周明辉（北京德威特电力系统自动化有限公司，北京市 101318）

李英武（中国航空工业规划设计研究院，北京市 100011）

Analysis of the Problems Related to Electrical Design of Motor Protection and Control Loop

Zhou Minghui （Beijing Devote Power & Automation Co.，Ltd.，Beijing 101318，China）

Li Yingwu（China Aeronautical Project and Design Institute，Beijing 100011，China）

Abstract The problems related to electrical design of motor protection and control loop are analyzed. The secondary circuit shall be designed according to the requirements of protection and control，and the primary equipments can be adopted on the basis of the start / stop requirement of the motor. For the high-voltage motors that are frequently started and stopped and have forward and reverse rotation requirement，contactor should be adopted for start / stop and should have forward / reverse rotation control.

Key words Motor  Substation Relay protection  Start /stop control Emergency shutdown Forward /reverse rotation control

摘 要 对电动机保护与控制回路电气设计中的有关问题进行了分析。二次电路应根据保护与控制要求来设计，一次设备可根据电动机的启停要求来选择。对于频繁启停以及有正反转要求的高压电动机应采用接触器进行启停及正反转控制。

关键词 电动机 变电站 继电保护 启停控制紧急停车 正反转控制