600MW机组高压加热器出水温度偏高的原因分析及对策  

Analysis on reason of higher output water temperature of HP heater in 600 MW unit and countermeasures

作　　者：彭博伟[1] 

机构地区：[1]安徽华电宿州发电有限公司,安徽宿州234000

出　　处：《华电技术》2013年第4期5-7,76,共3页HUADIAN TECHNOLOGY

摘　　要：某600 MW超临界机组运行期间,高压加热器出水温度高出设计值很多。从运行系统和测量回路2个方面进行分析,找出温度偏高的原因是热控测量回路的补偿导线与温度元件型号不一致,导致测量值出现偏差。更换温度元件型号后,测量值恢复正常。During running period of a 600 MW supercritical unit,the temperature of output water of the HP heater was much higher than the designed value.The problem was analyzed from the operation system and the measuring circuit,and it was found that the reason of the higher temperature was that the temperature sensing element is not matched with the compensating wire in the measuring circuit,and the measured temperature value was incorrect.The temperature sensing element had been replaced,and the measured temperature became correct.

关 键 词：600MW超临界机组 高压加热器 出水温度 偏高 测量回路 

分 类 号：TM621[电气工程—电力系统及自动化]