多并联触头系统动热稳定性的物理机制,丰富大电流电接触理论,并为高性能低压万能式断路器的研发与优化设计提供一定的理论借鉴和技术手段。Conventional air circuit breakers （ACBs） belong under B-type low voltage circuit breakers, and are widely used in power distribution networks. The breakers have a key performance parameter, which is the short-time withstand current （low）. The model used to describe the current constriction between contacts was introduced firstly. Then the research progress of dynamic stability and heat stability was reviewed. Finally, the factors that influence the short-time withstand current were analyzed based on one ACB with 1 600 A rated current. The research work is expected to enrich the understanding of the electro-dynamlc and thermal stability of multiple parallel contacts system, and provides theoretical supports to the development and the optimization of new-type and high performance ACBs.

关 键 词：万能式断路器 短时耐受电流 电动稳定性 热稳定性 

分 类 号：TM561[电气工程—电器]