880MW俄制机组启动问题分析及应对措施研究  

Analysis and Countermeasures Research on Units Start-up Problems of Made 880MW Russian Units

作　　者：闫卫东 赵阳 宋金礼 白永会[3] YAN Weidong;ZHAO Yang;SONG Jinli;BAI Yonghui(Guodian Power Development Co.,Ltd.,Beijing 100101,China;Liaoning Dongke Electric Power Co.,Ltd.,Shenyang,Liaoning 110179,China;Guoneng Power Generation Co.,Ltd.,Huludao,Liaoning 125222,China)

机构地区：[1]国电电力发展股份有限公司,北京100101 [2]辽宁东科电力有限公司,辽宁沈阳110179 [3]国能(绥中)发电有限责任公司,辽宁葫芦岛125222

出　　处：《东北电力技术》2022年第11期26-29,共4页Northeast Electric Power Technology

摘　　要：绥中发电有限责任公司Ⅰ期2×800 MW俄制机组采用超临界压力参数、一次中间再热直流锅炉,为提高机组运行经济性,同时满足环保指标要求,机组进行了一系列技术改造,单机容量增至880 MW。改造后机组启动过程中存在初期启动用蒸汽流量不足、汽温偏斜、干湿态转换时受热面壁温易超温、汽泵并列运行稳定性差等问题。结合机组启动期间运行数据和设备状态,分析问题原因并提出针对性的应对措施,能够较好地缓解以上问题,缩短了机组启动时间,提高了机组运行的安全性和稳定性。Suizhong Power Generation Co.,Ltd.phase I 2×800 MW Russian made units adopt supercritical pressure parameters,primary intermediate reheatonce-through boilers.In order to improve the operation economy of the units and meet the requirements of environmental protection indicators,the units have carried out a series of technical transformation,and the single machine capacity has been increased to 880 MW.During the start-up of the unit after transformation,there are some problems,such as insufficient steam for initial start-up,deviation of steam temperature,easy overheating of heating surface wall temperature during dry and wet state conversion,poor parallel operation stability of steam pumps.Combined with the units operation data and equipments status during start-up,it analyzes the causes of the problems and puts forward targeted countermeasures.It is verified that it can better alleviate the above problems,shorten the units start-up time and improve the safety and stability of the units operation.

关 键 词：机组启动 汽温偏斜 干湿态转换 汽泵并列 

分 类 号：TM621[电气工程—电力系统及自动化]