Study on Dynamic Characteristics of Gas Turbine Considering the Influence of Turbine Back Pressure

被引：0
|
作者：
He Y. [1 ]
Li Y. [2 ]
Lin Y. [1 ]
Zhang G. [1 ]
Yang Z. [1 ]
Zhang L. [2 ]
机构：
[1] School of Energy, Power and Mechanical Engineering, North China Electric Power University, Changping District, Beijing
[2] Department of Power Engineering, North China Electric Power University, Hebei Province, Baoding
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2024年 / 44卷 / 08期
关键词：
dynamic model; gas turbine; modular modeling; response characteristic; turbine back pressure;
D O I：
10.13334/j.0258-8013.pcsee.222624
中图分类号：
学科分类号：
摘要：
The back pressure of a gas turbine is one of the important parameters that determine its performance, and it has an undeniable impact on the operational efficiency and safety of the gas turbine. This article adopts a modular modeling method, combined with the control strategy of a gas turbine, to establish a dynamic simulation model of a heavy-duty gas turbine based on a simulation platform. The dynamic characteristics of the unit during the process of turbine back pressure regulation and load fluctuation are studied. The results indicate that the established dynamic model can accurately simulate the dynamic characteristics of heavy-duty gas turbines. The simulation results of different input signals are compared and analyzed to explore the impact of different trends in turbine back pressure on the dynamic characteristics of gas turbines, including the impact of temperature changes at the inlet and outlet of gas turbines under different control strategies on the unit when the back pressure decreases. The differences in dynamic responses of various parameters to disturbances under different control strategies are discovered. The optimization effect of turbine back pressure regulation on the dynamic response characteristics and variable geometry performance of gas turbines has been verified, including the faster response speed and higher stage efficiency of gas turbines under low back pressure. Turbine back pressure regulation can ensure that the turbine inlet and outlet temperature remains close to the target value within a larger load range, thereby facilitating the efficient and stable operation of the unit. © 2024 Chinese Society for Electrical Engineering. All rights reserved.
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页码：3155 / 3164
页数：9
相关论文
共 32 条
  • [1] JIANG Hongde, REN Jing, LI Xueying, Status and development trend of the heavy duty gas turbine [J], Proceedings of the CSEE, 34, 29, pp. 5096-5102, (2014)
  • [2] ZHANG Na, CAI Ruixian, Explicit analytical part-load performance solution of constant speed single shaft gas turbine and its cogeneration [J], Journal of Engineering Thermophysics, 19, 2, pp. 141-144, (1998)
  • [3] YOUNG J B, WILCOCK R C．, Modeling the air-cooled gas turbine：Part 1 — general thermodynamics [J], Journal of Turbomachinery, 124, 2, pp. 207-213, (2002)
  • [4] YOUNG J B, WILCOCK R C．, Modeling the air-cooled gas turbine：Part 2 — coolant flows and losses[J], Journal of Turbomachinery, 124, 2, pp. 214-221, (2002)
  • [5] ZHENG Jiongzhi, ZHANG Guoqiang, Analysis of topping and bottoming cycle parameters on the performance of the combined cycle at design/off-design condition[J], Proceedings of the CSEE, 36, 23, pp. 6418-6431, (2016)
  • [6] ARRIETA F, LORA E E S．, Influence of ambient temperature on combined-cycle power-plant performance [J], Applied Energy, 80, 3, pp. 261-272, (2005)
  • [7] ZHANG Guoqiang, ZHANG Heng, LI Yongyi, Off-design performance optimization of the combined cycle system based on variable back pressure modification[J], Thermal Power Generation, 47, 4, pp. 92-98, (2018)
  • [8] Yongyi LI, ZHANG Guoqiang, BAI Ziwei, Backpressure adjustable gas turbine combined cycle：a method to improve part-load efficiency [J], Energy Conversion and Management, 174, pp. 739-754, (2018)
  • [9] ROWEN W I．, Simplified mathematical representations of heavy-duty gas turbines [J], Journal of Engineering for Power, 105, 4, pp. 865-869, (1983)
  • [10] ROWEN W I, VAN HOUSEN R L．, Gas turbine airflow control for optimum heat recovery [J], Journal of Engineering for Power, 105, 1, pp. 72-79, (1983)
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