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Transient behavior of the cold end system in an indirect dry cooling thermal power plant under varying operating conditions

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  • Wu, Tao
  • Ge, Zhihua
  • Yang, Lijun
  • Du, Xiaoze

Abstract

In order to reduce the power curtailment of renewable energy, it is essential to improve the dispatchability of thermal power generating unit, among which the dynamic characteristics of the cold end system under varying operating conditions are of significant and necessary. Taking the thermal power plants with indirect dry cooling systems as object, the unsteady models for the dynamic characteristics of cold end were established. The transient behavior under the changing natural crosswind or power load were obtained. Four cooling water adjusting strategies were proposed to compare the standard coal consumptions during operating condition varying. The results indicate that the back pressure and cooling water temperature can change slowly despite of the abruptly change of the natural wind speed and output power load. It takes the cold end longer time to reach another stable state when the natural crosswind speed changes to a bigger value or the output power load decreases in a slower rate. The difference of ambient temperature and natural crosswind speed hardly affects the dynamic behaviors of the cold end system. When the cooling water flow rate is adjusted in the proper way, at most 21.4% more standard coal could be saved during load decreasing processes.

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  • Wu, Tao & Ge, Zhihua & Yang, Lijun & Du, Xiaoze, 2019. "Transient behavior of the cold end system in an indirect dry cooling thermal power plant under varying operating conditions," Energy, Elsevier, vol. 181(C), pages 1202-1212.
    • Handle: RePEc:eee:energy:v:181:y:2019:i:c:p:1202-1212
    DOI: 10.1016/j.energy.2019.06.030
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    1. Wang, Wei & Liu, Jizhen & Zeng, Deliang & Lin, Zhongwei & Cui, Can, 2012. "Variable-speed technology used in power plants for better plant economics and grid stability," Energy, Elsevier, vol. 45(1), pages 588-594.
    2. Zhao, Yongliang & Wang, Chaoyang & Liu, Ming & Chong, Daotong & Yan, Junjie, 2018. "Improving operational flexibility by regulating extraction steam of high-pressure heaters on a 660 MW supercritical coal-fired power plant: A dynamic simulation," Applied Energy, Elsevier, vol. 212(C), pages 1295-1309.
    3. Laskowski, Rafał & Smyk, Adam & Lewandowski, Janusz & Rusowicz, Artur & Grzebielec, Andrzej, 2016. "Selecting the cooling water mass flow rate for a power plant under variable load with entropy generation rate minimization," Energy, Elsevier, vol. 107(C), pages 725-733.
    4. Hentschel, Julia & Zindler, Henning & Spliethoff, Hartmut, 2017. "Modelling and transient simulation of a supercritical coal-fired power plant: Dynamic response to extended secondary control power output," Energy, Elsevier, vol. 137(C), pages 927-940.
    5. Sun, Yubiao & Guan, Zhiqiang & Hooman, Kamel, 2017. "A review on the performance evaluation of natural draft dry cooling towers and possible improvements via inlet air spray cooling," Renewable and Sustainable Energy Reviews, Elsevier, vol. 79(C), pages 618-637.
    6. Wu, Tao & Ge, Zhihua & Yang, Lijun & Du, Xiaoze, 2019. "Modeling the performance of the indirect dry cooling system in a thermal power generating unit under variable ambient conditions," Energy, Elsevier, vol. 169(C), pages 625-636.
    7. Zhao, Yongliang & Liu, Ming & Wang, Chaoyang & Li, Xin & Chong, Daotong & Yan, Junjie, 2018. "Increasing operational flexibility of supercritical coal-fired power plants by regulating thermal system configuration during transient processes," Applied Energy, Elsevier, vol. 228(C), pages 2375-2386.
    8. Wang, Chaoyang & Liu, Ming & Zhao, Yongliang & Qiao, Yongqiang & Chong, Daotong & Yan, Junjie, 2018. "Dynamic modeling and operation optimization for the cold end system of thermal power plants during transient processes," Energy, Elsevier, vol. 145(C), pages 734-746.
    9. Wang, Weiliang & Zhang, Hai & Liu, Pei & Li, Zheng & Lv, Junfu & Ni, Weidou, 2017. "The cooling performance of a natural draft dry cooling tower under crosswind and an enclosure approach to cooling efficiency enhancement," Applied Energy, Elsevier, vol. 186(P3), pages 336-346.
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