The Coordinated Control Strategy for W-Flame Once-Through Boiler and the Optimization for Its Engineering Application

doi:10.11930/j.issn.1004-9649.201812040

Abstract

Abstract: A control system of superior coordinated control quality is vital to the secure, stable and economic operation of a power generation unit and even the electric grid. Taking a 620 MW supercritical unit equipped with double inlet and outlet mills and a W-flame once-through boiler as the study object, a coordinated control strategy based on soft sensing of the feed coal quantity and its engineering application effectiveness are presented. The components of each control loop command in the coordinated control system and the mutual coupling relationship are analyzed in details. According to the test results under actual load fluctuations, the control defects are figured out, and the corresponding optimization scheme is conducted. The results after optimization suggest that the controls over the operating parameters such as the unit load, the main steam pressure and the main steam temperature are in steady state with both the dynamic and static control qualities exceeding the standard requirements.

Key words: coal-fired power plant, supercritical unit, W flame, coordination control system, parameter tuning, engineering application

CLC Number:

TK232

WANG Xihui, CHEN Houtao, ZHU Xiaoxing, WANG Zhijie, SHENG Kai. The Coordinated Control Strategy for W-Flame Once-Through Boiler and the Optimization for Its Engineering Application[J]. Electric Power, 2019, 52(6): 154-159,165.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201812040

