摘要
碳刷滑环是发电机组进行正常发电必不可少的一部分,各大电厂在实际生产过程中,对碳刷滑环的运行状况缺少有效的监控措施,在碳刷发生故障时不能提早发现及时处理,继而引起环火或非计划停机事故,给企业带来巨大损失。红外热成像技术具有测温范围广、测温效果直观等优势,近年来在工业领域已得到广泛应用。在发电机碳刷滑环中引入红外热成像技术,利用红外热像仪对碳刷滑环进行24h在线监测,能有效地监控碳刷滑环的运行状况,同时利用碳刷温度数据与励磁电流数据及有功功率数据建立数学模型,分析计算出发电机组在既定负荷下工作时碳刷合理的温度范围,进而对碳刷滑环的运行状况进行超前预判,保障机组的安全运行。
The carbon brush slip ring is an indispensable part of the normal power generation of the generator set.In the actual production process,the major power plants lack effective monitoring measures for the operating status of the carbon brush slip ring.When the carbon brush fails,it cannot be detected and dealt with in time,Which then caused a ring fire or unplanned downtime accidents,causing huge losses to the enterprise.Infrared thermal imaging temperature measurement technology has the advantages of fast response,accurate temperature measurement,long temperature measurement distance,and not affected by light and dust.The introduction of infrared thermal imaging technology into the generator carbon brush slip ring,the use of infrared thermal imaging camera to carry out 24-hour online monitoring of the carbon brush slip ring,which can effectively monitor the operating status of the carbon brush slip ring,and use carbon brush temperature data and excitation The current data and active power data establish a mathematical model,analyze and calculate the reasonable temperature range of the carbon brushes when the generator set is working under a given load,and then pre-judge the operating conditions of the carbon brush slip ring to ensure the safe operation of the unit.
作者
沈琦
刘刚
季学友
潘明泽
Shen Qi;Liu Gang;Ji Xueyou;Pan Mingze(Zhejiang Zheneng Jiahua Power Generation Co.,Ltd.,Zhejiang,Jiaxing,314000,China;Hangzhou Zhongwei Electronic Technology Co.,Ltd.,Hangzhou,310012,China)
出处
《仪器仪表用户》
2021年第6期101-103,5,共4页
Instrumentation
关键词
红外热成像
励磁电流
有功功率
碳刷
滑环
数据库
infrared thermography
excitation current
active power
carbon brush
slip ring
database
