摘要
提出了一种具有自恢复能力的机械式低压保护器改进设计。装置采样同一单调区间内的输入电压并利用改进型导数法快速计算出当前有效值,经阈值判断后通过内部电机驱动齿轮组的方式带动机械式保护器实现分合闸操作,并在电压故障排除后自动恢复接通状态。首先介绍了自恢复功能的原理、结构和电路设计,随后分析了快速有效值算法的优缺点并提出了改进方法,最后比较和分析了实验装置在不同电压下断路与恢复的可靠性和有效性。
This article presents an improved design of mechanical low-voltage protector with self-restorable function. Through sam- piing the input voltage in a same monotone interval, calculating current effective values quickly by reformed derivative algorithm and judging with the threshold value, the device uses inner motor to drive gear groups to switch the mechanical protector, besides, when the voltage fault is removed, the device restores the protector in ON state automatically. The article, firstly, introduces the principle, structure and circuit design of self-restorable protector, then analyzes the advantages and disadvantages of fast root mean square（RMS） algorithm and gives some improved method. Finally, experiments compare the data comprehensively under different voltage and analysis in reliability ＆ effectiveness of break protection and recovery function.
出处
《电子技术应用》
北大核心
2017年第3期51-54,共4页
Application of Electronic Technique
基金
江苏省高等学校优秀科技创新团队资助项目(苏教科[2015]4号)
无锡商业职业技术学院科研资助项目(SYKJ16A02)
关键词
自恢复
快速有效值计算
过欠压保护
断路保护器
self-restorable
fast RMS algorithm
over ＆ under voltage protection
circuit break protector
