基于快速RMS算法的低压保护器自恢复设计  

Self-restorable design of low voltage protector based on fast RMS algorithm

作　　者：李元熙[1,2] 杨国华[1,2] 邹修国[3] 

机构地区：[1]江苏省无线传感系统应用工程技术研究开发中心,江苏无锡214153 [2]无锡商业职业技术学院物联网技术学院,江苏无锡214153 [3]南京农业大学工学院,江苏南京210031

出　　处：《电子技术应用》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)

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.

关 键 词：自恢复 快速有效值计算 过欠压保护 断路保护器 

分 类 号：TN06[电子电信—物理电子学]