摘要
以Workbench为仿真平台建立了液态金属型故障电流触发器的稳态电热场模型,进行了额定及过载通流条件下的温升仿真计算,并制作了额定1 k A的装置样机进行温升试验。试验结果显示额定电流条件下试验结果与仿真一致性较好,能准确计算出触发器各点温升;但过载条件下,当电流为1.2 k A时装置试品起弧分断,表明此时必须考虑电磁力作用影响。所建模型可用于指导液态金属型故障电流触发器的温升特性设计。
A temperature-rise model based on Workbench simulation platform was built and the simulation of arc-trigger under rated current and over current was carried out respectively. A 1 k A prototype was developed for temperature rise test. The experiment results are in good agreement with the simulation result and the temperatures on measure point are precisely calculated. But under the over current situation,an arc has been triggered when current is 1 200 A which indicates that an electromagnetic force must be taken into consideration. The research work is a significant guide to the temperature-rise design of liquid metal arc-trigger.
出处
《电器与能效管理技术》
2017年第5期1-4,14,共5页
Electrical & Energy Management Technology
基金
国家自然科学基金项目(51307179)
海军工程大学自然科学基金项目(435517F21)
关键词
液态金属
触发器
温升特性
故障电流
仿真计算
liquid metal
trigger
temperature-rise characteristics
fault current
simulation calculation
