凝结水节流快速变负荷与自恢复控制
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摘要
为提升燃煤发电机组的快速变负荷能力,进而支撑中国规模化新能源电力的并网与安全运行,通过凝结水节流的快速变负荷与自恢复控制,实现了凝结水节流与传统协调控制的有机结合。基于机理分析与试验曲线辨识建立了凝结水节流调节的动态微增功率模型,给出了机组含凝结水节流调节的三入两出非线性控制模型;设计了一种融合凝结水节流调节与传统协调控制的新型变负荷控制策略,克服了凝结水节流对除氧器和凝汽器热井水位的影响;同时显著提升了机组的变负荷性能。在某300 MW机组上的仿真验证表明,所提控制策略显著改善了机组的变负荷性能,对于响应电网侧的一次调频具有重要意义。
In order to improve the load change capability for the large-scale integration and safe operation of renewable energies,condensate throttling was combined with traditional boiler-turbine coordinated control by the rapid load control and self-recovery control of condensate throttling. The dynamic incremental power model of condensate throttling was set up based on mechanism analysis and data identification,and the unit nonlinear control model with 3 inputs and 2 outputs considering condensate throttling regulation was further developed. A novel load-change control strategy combining condensate throttling and boiler-turbine coordinated control was designed,which overcomed the influence of condensate throttling on water levels of deaerator and hot well,and meanwhile improved the load following capability. Finally,a test on a 300 MW power unit proved that our strategy improves the load-change performance,which is with great significance to the primary frequency control of power grid.
In order to improve the load change capability for the large-scale integration and safe operation of renewable energies,condensate throttling was combined with traditional boiler-turbine coordinated control by the rapid load control and self-recovery control of condensate throttling. The dynamic incremental power model of condensate throttling was set up based on mechanism analysis and data identification,and the unit nonlinear control model with 3 inputs and 2 outputs considering condensate throttling regulation was further developed. A novel load-change control strategy combining condensate throttling and boiler-turbine coordinated control was designed,which overcomed the influence of condensate throttling on water levels of deaerator and hot well,and meanwhile improved the load following capability. Finally,a test on a 300 MW power unit proved that our strategy improves the load-change performance,which is with great significance to the primary frequency control of power grid.
引文
1刘吉臻.大规模新能源电力安全高效利用基础问题[J].中国电机工程学报,2013,33(16):1-8Liu Jizhen.Basic issues of the utilization of large-scale renewable power with high security and efficiency[J].Proceedings of the CSEE,2013,33(16):1-8
2王立军,李晓敏.“两个细则”条件下的超临界机组AGC协调控制优化[J].现代电力,2011,28(2):84-89Wang Lijun,Li Xiaomin.The optimization of coordinated control system under agc mode for supercritical generation unit based on“two documents”[J].Modern Electric Power,2011,28(2):84-89
3田雄,姚建刚,龚陈雄,等.电厂并网运行管理及辅助服务管理系统的研发[J].电力系统保护与控制,2011,39(1):118-122Tian Xiong,Yao Jiangang,Gong Chenxiong,et al.Research and design of grid parallel operation and auxiliary services management system[J].Power System Protection and Control,2011,39(1):118-122
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5李付强,王彬,涂少良,等.京津唐电网风力发电并网调峰特性分析[J].电网技术,2009(18):128-132Li Fuqiang,Wang Bin,Tu Shaoliang,et al.Analysis on peak load regulation performance of Beijing-Tianjin-Tangshan power grid with wind farms connected[J].Power System Technology,2009(18):128-132
6徐晨光,赵麦换,黄强.基于自组织进化规划的径流式水电站厂内经济运行算法[J].水利水电技术,2005,36(3):55-57Xu Chenguang,Zhao Maihuan,Huang Qiang.Economic operation algorithm based on self-organization evolutionary programming forrunof-river hydropower station[J].Water Resources and Hydropower Engineering,2005,36(3):55-57
7杨水丽,李建林,李蓓,等.电池储能系统参与电网调频的优势分析[J].电网与清洁能源,2013,29(2):43-47Yang Shuili,Li Jianlin,Li Bei,et al.Advantages of battery energy storage system for frequency regulation[J].Power System and Clean Energy,2013,29(2):43-47
