BEST小汽轮机带小发电机运行控制策略研究与应用  

Research and application of BEST small steam turbine with small generator operation control strategy

作　　者：吴青云 高玉峰[1] 何洋 王海涛[1] 谭祥帅 高奎[1] 何胜 高景辉[1] 孟颖琪[1] 杨博[1] 牛利涛[1] 陈志刚[1] 李华 WU Qingyun;GAO Yufeng;HE Yang;WANG Haitao;TAN Xiangshuai;GAO Kui;HE Sheng;GAO Jinghui;MENG Yingqi;YANG Bo;NIU Litao;CHEN Zhigang;LI Hua(Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an 710054,China;Huaneng Qinmei Ruijin Power Generation Co.,Ltd.,Ganzhou 341000,China)

机构地区：[1]西安热工研究院有限公司,陕西西安710054 [2]华能秦煤瑞金发电有限责任公司,江西赣州341000

出　　处：《热力发电》2024年第3期126-136,共11页Thermal Power Generation

摘　　要：为了满足火电机组启动运行的灵活性、高效性及经济性,将抽汽背压式汽轮机(BEST)小汽轮机带小发电机系统(简称BEST系统)应用于双机回热系统机组,根据BEST系统及机组启动方式,结合调试调整试验的启动运行历史过程及数据,进行BEST系统在多方式启动及运行的特性分析试验,优化现有控制逻辑,提出BEST小汽轮机带小发电机运行控制策略。避免了在BEST系统启动顺控、变流器启停顺控、BEST小汽轮机与变流器的无扰切换、燃煤机组辅机故障减负荷(RB)及甩负荷工况中BEST系统缺乏相应控制策略的问题,实现了BEST系统全过程无断点的运行控制。优化后BEST系统运行过程中重要参数保持安全稳定,该控制方法对具备BEST系统的同类型机组具有重要参考意义。In order to achieve the desired flexibility,high efficiency,and cost-effectiveness in the startup and operation of thermal power units,the utilization of the BEST small steam turbine with a small generator for the implementation of a double-turbine reheat system unit is crucial for enhancing the operational economy of the unit.According to the starting mode of the BEST system and unit,combined with the historical process and data of the starting and operation of the debugging and adjustment test,a characteristic analysis test of the BEST system in multi-mode startup and operation was conducted.The existing control logic was optimized,and an operation control strategy for the BEST small steam turbine with a small generator was proposed.The system addresses the issue of lacking control strategies in various aspects,such as the starting and control of the BEST system,converter start-stop control,BEST small steam turbine and converter non-disturbance switching,run back,load dumping conditions,and ensures uninterrupted operation control of the entire process of the BEST system.After optimization,the crucial parameters of the BEST system remain secure and stable during operation.The control method holds significant reference value for similar units equipped with the BEST system.

关 键 词：双机回热系统机组 抽汽背压式汽轮机 启动及运行 控制策略 

分 类 号：TM621[电气工程—电力系统及自动化] TP273[自动化与计算机技术—检测技术与自动化装置]