吴青云,高玉峰,何洋,王海涛,谭祥帅,高奎,何胜,高景辉,孟颖琪,杨博,牛利涛,陈志刚,李华

• 1:西安热工研究院有限公司
• 2:华能秦煤瑞金发电有限责任公司

摘要(Abstract)：

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。

关键词(KeyWords)： 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

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 吴青云,高玉峰,何洋,王海涛,谭祥帅,高奎,何胜,高景辉,孟颖琪,杨博,牛利涛,陈志刚,李华

DOI: 10.19666/j.rlfd.202308120

参考文献(References)：

• [1]俞基安,刘鹤忠,吴焕琪,等.我国高效灵活二次再热发电机组研制及工程示范[J].中国电机工程学报,2019, 39(增刊1):193-202.YU Ji’an, LIU Hezhong, WU Huanqi, et al.Development and engineering demonstration of high efficiency and flexible double-reheat generators in China[J]. Proce-edings of the CSEE, 2019, 39(Suppl.1):193-202.
• [2]段立强,孙婧,王振.二次再热机组不同抽汽过热度热能利用方案性能比较[J].工程热物理学报, 2019,40(12):2757-2762.DUAN Liqiang, SUN Jing, WANG Zhen. Performance comparison of thermal energy utilization schemes of extractions superheating degree for a double reheat coal-fired power plant[J]. Journal of Engineering Thermophysics, 2019, 40(12):2757-2762.
• [3]张晓东,翟璇,张顺奇,等.集成抽汽背压式给水泵汽轮机的发电系统瞬态特性及控制优化研究[J].西安交通大学学报, 2020, 54(12):98-105.ZHANG Xiaodong, ZHAI Xuan, ZHANG Shunqi, et al.Transient characteristics and control optimization for power system of steam turbine integrated with back pressure extraction pump[J]. Journal of Xi’an Jiaotong University, 2020, 54(12):98-105.
• [4]李冰天. 1 000 MW超超临界EC-BEST二次再热机组经济性分析[J].热能动力工程, 2018, 33(11):36-41.LI Bingtian. Economic analysis of 1 000 MW ultra supercritical EC-BEST secondary reheat unit[J]. Journal of Engineering for Thermal Energy and Power, 2018,33(11):36-41.
• [5]王渡,陈豪,魏佳倩,等. 1 000 MW机组不同BEST级数下变工况回热特性研究[J].热能动力工程, 2022,37(1):34-40.WANG Du, CHEN Hao, WEI Jiaqian, et al. Research on regenerative characteristics of 1 000 MW units at different BEST stages under variable operating conditions[J]. Journal of Engineering for Thermal Energy and Power, 2022, 37(1):34-40.
• [6]邓攀,王亚军. BEST技术用于超超临界二次再热机组的可行性分析[J].中国电力, 2018, 51(7):84-89.DENG Pan, WANG Yajun. Feasibility analysis on BEST technology for ultra supercritical units with doublereheat cycle[J]. Electric Power, 2018, 51(7):84-89.
• [7]朱朝阳. BEST热力系统焓升分配和再热蒸汽压力优化[J].热力发电, 2017, 46(4):88-92.ZHU Chaoyang. Enthalpy rise distribution and optimization of reheat steam pressure for BEST system[J]. Thermal Power Generation, 2017, 46(4):88-92.
• [8]赵宇珉,罗建松,高宇,等. BEST双机回热系统标准煤耗率计算[J].电力勘测设计, 2023(3):61-64.ZHAO Yumin, LUO Jiansong, GAO Yu, et al.Calculation of standard coal consumption rate of BEST double-turbine regeneration system[J]. Electric Power Survey&Design, 2023(3):61-64.
• [9]王雅倩,付亦葳,张泽雄,等. BEST系统变工况特性及控制方式研究[J].热能动力工程, 2019, 34(5):42-48.WANG Yaqian, FU Yiwei, ZHANG Zexiong, et al. Study on the off-design characteristics and control methods of BEST systems[J]. Journal of Engineering for Thermal Energy and Power, 2019, 34(5):42-48.
