CAJ | 학술논문

针对高压电动机运行过程中出现的各种电气故障，结合高压电动机保护的现状，设计了一种高压电机微机保护装置。该保护装置以ARM处理器MB9BF618S为控制核心，可以实时检测电动机的工作状态，对高压电动机进行启动超时保护、差动保护、两段式电流保护、三段负序过流保护和过热保护等。叙述了保护装置的总体结构和工作原理，给出了交流插件、CPU插件和信号插件的部分设计方案，分析了差动保护、两段式电流保护、三段负序过流保护的工作特点。该保护装置具有结构简单、操作方便、功能完善、可靠性高等特点，具有较高的应用价值。
침대고압전동궤운행과정중출현적각충전기고장，결합고압전동궤보호적현상，설계료일충고압전궤미궤보호장치。해보호장치이ARM처리기MB9BF618S위공제핵심，가이실시검측전동궤적공작상태，대고압전동궤진행계동초시보호、차동보호、량단식전류보호、삼단부서과류보호화과열보호등。서술료보호장치적총체결구화공작원리，급출료교류삽건、CPU삽건화신호삽건적부분설계방안，분석료차동보호、량단식전류보호、삼단부서과류보호적공작특점。해보호장치구유결구간단、조작방편、공능완선、가고성고등특점，구유교고적응용개치。
A microcomputer protection device for high voltage motor was designed by using the ARM pro-cessor MB9BF618S as the core component which allowed this device to monitor the motor’s operation sta-tus and to provide several kinds of protection services including start-up out-time protection, differential protection, two phase current protection, three phase negative current protection, and overheating protection, etc. The overall structure and operation principle of the device were discussed. Moreover, the design scheme of alternating current ( AC) module, central processing unit ( CPU) module and signal module and the analysis on the working characteristic of differential protection, two phase current protection and three phase negative current protection were also included. With the characteristics of simple structure, easy operation, fully functioned and high reliability, this protection device also had a high application value.