Study on Effect of Neglecting Transient Terms of Momentum Equations on Simulation Models of Single Phase Heated Tubes

doi:10.16182/j.issn1004731x.joss.201705014

Abstract

Abstract: A model of single phase heated tubes was presented, based on which the effect of neglecting transient terms of momentum equations on model performance was investigated by simulating a heated tube of the superheater of a power plant boiler. It is found that neglecting the transient terms of momentum equations can significantly decrease the dynamic accuracy of the model; under various step disturbances, neglecting the transient terms of momentum equations can speed up the dynamic response of the enthalpy-temperature channel of the model nearly 4 times; under the step disturbance of the inlet steam flux, neglecting the transient terms of momentum equations can change the type of dynamic characteristics of the pressure-flow channel of the model; whereas the corresponding decrease of computational consuming time is less than 7%; moreover, the ability to keep numerically stable also decreases.

Key words: single phase heated tube, superheater, simulation model, momentum equation, transient term

CLC Number:

TK223.3

Kang Yingwei, Wang Yanan, Peng Daogang, Zheng Pengyuan, Yang Ping. Study on Effect of Neglecting Transient Terms of Momentum Equations on Simulation Models of Single Phase Heated Tubes[J]. Journal of System Simulation, 2017, 29(5): 1033-1040.