• [10]付亦葳,谢天,刘永林,等. BEST系统与常规系统的对比研究[J].热能动力工程, 2017, 32(7):9-16.FU Yiwei, XIE Tian, LIU Yonglin, et al. Comparative study of BEST system and conventional system[J].Journal of Engineering for Thermal Energy and Power,2017, 32(7):9-16.
• [11]赵海洋,郝震震.泵电双驱双机回热小汽轮机结构设计介绍[J].热力透平, 2023, 52(2):105-109.ZHAO Haiyang, HAO Zhenzhen. Structure design of pump generator dual drive echelon cycle backpressure extraction steam turbine[J]. Thermal Turbine, 2023,52(2):105-109.
• [12]蔺奕存,普建国,高景辉,等.变流器在抽汽背压式给水泵汽轮机系统中的应用研究[J].热力发电, 2022,51(4):179-187.LIN Yicun, PU Jianguo, GAO Jinghui, et al. Application research of converter in back pressure extraction steam turbine in feed water system[J]. Thermal Power Generation, 2022, 51(4):179-187.
• [13]程辉.超超临界二次再热1 000 MW机组回热系统优化[J].能源科技, 2020, 18(2):47-50.CHENG Hui. Optimization of regenerative system of1 000 MW ultra supercritical double reheat unit[J].Energy Science and Technology, 2020, 18(2):47-50.
• [14]孙德创,周雅君,郜玉森.超超临界二次再热双机回热机组回热系统优化研究[J].电站系统工程, 2021,37(3):42-44.SUN Dechuang, ZHOU Yajun, GAO Yusen.Optimization research of regenerative system on ultra supercritical double reheat double turbine unit[J]. Power System Engineering, 2021, 37(3):42-44.
• [15]高奎,谭祥帅,郭三虎,等.超超临界机组辅机故障减负荷过程重要运行参数控制优化[J].热力发电, 2021,50(7):91-99.GAO Kui, TAN Xiangshuai, GUO Sanhu, et al. Control and optimization of important operation parameters in RB process of ultra supercritical units[J]. Thermal Power Generation, 2021, 50(7):91-99.
• [16]罗方,宋风强,侯明军,等.超临界再热型双抽背压式汽轮机运行策略[J].东方电气评论, 2021, 35(1):40-44.LUO Fang, SONG Fengqiang, HOU Mingjun, et al. The operation strategy of supercritical reheating double extracting back-pressure turbine[J]. Dongfang Electric Review, 2021, 35(1):40-44.
• [17]蔺奕存,伍刚,张明理,等.抽汽背压式汽轮机回热系统投运方式对其运行影响的研究[J].发电设备, 2022,36(6):377-381.LIN Yicun, WU Gang, ZHANG Mingli, et al. Research on the influence of BEST regenerative system commissioning method on its operation[J]. Power Equipment, 2022, 36(6):377-381.
• [18]罗建松,秦宇,钟志强,等.带变频发电机的BEST小机驱动给水泵技术研究[J].电力勘测设计, 2022(12):45-50.LUO Jiansong, QIN Yu, ZHONG Zhiqiang, et al.BEST-turbine driven feedwater pump technology with variable frequency generator[J]. Electric Power Survey&Design, 2022(12):45-50.
• [19]房吉国,杨国强,王开晶.二次再热机组双机回热系统运行控制策略[J].现代信息科技, 2020, 4(1):31-33.FANG Jiguo, YANG Guoqiang, WANG Kaijing.Operation control strategy of double-turbine regeneration system in double-reheat unit[J]. Modern Information Technology, 2020, 4(1):31-33.
• [20]杨义,郑莆燕,齐同磊,等.二次再热机组烟气余热利用与抽汽参数优化研究[J].上海电力大学学报, 2021,37(1):5-10.YANG Yi, ZHENG Puyan, QI Tonglei, et al.Optimization study on utilizing waste heat of flue gas and extraction parameters for secondary reheat unit[J].Journal of Shanghai University of Electric Power, 2021,37(1):5-10.
• [21]王婧,杨金福,段立强,等.高参数超超临界燃煤机组汽轮机热力系统优化设计[J].发电技术, 2021, 42(4):480-488.WANG Jing, YANG Jinfu, DUAN Liqiang, et al.Optimal design of steam turbine system for advanced ultra-supercritical double reheat coal-fired units[J].Power Generation Technology, 2021, 42(4):480-488.
