调峰及低负荷运行对汽机侧设备的影响分析  

Influence Analysis of Peak Load Regulation and Low Load Operation on Turbine Equipment

作　　者：车永强 张彦飞 刘玉智 张杰 公茂雷 CHE Yongqiang;ZHANG Yanfei;LIU Yuzhi;ZHANG Jie;GONG Maolei(State Grid Shandong Electric Power Research Institute,Jinan 250003,China;National Energy Shouguang Power Generation Co.,Ltd.,Shouguang 262714,China;Huaneng Jining Canal Power Generation Co.,Ltd.,Jining 272057,China)

机构地区：[1]国网山东省电力公司电力科学研究院,山东济南250003 [2]国能寿光发电有限责任公司,山东寿光262714 [3]华能济宁运河发电有限公司,山东济宁272057

出　　处：《山东电力技术》2022年第5期13-17,共5页Shandong Electric Power

基　　金：山东电力研究院自主研发项目“核电站常规岛汽轮机技术监督机制及内容研究”(ZY-2020-15)。

摘　　要：随着能源结构的优化调整,煤电机组由电量型电源向调节型电源转变,煤电机组参与调峰的深度和次数日益频繁,这给汽机侧设备带来了很大影响。结合各容量等级机组参与调峰及低负荷运行调研情况,针对调峰及低负荷运行对汽轮机运行、主辅机设备的影响,总结出了普遍存在的问题,如最小流量阀内漏、3号高压加热器疏水不畅、6号低压加热器水位波动、小机排汽温度高、给水泵密封性能差、轴封供汽温度不达标、无旁路机组启动难、转子寿命损耗、末级动叶风险、供热受限制等,并给出了各自的处理措施或建议供参考。With the optimization and adjustment of energy structure,the coal⁃fired power unit has changed from electric power sources to regulated power sources.The depth and frequency of coal⁃fired power unit participating in peak regulation are becoming more and more frequent,which has a great influence on the turbine⁃side equipment.Combined with the investigation of units of various capacity levels participating in peak shaving and low load operation,the impact of peak shaving and low⁃load operation on steam turbine operation and equipment has been summarized as common problems,such as internal leakage of minimum flow valve,poor drainage of No.3 high pressure heater,water level fluctuation of No.6 low pressure heater,high exhaust steam temperature of small turbine,poor sealing performance of feed pump,unqualified shaft seal steam supply temperature,difficult to start without bypass,loss of rotor life,risk of last stage moving blade,limited heat supply,etc.,and the respective treatment measures or suggestions are given for reference.

关 键 词：煤电机组 深度调峰 启停调峰 低负荷运行 影响分析 

分 类 号：TK11[动力工程及工程热物理—热能工程]