References

[1] 吕崇德, 范永胜, 蔡瑞忠. 我国电站仿真技术进展与建模理论研究[J]. 中国工程科学, 1999, 1(1): 99-103.
(Lv C, Fan Y, Cai R.Development of Simulation Technologies and Researches of Modeling Theory for Power Plant in China[J]. Engineering Sciences (S1009-1742), 1999, 1(1): 99-103.)
[2] 郑建学, 陈听宽, 陈学俊, 等. 单相受热管动力学模型[J]. 力学进展, 1997, 27(4): 538-548.
(Zheng J, Chen T, Chen X, et al.Dynamic Thermal-Hydraulic Models for Single-Phase Heated Tubes[J]. Advances in Mechanics (S1000-0992), 1997, 27(4): 538-548.)
[3] 韩璞, 刘长良, 李长青. 火电站仿真机原理及应用 [M]. 天津: 天津科学技术出版社, 1998.
(Han P, Liu C, Li C.Principles and Applications of Simulators for Fossil Fueled Power Plants [M]. Tianjin, China: Tianjin Science and Technology Press, 1998.)
[4] 吕崇德, 任挺进, 姜学智, 等. 大型火电机组系统仿真与建模 [M]. 北京: 清华大学出版社, 2002.
(Lv C, Ren T, Jiang X, et al.Simulation and Modeling of Large Scale Fossil Fueled Generator Unit Systems [M]. Beijing, China: Tsinghua University Press, 2002.)
[5] Enns M.Comparison of dynamic models of a superheater[J]. Journal of Heat Transfer of the ASME (S0022-1481), 1962, 84(9): 375-385.
[6] 章臣樾. 锅炉动态特性及其数学模型 [M]. 北京: 水利电力出版社, 1987.
(Zhang C.Boiler Dynamic Characteristics and Mathematical Models [M]. Beijing, China: Hydraulic and Electric Power Press, 1987.)
[7] de Mello F P. Boiler models for system dynamic performance studies[J]. IEEE Transactions on Power Systems (S0885-8950), 1991, 6(1): 66-74.
[8] 吕子安, 李天铎. 单相介质受热管集中参数模型建模方法的改进[J]. 系统仿真学报, 1993, 5(1): 1-8, 14.
(Lv Z, Li T.The improved lumped parameter model of monophase fluid heated tubes[J]. Journal of System Simulation (S1004-731X), 1993, 5(1): 1-8, 14.)
[9] Paranjape R D.Modeling and control of a supercritical coal fired boiler [D]. USA: Texas Tech University, 1996.
[10] 范永胜, 眭喆, 姜学智, 等. 一种高精度的锅炉单相区段集总参数动态修正模型[J]. 中国电机工程学报, 2000, 20(1): 50-54.
(Fan Y, Sui Z, Jiang X, et al.A High-Precision Modified Lumped-Parameter Dynamic Model Applied to Uniphase Boiler Sections[J]. Proceedings of the CSEE (S0258-8013), 2000, 20(1): 50-54.)
[11] Liu C, Liu J.Nonlinear boiler model of 300 MW power unit for system dynamic performance studies[C]// 2001 IEEE International Symposium on Industrial Electronics Proceedings, Pusan, Korea. USAl: 2001: 1296-1300.
[12] 李运泽, 杨献勇. 超临界直流锅炉长期动态特性的建模与仿真[J]. 热能动力工程, 2003, 18(1): 23-26.
(Li Y, Yang X.Modeling and Simulation of the Long-term Dynamic Characteristics of a Superctritical Once-through Boiler[J]. Journal of Engineering for Thermal Energy and Power (S1001-2060), 2003, 18(1): 23-26.)
[13] 杨勇平, 郭喜燕, 宋之平, 等. 单相工质汽温动态过程的一种新的快速求解法[J]. 中国电机工程学报, 2005, 25(3): 158-162.
(Yang Y, Guo X, Song Z, et al.A New Fast Solution Method for Dynamic Process of Single-Phase Medium's Temperature[J]. Proceedings of the CSEE (S0258-8013), 2005, 25(3): 158-162.)
[14] 刘树清, 余圣方, 周龙. 900 MW超临界直流锅炉的数学模型与仿真研究[J]. 计算机仿真, 2005, 22(10): 215-218.
(Liu S, Yu S, Zhou L.Mathematical Model and Simulation of 900 MW Supercritical Once-through Boiler[J]. Computer Simulation (S1006-9348), 2005, 22(10): 215-218.)
[15] 卓旭升, 周怀春, 文忠林, 等. 火电机组过热器压力和温度的动态研究[J]. 中国电机工程学报, 2007, 27(14): 72-76.
(Zhuo X, Zhou H, Wen Z, et al.Pressure and Temperature Dynamics in Power Plant Superheater[J]. Proceedings of the CSEE (S0258-8013), 2007, 27(14): 72-76.)
[16] 康英伟, 薛阳, 黄伟. 电站锅炉过热器的集总参数动态建模与仿真[J]. 计算机仿真, 2012, 29(9): 332-334, 342.
(Kang Y, Xue Y, Huang W.Lumped-Parameter Dynamic Modeling and Simulation of Power Plant Boiler's Superheater[J]. Computer Simulation (S1006-9348), 2012, 29(9): 332-334, 342.)
[17] 康英伟, 薛阳, 黄伟, 等. 锅炉单相受热管的三层嵌套建模研究[J]. 热能动力工程, 2013, 28(4): 363-367.
(Kang Y, Xue Y, Huang W, et al.Study of the Three-layer Nested Model for the Single-phase Heated Tubes of a Boiler[J]. Journal of Engineering for Thermal Energy and Power (S1001-2060), 2013, 28(4): 363-367.)
[18] 郑惠莉. 大型火电厂自动化设计的若干问题[J]. 电力系统自动化, 2005, 29(24): 79-82.
(Zheng H.Several Problems in the Automation Design of Large Thermal Power Plants[J]. Automation of Electric Power Systems (S1000-1026), 2005, 29(24): 79-82.)
[19] 管志敏, 王兵树, 林永君, 等. 自抗扰控制在火电厂主汽温控制中的应用研究[J]. 系统仿真学报, 2009, 21(1): 307-311.
(Guan Z, Wang B, Lin Y, et al.Main steam temperature control of thermal power plant based on active disturbance rejection control[J]. Journal of System Simulation (S1004-731X), 2009, 21(1): 307-311.)
[20] 刘翠花, 陈红, 王广军. 基于分散推理结构的过热汽温模糊控制及仿真[J]. 系统仿真学报, 2011, 23(7): 1437-1440.
(Liu C, Chen H, Wang G.Fuzzy control and simulation based on distributed inferential structure for superheated temperature[J]. Journal of System Simulation (S1004-731X), 2011, 23(7): 1437-1440.)
[21] 冯磊华, 桂卫华, 杨锋. 基于改进PSO的电站锅炉低NO_x燃烧优化[J]. 系统仿真学报, 2011, 23(12): 2812-2815.
(Feng L, Gui W, Yang F.Improved particle swarm optimization to optimize combustion of power plant boiler for low NO_x emission[J]. Journal of System Simulation (S1004-731X), 2011, 23(12): 2812-2815.)
[22] 袁世通, 韩璞, 孙明. 基于大数据的多变量系统建模方法研究[J]. 系统仿真学报, 2014, 26(7): 1454-1510.
(Yuan S, Han P, Sun M.Modeling research of multivariable system based on big data[J]. Journal of System Simulation (S1004-731X), 2014, 26(7): 1454-1510.)
[23] 苟小龙, 张杰, 王家胜, 等. 基于粒子群算法的汽轮机及其调速系统参数辨识[J]. 系统仿真学报, 2014, 26(7): 1511-1516.
(Gou X, Zhang J, Wang J, et al.Parameter identification method of steam turbine and its speed governor system based on particle swarm optimization[J]. Journal of System Simulation (S1004-731X), 2014, 26(7): 1511-1516.)
[24] 孔珑. 工程流体力学 [M]. 4版. 北京: 中国电力出版社, 2014.
(Kong L.Engineering Fluid Mechanics [M]. Fourth Edition. Beijing, China: China Electric Power Press, 2014.)
[25] 颜庆津. 数值分析[M]. 4版. 北京: 北京航空航天大学出版社, 2012.
(Yan Q.Numerical Analysis [M]. Fourth Edition. Beijing, China: Beihang University Press, 2012.)
[26] 600 MW火电机组HG-2070/17.5-YM9型锅炉设计说明书 [R]. 哈尔滨: 哈尔滨锅炉厂有限责任公司, 2005. (600 MW Thermal Power Units HG-2017/17.5-YM9 Type Boiler Design Manual [R]. Harbin, China: Harbin Boiler Works Co. Ltd, 2005.)