8王文兰,张嘉英,张丽萍.火电机组协调控制系统的解耦广义预测控制研究[J].热力发电,2010,39(1):25-28Wang Wenlan,Zhang Jiaying,Zhang Liping.Study on generalized prediction control with decoupling of coordinated control system[J].Thermal Power Generation,2010,39(1):25-28
9田靖雨,王印松,李士哲,等.基于协方差指标的火电机组协调控制系统性能模糊评价方法[J].热力发电,2016,45(2):47-51Tian Jingyu,Wang Yinsong,Li Shizhe,et al.Fuzzy assessment of performance of coordinated control system in thermal power unit based on covariance index[J].Thermal Power Generation,2016,45(2):47-51
10郑亚锋,陈西杰.多变量智能协调控制系统设计应用[J].电力系统及其自动化学报,2011,23(1):145-148Zheng Yafeng,Chen Xijie.Design application of multivariable intelligent coordinated control system[J].Proceedings of the Chinese Society of Universities for Electric Power System and its Automation,2011,23(1):145-148
11席嫣娜,王印松.一种基于自适应反演算法的火电单元机组协调控制策略[J].中国电机工程学报,2018,38(7):2070-2081Xi Yanna,Wang Yinsong.A coordinated control strategy for thermal power generation units based on the adaptive backstepping method[J].Proceedings of the CSEE,2018,38(7):2070-2081
12 Lausterer G K.Improved maneuverability of power plants for better grid stability[J].Control Engineering Practice,1998,6(12):1549-1557
13姚峻,陈维和.900 MW超临界机组一次调频试验研究[J].华东电力,2006,34(8):84-87Yao Jun,Chen Weihe.Experimental study of primary frequency regulation for 900 MW supercritical units[J].East China Electric Power,2006,34(8):84-87
14刘鑫屏,田亮,曾德良,等.凝结水节流参与机组负荷调节过程建模与分析[J].华北电力大学学报(自然科学版),2009,36(2):80-84Liu Xinping,Tian Liang,Zeng Deliang,et al.Modeling and analysis for the units load regulation by condensate throttling[J].Journal of North China Electric Power University(Natural Science Edition),2009,36(2):80-84
15王玮,刘吉臻,曾德良,等.凝结水节流变负荷能力静态建模与分析[J].动力工程学报,2015,35(9):740-745Wang Wei,Liu Jizhen,Zeng Deliang,et al.Static modelling and analysis on load change capability of condensate throttling[J].Journal of Chinese Society of Power Engineering,2015,35(9):740-745
16 Hu Y,Zeng D L,Liu J Z,et al.Dynamic model for controller design of condensate throttling systems[J].ISA Transactions,2015,58:622-628
17刘芳,田亮.凝结水节流参与机组发电负荷双重控制方案[J].华北电力大学学报(自然科学版),2014,41(2):66-71Liu Fang,Tian Liang.Dual control strategy of the units load regulation by condensate throttling[J].Journal of North China Electric Power University(Natural Science Edition),2014,41(2):66-71
18刘吉臻,王耀函,曾德良,等.基于凝结水节流的火电机组AGC控制优化方法[J].中国电机工程学报,2017,37(23):6918-6925Liu Jizhen,Wang Yaohan,Zeng Deliang,et al.An agc control method of thermal unit based on condensate throttling[J].Proceedings of the CSEE,2017,37(23):6918-6925
19龙东腾,王玮,刘吉臻.凝结水节流参与的1 000 MW火电机组快速变负荷调节[J].动力工程学报,2017,37(3):249-256Long Dongteng,Wang Wei,Liu Jizhen.Fast load regulation of1 000 MW thermal power unit by condensate throttling[J].Journal of Chinese Society of Power Engineering,2017,37(3):249-256
20杨巍,龙东腾,牛玉广.基于凝结水节流串级控制的新型协调控制[J].热力发电,2017,46(4):125-131Yang Wei,Long Dongteng,Niu Yuguang.A novel coordinated control strategy based on condensate throttling cascade control[J].Thermal Power Generation,2017,46(4):125-131
21项丹,刘吉臻,李露.基于多变量解耦内模控制的机组协调控制系统设计[J].热力发电,2015(2):69-73Xiang Dan,Liu Jizhen,Li Lu.Design of unit coordinated control system based on multivariable decoupling IMC[J].Thermal Power Generation,2015(2):69-73
2王立军,李晓敏.“两个细则”条件下的超临界机组AGC协调控制优化[J].现代电力,2011,28(2):84-89Wang Lijun,Li Xiaomin.The optimization of coordinated control system under agc mode for supercritical generation unit based on“two documents”[J].Modern Electric Power,2011,28(2):84-89
3田雄,姚建刚,龚陈雄,等.电厂并网运行管理及辅助服务管理系统的研发[J].电力系统保护与控制,2011,39(1):118-122Tian Xiong,Yao Jiangang,Gong Chenxiong,et al.Research and design of grid parallel operation and auxiliary services management system[J].Power System Protection and Control,2011,39(1):118-122
4白成春,焦莉,朱泽,等.西北电网一次调频试验分析[J].中国电力,2008,41(6):14-18Bai Chengchun,Jiao Li,Zhu Ze,et al.Research on primary frequency field test in Northwest China Power Grid[J].Electric Power,2008,41(6):14-18