• [22]高展羽,王建伟,雷晓龙.回热驱动式小汽轮机启动运行方案探讨[J].东方汽轮机, 2019(3):50-54.GAO Zhanyu, WANG Jianwei, LEI Xiaolong.Discussion on starting operation scheme of regenerative drive type steam turbine[J]. Dongfang Turbine, 2019(3):50-54.
• [23]余兴刚,陈非,李旭,等.回热系统运行状况对机组热经济性影响的定量分析[J].汽轮机技术, 2021, 63(1):49-52.YU Xinggang, CHEN Fei, LI Xu, et al. Quantitative analysis of influence of regenerative system operating condition on the thermal economy of unit[J]. Turbine Technology, 2021, 63(1):49-52.
• [24]金亚飞,王渡,魏佳倩.基于BEST的1 000 MW二次再热机组低压加热器疏水系统优化研究[J].上海电力大学学报, 2023, 39(2):131-136.JIN Yafei, WANG Du, WEI Jiaqian. Optimization of low-plus hydrophobic system based on BEST 1 000 MW secondary reheat unit[J]. Journal of Shanghai University of Electric Power, 2023, 39(2):131-136.
• [25]王渡,魏佳倩,陈豪,等.基于BEST系统超超临界1 000 MW二次再热蒸汽机组的参数选取[J].锅炉技术, 2023, 54(2):21-25.WANG Du, WEI Jiaqian, CHEN Hao, et al. Parameter selection of ultra-supercritical 1 000 MW double reheat cycle unit based on BEST system[J]. Boiler Technology,2023, 54(2):21-25.
• [26]李平,雷红卫,陈欣,等.基于背压汽轮机的蒸汽电站回热系统节能增效[J].智慧电力, 2015, 43(2):80-83.LI Ping, LEI Hongwei, CHEN Xin, et al. Back-pressure steam turbine-based energy saving and efficiency improvement for steam electric station regeneration system[J]. Smart Power, 2015, 43(2):80-83.
• [27]樊羊羊,何平,张众志.基于粒子群算法的二次再热机组过热度利用研究[J].能源研究与利用, 2018(1):24-27.FAN Yangyang, HE Ping, ZHANG Zhongzhi. Research on superheat utilization of secondary reheating unit based on particle swarm algorithm[J]. Energy Research&Utilization, 2018(1):24-27.
• [28]王婧,段立强,杨金福,等.集成BEST的700℃一次再热超超临界机组回热系统节能优化[J].动力工程学报, 2022, 42(7):632-641.WANG Jing, DUAN Liqiang, YANG Jinfu, et al. Energy saving optimization study on regenerative systems of700℃single reheat ultra-supercritical unit with BEST[J]. Journal of Chinese Society of Power Engineering, 2022, 42(7):632-641.
• [29]高奎,杜亚鸿,赵晖,等.深度调峰机组给水泵再循环控制优化调整[J].热力发电, 2020, 49(11):101-106.GAO Kui, DU Yahong, ZHAO Hui, et al. Optimization and adjustment of recirculation control of feed pump in deep peak load regulation unit[J]. Thermal Power Generation, 2020, 49(11):101-106.
• [30]马飞.双机回热系统现场运行经验[J].热力透平,2022, 51(3):219-224.MA Fei. Operation experience of echelon cyclebackpressure extraction steam turbine system[J].Thermal Turbine, 2022, 51(3):219-224.
• [31]林侃,梁石,刘宇穗,等.双机回热系统小汽机仪控设计及控制策略研究[J].南方能源建设, 2021, 8(4):66-72.LIN Kan, LIANG Shi, LIU Yusui, et al. Research on instrument and control design and control strategy for small steam turbine in double-turbine regeneration system[J]. Southern Energy Construction, 2021, 8(4):66-72.
• [32]车洵,朱旻昊,曹勤,等.新型节能背压式汽轮机研究[J].热力透平, 2016, 45(1):33-36.CHE Xun, ZHU Minhao, CAO Qin, et al. Research on new type of energy-saving steam turbine with back pressure[J]. Thermal Turbine, 2016, 45(1):33-36.