Performance Analysis of Solar-Coal Cogeneration System for Wind Power Consumption

doi:10.11930/j.issn.1004-9649.202103062

Abstract

Abstract: During the heating season, the limited peak shaving capacity of CCHP units is blamed as the major cause for the massive abandonment of wind and light in the "Three Norths" area. A mathematical model of key equipments for the solar aided CCHP system is established in this paper. Then a desk-top case of a 600MW direct air-cooled CCHP unit with a 100 MW wind farm, 510,000 m² solar field, and 3-hours storage system is investigated under actual weather conditions and load demands. The simulation results show that, in the heating mode, the lower limit of unit peak shaving can be reduced by 150 MW for wind power consumption so as to promote the integration of large scale wind power into the grid. The annual wind curtailment has dropped from 20 million kW·h by 62.2% to 7 million kW·h, and the wind curtailment rate has dropped from 7.91% to 2.7%. Meanwhile, the annual solar power generation has reached 150 million kW·h, equivalent to a total of 49000 tons of coal saved and 132000 tons of carbon dioxide emissions reduced, which has demonstrated significant environment and economy benefits.

Key words: carbon neutral, wind power consumption, thermoelectric decoupling, solar energy, energy saving and emission reduction

HUANG Chang, YAN Yixian, BAI Yao, ZHANG Qi, WANG Weiliang, LI Wenna. Performance Analysis of Solar-Coal Cogeneration System for Wind Power Consumption[J]. Electric Power, 2022, 55(5): 182-188.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202103062

https://www.electricpower.com.cn/EN/Y2022/V55/I5/182

References

[1] 国家能源局. 国家能源局2021年一季度网上新闻发布会文字实录[EB/OL]. (2021-01-30). [2021-03-01]. http://www.nea.gov.cn/2021-01/30/c_139708580.htm.
[2] 廖明夫, GASCH R, TWELE J, 等. 风力发电技术[M]. 西安: 西安工业大学出版社, 2009.
[3] 刘婧妍. 提升风电消纳能力的热电联合规划方法研究[D]. 哈尔滨: 哈尔滨工业大学, 2017.
LIU Jingyan. Research on method of combined heat and power planning to facilitate the wind power integration[D]. Harbin: Harbin Institute of Technology, 2017.
[4] ZHANG Y N, TANG N N, NIU Y G, et al. Wind energy rejection in China: current status, reasons and perspectives[J]. Renewable and Sustainable Energy Reviews, 2016, 66: 322–344.
[5] LIU M, WANG S, ZHAO Y L, et al. Heat–power decoupling technologies for coal-fired CHP plants: operation flexibility and thermodynamic performance[J]. Energy, 2019, 188: 116074.
[6] 薛朝囡, 杨荣祖, 王汀, 等. 汽轮机高低旁路联合供热在超临界350 MW机组上的应用[J]. 热力发电, 2018, 47(5): 101–105
XUE Zhaonan, YANG Rongzu, WANG Ting, et al. Application of turbine HP-LP bypass system combining with heating in supercritical 350 MW unit[J]. Thermal Power Generation, 2018, 47(5): 101–105
[7] 张虎男, 赵亮, 尹洪超. 350 MW超临界机组高背压供热改造研究及性能分析[J]. 节能, 2018, 37(4): 6–8
ZHANG Hunan, ZHAO Liang, YIN Hongchao. Research and performance analysis on high-back-pressure heating reformation of 350 MW supercritical unit[J]. Energy Conservation, 2018, 37(4): 6–8
[8] 付亚州. 光轴技术在300 MW抽凝式汽轮机组供热改造中的应用探索[J]. 中国设备工程, 2020(7): 121–123
FU Yazhou. The application exploration of optical axis technology in 300 MW condensing steam turbine heat supply reformation[J]. China Plant Engineering, 2020(7): 121–123
[9] 陈建国, 谢争先, 付怀仁, 等. 300 MW机组汽轮机低压缸零出力技术[J]. 热力发电, 2018, 47(5): 106–110
CHEN Jianguo, XIE Zhengxian, FU Huairen, et al. Zero output technology of the low-pressure cylinder of 300 MW unit turbine[J]. Thermal Power Generation, 2018, 47(5): 106–110
[10] 杨志平, 宋四明, 李维, 等. 耦合喷射器热电联产系统设计及运行优化[J]. 中国电机工程学报, 2020, 40(9): 2942-2951.
YANG Zhiping, SONG Siming, LI Wei. et al. Design and operation optimization of combined heat and power system coupling with ejector [J] Proceedings of the CSEE, 2020, 40(9): 2942-2951.
[11] 陈永辉, 李志强, 蒋志庆, 等. 基于电锅炉的火电机组灵活性改造技术研究[J]. 热能动力工程, 2020, 35(1): 261–266
CHEN Yonghui, LI Zhiqiang, JIANG Zhiqing, et al. Research on flexible transformation technology of thermal power unit based on electric boiler[J]. Journal of Engineering for Thermal Energy and Power, 2020, 35(1): 261–266
[12] ZHAO S F, GE Z H, SUN J, et al. Comparative study of flexibility enhancement technologies for the coal-fired combined heat and power plant[J]. Energy Conversion and Management, 2019, 184: 15–23.
[13] FAN M, LIANG H B, YOU S J, et al. Applicability analysis of the solar heating system with parabolic trough solar collectors in different regions of China[J]. Applied Energy, 2018, 221: 100–111.
[14] 李峥嵘, 徐尤锦, 黄俊鹏. 季节蓄热太阳能区域供热的规模化优势[J]. 区域供热, 2017, 5: 29–35
LI Zhengrong, XU Youjin, HUANG Junpeng. Large-scale advantages of seasonal heat storage solar district heating[J]. District Heating, 2017, 5: 29–35
[15] 黄素逸, 黄树红. 太阳能热发电原理及技术[M]. 北京: 中国电力出版社, 2012.
[16] 王志峰. 太阳能热发电站设计[M]. 2版. 北京: 化学工业出版社, 2019.
[17] ZOSCHAK R J, WU S F. Studies of the direct input of solar energy to a fossil-fueled central station steam power plant[J]. Solar Energy, 1975, 17(5): 297–305.
[18] PATNODE A. Simulation and performance evaluation of parabolic trough solar power plants[D]. University of Wisconsin-Madison, 2006.
[19] DUDLEY V, KOLB G, MAHONEY A, et al. Test results SEGS LS-2 solar collector [R]. Office of Scientific and Technical Information (OSTI), 1994.
[20] QUASCHNING V, KISTNER R, ORTMANNS W. Influence of direct normal irradiance variation on the optimal parabolic trough field size: a problem solved with technical and economical simulations[J]. Journal of Solar Energy Engineering, 2002, 124(2): 160–164.
[21] LIPPKE F. Simulation of the part-load behavior of a 30 MWe SEGS plant[R]. 1995.
[22] STODOLA A. Steam and gas turbines: with a supplement on the prospects of the thermal prime mover[M]. Peter Smith, 1945.
[23] HUANG C, HOU H, HU E, et al. Measures to reduce solar energy dumped in a solar aided power generation plant[J]. Applied Energy, 2020, 258: 114106.