5李付强,王彬,涂少良,等.京津唐电网风力发电并网调峰特性分析[J].电网技术,2009(18):128-132Li Fuqiang,Wang Bin,Tu Shaoliang,et al.Analysis on peak load regulation performance of Beijing-Tianjin-Tangshan power grid with wind farms connected[J].Power System Technology,2009(18):128-132
6徐晨光,赵麦换,黄强.基于自组织进化规划的径流式水电站厂内经济运行算法[J].水利水电技术,2005,36(3):55-57Xu Chenguang,Zhao Maihuan,Huang Qiang.Economic operation algorithm based on self-organization evolutionary programming forrunof-river hydropower station[J].Water Resources and Hydropower Engineering,2005,36(3):55-57
7杨水丽,李建林,李蓓,等.电池储能系统参与电网调频的优势分析[J].电网与清洁能源,2013,29(2):43-47Yang Shuili,Li Jianlin,Li Bei,et al.Advantages of battery energy storage system for frequency regulation[J].Power System and Clean Energy,2013,29(2):43-47
8王文兰,张嘉英,张丽萍.火电机组协调控制系统的解耦广义预测控制研究[J].热力发电,2010,39(1):25-28Wang Wenlan,Zhang Jiaying,Zhang Liping.Study on generalized prediction control with decoupling of coordinated control system[J].Thermal Power Generation,2010,39(1):25-28
9田靖雨,王印松,李士哲,等.基于协方差指标的火电机组协调控制系统性能模糊评价方法[J].热力发电,2016,45(2):47-51Tian Jingyu,Wang Yinsong,Li Shizhe,et al.Fuzzy assessment of performance of coordinated control system in thermal power unit based on covariance index[J].Thermal Power Generation,2016,45(2):47-51
10郑亚锋,陈西杰.多变量智能协调控制系统设计应用[J].电力系统及其自动化学报,2011,23(1):145-148Zheng Yafeng,Chen Xijie.Design application of multivariable intelligent coordinated control system[J].Proceedings of the Chinese Society of Universities for Electric Power System and its Automation,2011,23(1):145-148
11席嫣娜,王印松.一种基于自适应反演算法的火电单元机组协调控制策略[J].中国电机工程学报,2018,38(7):2070-2081Xi Yanna,Wang Yinsong.A coordinated control strategy for thermal power generation units based on the adaptive backstepping method[J].Proceedings of the CSEE,2018,38(7):2070-2081
12 Lausterer G K.Improved maneuverability of power plants for better grid stability[J].Control Engineering Practice,1998,6(12):1549-1557
13姚峻,陈维和.900 MW超临界机组一次调频试验研究[J].华东电力,2006,34(8):84-87Yao Jun,Chen Weihe.Experimental study of primary frequency regulation for 900 MW supercritical units[J].East China Electric Power,2006,34(8):84-87
14刘鑫屏,田亮,曾德良,等.凝结水节流参与机组负荷调节过程建模与分析[J].华北电力大学学报(自然科学版),2009,36(2):80-84Liu Xinping,Tian Liang,Zeng Deliang,et al.Modeling and analysis for the units load regulation by condensate throttling[J].Journal of North China Electric Power University(Natural Science Edition),2009,36(2):80-84
15王玮,刘吉臻,曾德良,等.凝结水节流变负荷能力静态建模与分析[J].动力工程学报,2015,35(9):740-745Wang Wei,Liu Jizhen,Zeng Deliang,et al.Static modelling and analysis on load change capability of condensate throttling[J].Journal of Chinese Society of Power Engineering,2015,35(9):740-745
16 Hu Y,Zeng D L,Liu J Z,et al.Dynamic model for controller design of condensate throttling systems[J].ISA Transactions,2015,58:622-628
17刘芳,田亮.凝结水节流参与机组发电负荷双重控制方案[J].华北电力大学学报(自然科学版),2014,41(2):66-71Liu Fang,Tian Liang.Dual control strategy of the units load regulation by condensate throttling[J].Journal of North China Electric Power University(Natural Science Edition),2014,41(2):66-71
18刘吉臻,王耀函,曾德良,等.基于凝结水节流的火电机组AGC控制优化方法[J].中国电机工程学报,2017,37(23):6918-6925Liu Jizhen,Wang Yaohan,Zeng Deliang,et al.An agc control method of thermal unit based on condensate throttling[J].Proceedings of the CSEE,2017,37(23):6918-6925
19龙东腾,王玮,刘吉臻.凝结水节流参与的1 000 MW火电机组快速变负荷调节[J].动力工程学报,2017,37(3):249-256Long Dongteng,Wang Wei,Liu Jizhen.Fast load regulation of1 000 MW thermal power unit by condensate throttling[J].Journal of Chinese Society of Power Engineering,2017,37(3):249-256
20杨巍,龙东腾,牛玉广.基于凝结水节流串级控制的新型协调控制[J].热力发电,2017,46(4):125-131Yang Wei,Long Dongteng,Niu Yuguang.A novel coordinated control strategy based on condensate throttling cascade control[J].Thermal Power Generation,2017,46(4):125-131
21项丹,刘吉臻,李露.基于多变量解耦内模控制的机组协调控制系统设计[J].热力发电,2015(2):69-73Xiang Dan,Liu Jizhen,Li Lu.Design of unit coordinated control system based on multivariable decoupling IMC[J].Thermal Power Generation,2015(2):69-73
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