Mathematical model for integrated coal fired thermal boiler using physical laws

The boiler of coal-fired thermal power plant consists of integrating process units such as the furnace, economizer, drum, and superheater. There is a lack of proper dynamic model derived from mass and energy balances of individual units integrated together where dynamics of material and energy flow are not understood properly supporting the larger footprints and environmental impact of the specific industry. This paper considers formulation of simple mathematical models for integrated boiler units based on first principle laws (excluding furnace). The derived equations are validated with the real-time plant data from 210 MW coal-fired thermal power plant. Though temperature and pressures are convertible at equilibrium through Clausius-Clapeyron equation, the model supports for level, temperature and pressure measurements and predictions. The effects of change in parameters of the boiler are studied and discussed in detail. The model can be used for further process control studies.

[1]  Xue Yali,et al.  Heat-power-gas capacity of natural gas-fired combined cycle cogeneration power plant , 2011, 2011 International Conference on Materials for Renewable Energy & Environment.

[2]  Samsher,et al.  Mathematical Modeling and Computer Simulation of a Combined Cycle Power Plant , 2011, SocProS.

[3]  Aman Behal,et al.  Weighted Least-Squares Approach for Identification of a Reduced-Order Adaptive Neuronal Model , 2012, IEEE Transactions on Neural Networks and Learning Systems.

[4]  Michael J. Grimble,et al.  Modelling and Simulation of Power Generation Plants , 1994 .

[5]  Yasuo Takagi,et al.  A new control strategy for coal fired thermal power plants , 2005, Proceedings of 2005 IEEE Conference on Control Applications, 2005. CCA 2005..

[6]  Liu Changliang,et al.  Nonlinear boiler model of 300 MW power unit for system dynamic performance studies , 2001, ISIE 2001. 2001 IEEE International Symposium on Industrial Electronics Proceedings (Cat. No.01TH8570).

[7]  M. Akram,et al.  Effect of fuel characteristics and operating conditions on NOx emissions during fluidised bed combustion of high moisture biomass with coal , 2013 .

[8]  B. T. Aklilu,et al.  Mathematical modeling and simulation of a cogeneration plant , 2010 .

[9]  P. Lund.  Verification of the electromechanical transients program setpos by means of comprehensive power‐station measurements , 2007 .

[10]  B. W. Hogg,et al.  Identification of boiler models , 1989 .

[11]  Karl Eklund,et al.  A Simplified Nonlinear Model of a Drum Boiler-Turbine Unit , 1972 .

[12]  E. Cheres.  Small and medium size drum boiler models suitable for long term dynamic response , 1990 .

[13]  Jie Zhang,et al.  Neural network approach for predicting drum pressure and level in coal-fired subcritical power plant , 2015, Fuel.

[14]  Wojciech Stanek,et al.  Hybrid model of steam boiler , 2010 .

[15]  K. Hemmaplardh,et al.  A Generalized Methodology for Modeling System Components in Power System Dynamics Simulation , 1982, IEEE Transactions on Power Apparatus and Systems.

[16]  Dawid Taler,et al.  Optimization of the boiler start-up taking into account thermal stresses , 2015 .

[17]  Georgi M. Dimirovski,et al.  Nonlinear adaptive control for multi‐machine power systems with boiler‐turbine‐generator unit , 2015 .

[18]  Mohsen Assadi,et al.  Development of artificial neural network model for a coal-fired boiler using real plant data , 2009 .

[19]  J. F. Kikstra,et al.  Dynamic Modeling of a Cogenerating Nuclear Gas Turbine Plant—Part II: Dynamic Behavior and Control , 2002 .

[20]  H. M. Rai,et al.  Process Control of Power Plant Superheater-A Matlab/Simulink Approach , 2012, 2012 Second International Conference on Advanced Computing & Communication Technologies.

[21]  Yang Fan,et al.  Series cascade control of coal-fired drum boiler , 2011, 2011 International Conference on Electric Information and Control Engineering.

[22]  Jun Chen,et al.  Operations Optimization of Nuclear Hybrid Energy Systems , 2016 .

[23]  K. S. Ahluwalia,et al.  Dynamic Modeling of a Combined-Cycle Plant , 1990 .

[24]  Jeeyoung Shin,et al.  Analysis of the dynamic characteristics of a combined-cycle power plant , 2002 .

[25]  Jun Chen,et al.  Economic optimization of operations for hybrid energy systems under variable markets , 2016 .

[26]  Joseph Bentsman,et al.  Nonlinear control oriented boiler modeling-a benchmark problem for controller design , 1996, IEEE Trans. Control. Syst. Technol..

[27]  Ertuğrul Çam,et al.  Experimental modelling and simulation with adaptive control of power plant , 2007 .

[28]  Jonas Eborn,et al.  On Model Libraries for Thermo-hydraulic Applications , 2001 .

[29]  F. P. de Mello,et al.  Boiler models for system dynamic performance studies , 1991 .

[30]  Liu Changliang,et al.  Model identification of thermal process in power plant , 2004, 2004 IEEE Region 10 Conference TENCON 2004..

[31]  Jie Cui,et al.  CFD application for coal/air balancing in power plants , 2006 .

[32]  Rames C. Panda,et al.  Modeling, identification, and control of coal-fired thermal power plants , 2014 .

[33]  David R. Selviah,et al.  Real-Time Nonlinear Parameter Estimation Using the Levenberg–Marquardt Algorithm on Field Programmable Gate Arrays , 2013, IEEE Transactions on Industrial Electronics.