再起动电动机群起母线电压校核分析  

Verification and analysis of busbar voltage during motor cluster restart

作　　者：宋文光 展望 SONG Wenguang;ZHAN Wang(Sinopec-SK(Wuhan)Petrochemical Company Limital,Wuhan 430082,China)

机构地区：[1]中韩(武汉)石油化工有限公司,湖北武汉430082

出　　处：《电气应用》2021年第12期34-36,共3页Electrotechnical Application

摘　　要：为防止电气系统"晃电"造成装置生产波动,炼化企业重要电动机一般设有再起动功能。再起动电动机群起时通常会引起母线电压降低。对母线电压的校核可避免备用电源段运行电动机跳闸、再起动电动机起动失败和因电源侧保护动作造成全站停电等问题。通过对炼油厂区新建110 kV变电站再起动时母线电压的校核,估算了35 kV母线允许再起动电动机总容量,为今后新建装置设置再起动电动机提供参考。In refining and chemical factories, vital motors are generally equipped with restart function to prevent voltage sag which cause fluctuation in production. When motor clusters restart in group, it usually causes the busbar voltage to decrease. Verification of bus voltage can avoid the tripping of the operating motor in the standby power supply section, failure of restarting the motor and the whole station power failure caused by protection action. To provide a reference for setting restart motor, this article estimated the total restart motor capacity of 35 kV busbar by verifying the busbar voltage of newly built 110 kV substation during restart.

关 键 词：母线电压 电动机 再起动 校核 

分 类 号：TM63[电气工程—电力系统及自动化] TE96[石油与天然气工程—石油机械设备]