https://www.electricpower.com.cn/EN/Y2019/V52/I6/154

References

[1] 陈皓勇, 王晓娟, 蔡永智, 等. 复杂电力(能源)系统的分布式感知与协同估计/检测研究综述[J]. 电力系统保护与控制, 2018, 46(18):1-10 CHEN Haoyong, WANG Xiaojuan, CAI Yongzhi, et al. Distributed sensing and cooperative estimation/detection of complex power/energy and energy systems[J]. Power System Protection and Control, 2018, 46(18):1-10
[2] 王彩霞, 李梓仟, 李琼慧, 等. 丹麦新能源参与电力市场机制及对中国的启示[J]. 中国电力, 2018, 51(9):143-150 WANG Caixia, LI Ziqian, LI Qionghui, et al. Participation mechanism of renewable energy in the electricity market in Denmark and its implications for China[J]. Electric Power, 2018, 51(9):143-150
[3] 张俊, 王飞跃, 林洁瑜. 平行智能与智慧能源:全面融合人因的社会能源技术[J]. 中国电力, 2018, 51(10):26-31 ZHANG Jun, WANG Feiyue, LIN Jieyu. Parallel intelligence and smart energy:social energy technology with human factors incorporated[J]. Electric Power, 2018, 51(10):26-31
[4] 刘吉臻,胡勇,曾德良,等. 智能发电厂的架构及特征[J]. 中国电机工程学报, 2017, 37(22):6463-6470 LIU Jizhen, HU Yong, ZENG Deliang, et al. Architecture and feature of smart power generation[J]. Proceedings of the CSEE, 2017, 37(22):6463-6470
[5] 郭炳庆, 沈瑜, 钟鸣, 等. 电能替代技术应用的商业模式[J]. 中国电力, 2018, 51(9):135-142 GUO Bingqing, SHEN Yu, ZHONG Ming, et al. Business models for promotion of electric power substitution technology[J]. Electric Power, 2018, 51(9):135-142
[6] 李栋, 白智丹, 陈仕军, 等. 电源绿色发展指数研究[J]. 电力建设, 2018, 39(5):123-129 LI Dong, BAI Zhidan, CHEN Shijun, et al. Green development index of power supply[J]. Electric Power Construction, 2018, 39(5):123-129
[7] 杨自娟, 高赐威, 赵明. 电力-天然气网络耦合系统研究综述[J]. 电力系统自动化, 2018, 42(16):21-35, 56 YANG Zijuan, GAO Ciwei, ZHAO Ming. Review of coupled system between power and natural gas network[J]. Automation of Electric Power Systems, 2018, 42(16):21-35, 56
[8] 李军徽, 冯喜超, 严干贵, 等. 高风电渗透率下的电力系统调频研究综述[J]. 电力系统保护与控制, 2018, 46(2):163-170 LI Junhui, FENG Xichao, YAN Gangui, et al. Survey on frequency regulation technology in high wind penetration power system[J]. Power System Protection and Control, 2018, 46(2):163-170
[9] 赵嘉兴,高伟,上官明霞,等. 风电参与电力系统调频综述[J]. 电力系统保护与控制, 2017, 45(21):157-169 ZHAO Jiaxing, GAO Wei, SHANGGUAN Mingxia, et al. Review on frequency regulation technology of power grid by wind farm[J]. Power System Protection and Control, 2017, 45(21):157-169
[10] 刘畅, 耿林霄, 高林, 等. 凝结水变负荷深度调峰技术实现方法及其经济性评价[J]. 热力发电, 2018, 47(5):57-62 LIU Chang, GENG Linxiao, GAO Lin, et al. Realization method and economic evaluation of variable load deep peak regulation technology based on condensate water throttling[J]. Thermal Power Generation, 2018, 47(5):57-62
[11] 许丹, 丁强, 黄国栋, 等. 考虑电网调峰的热电联产热负荷动态调度模型[J]. 电力系统保护与控制, 2017, 45(11):59-64 XU Dan, DING Qiang, HUANG Guodong, et al. Cogeneration unit dynamic scheduling model considering peak-load regulation ability[J]. Power System Protection and Control, 2017, 45(11):59-64
[12] 高林, 李尔堪, 薛建中, 等. 基于凝结水变负荷技术的深度滑压节能控制[J]. 热力发电, 2016, 45(4):121-124 GAO Lin, LI Erkan, XUE Jianzhong, et al. Energy saving automatic control with deeply pressure sliding based on condensate load adjustment technology[J]. Thermal Power Generation, 2016, 45(4):121-124
[13] 郭亦文, 刘茜, 刘畅, 等. 火电机组深度调峰一次调频优化控制策略[J]. 热力发电, 2018, 47(11):135-139 GUO Yiwen, LIU Xi, LIU Chang, et al. Control strategy optimization for primary frequency regulation in depth peak load cycling of thermal power units[J]. Thermal Power Generation, 2018, 47(11):135-139
[14] 廖金龙,陈波,丁宁,等. 大功率机组一次调频参数优化研究[J]. 热力发电, 2018, 47(5):22-28 LIAO Jinlong, CHEN Bo, DING Ning, et al. Research on the optimization of primary frequency modulation parameters of high power units[J]. Thermal Power Generation, 2018, 47(5):22-28
[15] 梅得奇, 李卫华, 王军孝, 等. 600 MW火电机组协调控制策略优化[J]. 热力发电, 2009, 38(5):98-101 MEI Deqi, LI Weihua, WANG Junxiao, et al. The optimization strategy of coordinated control system for 600 MW thermal power plant[J]. Thermal Power Generation, 2009, 38(5):98-101
[16] 邵加晓, 白建云. 模糊自适应免疫非线性PID控制及其在过热蒸汽温度控制中的应用[J]. 热力发电, 2011, 40(6):65-69 SHAO Jiaxiao, BAI Jianyun. Fuzzy adaptive immune nonlinear PID control and its application to superheated temperature control[J]. Thermal Power Generation, 2011, 40(6):65-69
[17] 胡建根, 孙耘, 李泉, 等. 超(超)临界火电机组乘数型协调预测函数优化控制研究及应用[J]. 动力工程学报, 2018, 38(7):552-557 HU Jiangen, SUN Yun, LI Quan, et al. Optimization and application of a multiplier coordinated predictive function control method for (ultra) supercritical thermal power units[J]. Journal of Chinese Society of Power Engineering, 2018, 38(7):552-557
[18] 黄焕袍, 武利强, 韩京清, 等. 火电单元机组协调系统的自抗扰控制方案研究[J]. 中国电机工程学报, 2004, 24(10):168-173 HUANG Huanpao, WU Liqiang, HAN Jingqing, et al. A study of active disturbance control on unit coordinated control system in thermal power plant[J]. Proceedings of the CSEE, 2004, 24(10):168-173
[19] 田亮, 刘芳, 刘鑫屏, 等. 高速率变负荷模式下火电机组协调控制系统参数优化[J]. 系统仿真学报, 2015, 27(7):1532-1540 TIAN Liang, LIU Fang, LIU Xinping, et al. Parameter optimization on coordinated control system of thermal power units in high rate variable load operation mode[J]. Journal of System Simulation, 2015, 27(7):1532-1540
[20] 李泉, 朱北恒, 尹峰, 等. 火电机组协调控制系统优化研究[J]. 热力发电, 2011, 40(6):52-56 LI Quan, ZHU Beiheng, YIN Feng, et al. Study on optimization of coordinated control system for thermal power units[J]. Thermal Power Generation, 2011, 40(6):52-56
[21] 钱朝明, 王会, 吴永存, 等. 1000 MW火电机组协调控制策略优化[J]. 中国电力, 2013, 46(3):69-72 QIAN Chaoming, WANG Hui, WU Yongcun, et al. Optimization of coordinated control strategy for 1000 MW thermal power units[J]. Electric Power, 2013, 46(3):69-72
[22] 王田. 基于RBFPID的火电机组协调主控系统[J]. 热力发电, 2012, 41(4):10-13 WANG Tian. Coordinated main control system of thermal power unit based on RBFPID[J]. Thermal Power Generation, 2012, 41(4):10-13
[23] 国家能源局. 火力发电厂热工自动化系统检修运行维护规程:DL/T 774—2015[S]. National Energy Administration. Overhaul & maintenance code of I&C system in thermal power plant:DL/T 774—2015[S].