摘要
针对真空断路器触头温升问题,基于记忆合金材料的温度形变性能,在梅花触头上安装记忆合金弹簧,提高梅花触头工作性能。测量不同温度时记忆合金弹簧的直线拉力,转化为径向向心力,推导出每片触片与静触头之间的接触压力;并利用多物理场耦合分析软件COMSOL Multiphysics仿真计算梅花触头的温度场,搭建梅花触头温升试验平台;对比分析试验和仿真数据,结果表明:记忆合金弹簧有助于降低梅花触头温升,提高真空断路器运行的安全可靠性。
Aiming at the problem of contact＇s temperature rise in vacuum circuit breaker, this paper applied the temperature deformation of alloy springs to improve the working performance of tulip contacts. The straight line＇s tension of the memory alloy spring was measured at different temperature, and it was converted into radial centripetal force. Thus the contacting force between vacuum breaker finger and movable contact was deduced. The temperature field of vacuum circuit breaker was simulated by using multi-physical field coupling analysis software COMSOL Mul-tiphysics, and the experimental platform to test the temperature of tulip contact was set up. The simulation analysis and experimental results show that the memory alloy springs is helpful to rduce the temperature rise of the tulip contacts, it can improve the safety and reliability of the vacuum circuit breaker.
出处
《电力科学与技术学报》
CAS
北大核心
2016年第3期146-151,共6页
Journal of Electric Power Science And Technology
基金
福建省科技厅高校产学研合作科技重大项目(2015H0041
2014H6028)
关键词
真空断路器
梅花触头
记忆合金
温度场
vacuum circuit breaker
tulip contact
memory alloy
temperature field
