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Lee, Kwang Y., Liangyu Ma, Chang J. Boo, Won-Hee Jung, and Sung-Ho Kim, "Intelligent Modified Predictive Optimal Control of Reheater Steam Temperature in a Large-Scale Boiler Unit," Proc. of the IEEE Power Engineering Society General Meeting, in Calgary, Canada, July 26-30, 2009.
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Intelligent Modified Predictive Optimal Control of Reheater Steam Temperature in a Large-Scale Boiler … The power plant under investigation is a large-scale coal-pulverized power generating unit. The feedwater pumped into the boiler will travel through several sub-systems before it becomes qualified superheated steam and is sent to the high
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Jul 01, 1984 · This paper describes a microprocessor-based simulator of a Boiler-Turbine Plant, and control studies that have been carried out on the simulator. The …
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As the example of the model used for control testing the cascade superheated steam temperature control is described. The superheater model taken from the whole large boiler model was completed with regulating unit, nonlinearities, etc. Various controllers, especially PI and LQ STC, were compared in the role of the main controller.
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A modified predictive optimal control (MPOC) scheme based on neural network modeling and particle swarm optimization (PSO) techniques is proposed in this paper for reheater steam temperature (RST) control of a large-scale boiler unit. A recurrent neural network is trained to directly model the temperature dynamic response of the reheater system.
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Sep 07, 2021 · The control of the boiler drum level is investigated using a feedback method. A laboratory-scale steam boiler, a small version of the power plant boiler, is intended for research in this article. In, fuzzy control was used to control the boiler with sugarcane fuel. This article uses a tool to find the dynamics of plant and set up control loops.
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Lee, Kwang Y., Liangyu Ma, Chang J. Boo, Won-Hee Jung, and Sung-Ho Kim, "Intelligent Modified Predictive Optimal Control of Reheater Steam Temperature in a Large-Scale Boiler Unit," Proc. of the IEEE Power Engineering Society General Meeting, in Calgary, Canada, July 26-30, 2009.
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Jul 01, 1984 · This paper describes a microprocessor-based simulator of a Boiler-Turbine Plant, and control studies that have been carried out on the simulator. The …
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Jan 01, 2014 · A supercritical (SC) once-through boiler unit is a typical multivariable system with large inertia and nonlinear, slow time-variant, and time-delay characteristics, which often makes the coordinated control quality deteriorate under wide-range loading conditions, and thus influences the unit load response speed and leads to heavy fluctuation of the main steam …
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Ken has commissioned Industrial Watertube boilers with Cleaver Brook and Natcom burners including Low Nox industrial burners and burner management systems including SCADA. Ken was promoted to General Manager of Service Operations in 2010 and manages the operations of the Service, Parts and Aftermarket divisions of Miller Proctor Nickolas Inc.
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of the manipulated variables. EUcontrol is a dedicated model-based boiler optimization system based on adaptive, multi-variable model predictive control strategies and centered on a physical boiler model (Physical Model Predictive Control). It provides real-time optimization of the complex boiler operation and combustion (Figure 1).
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Jan 01, 2008 · Proceedings of the 17th World Congress The International Federation of Automatic Control Seoul, Korea, July 6-11, 2008 Controller Design for a 1000 MW Ultra Super Critical Once-through Boiler Power Plant Kwang Y. Lee*, Joel H. Van Sickel**, Jason A. Hoffman**, Won-Hee Jung+, and Sung-Ho Kim+ * Baylor University, Waco, TX 76798, USA (e-mail: [email protected]) …
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Abstract – A Modified Predictive Optimal Control (MPOC) scheme based on neural network modeling and Particle Swarm Optimization (PSO) techniques is proposed in this paper for Reheater Steam Temperature (RST) control of a large-scale boiler unit. A recurrent neural network is trained to directly
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Jan 01, 1984 · Using these equations, the pressure ratio Pso^Patv c a n ^ e c a l c u l a t e d given A, the steam temperature,and the nature of the steam flow. 2.3 Representation of Steam Properties the above equation can be manipu The original model used a straight line approximat ion for the thermodynamic properties and thus its performance on large load
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Achieving accurate control of main steam temperature is a very difficult task in thermal power plants due to the large process lag (8 to 10 minutes) associated with the superheater system and there exists a deviation of ± 10 °C in closed loop control. A control oriented boiler model and an appropriate optimal control strategy are the essential tools for improving the accuracy of this …
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International Journal of Scientific & Engineering Research, Volume 3, Issue 6, June-2012 1 ISSN 2229-5518 Fuzzy Logic Approach for Boiler Temperature & Water Level Control Anabik Shome, Dr. S.Denis Ashok Abstract— Boiler is the main component in generating steam in thermal power generation units and its control is very important in many applications.
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CN105955210A CN201610281543.4A CN201610281543A CN105955210A CN 105955210 A CN105955210 A CN 105955210A CN 201610281543 A CN201610281543 A CN 201610281543A CN 105955210 A CN105955210 A CN 105955210A Authority CN China Prior art keywords boiler control heat boiler waste heat fuzzy Prior art date Kefid Legal status (The legal status is …
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control of a large-scale once-through-type USC boiler power plant is investigated. Larger more complicated power plants heaters, economizers, and air preheater to raise the temperature of the steam, water, or air, respectively. There is a separator particular instance of predictive optimal control uses recurrent NNs (RNNs) [10] to
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Boiler steam temperature controlled object has characteristics of full scope nonlinear and time-variable, which bring more difficulties in modeling and designing control systems. Adopting Jordan block in broad sense and algebra equivalence transform method, the description of transfer functions paragraphed can be transformed into that of state-space with changeable …
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Intelligent Modified Predictive Optimal Control of Reheater Steam Temperature in a Large-Scale Boiler … The power plant under investigation is a large-scale coal-pulverized power generating unit. The feedwater pumped into the boiler will travel through several sub-systems before it becomes qualified superheated steam and is sent to the high
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Sep 11, 2017 · Boiler–turbine system, which is a core component in thermal electric power plant, initially converts chemical energy of fuel into high-pressure and high-temperature steam and then converts it into electric power [1,2,3].The ultimate task of boiler–turbine system is to meet the power demand of electric grid while successfully regulating the critical parameters of boiler …
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Apr 24, 2019 · Lee KY, Ma L, Boo CJ, Jung WH, Kim SH (2009) Intelligent modified predictive optimal control of reheater steam temperature in a large-scale boiler unit. In: Power and Energy Society General Meeting, Calgary, USA, Jul. 2009. 10. Fast M, Assadi M, De S (2009) Development and multi-utility of an ANN model for an industrial gas turbine.
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International Journal of Scientific & Engineering Research, Volume 3, Issue 6, June-2012 1 ISSN 2229-5518 Fuzzy Logic Approach for Boiler Temperature & Water Level Control Anabik Shome, Dr. S.Denis Ashok Abstract— Boiler is the main component in generating steam in thermal power generation units and its control is very important in many applications.
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May 01, 2015 · The main tasks in the USC unit temperature control are the temperature control of superheat steam and reheat steam temperature. For once-through boiler of USC unit, superheated steam temperature is regulated by ratio of feed coal flow and feedwater flow basically, and tuned by the attemperators sprays of desuperheater around setpoint.
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Intelligent Modified Predictive Optimal Control of Reheater Steam Temperature in a Large-Scale Boiler … environment due to the high nonlinearity of the boiler unit, and this often costs considerable amount of effort and time [1]. Therefore, it is a logical choice to take advantages of intelligent system techniques in improving the steam
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pressure and temperature using steam generator [27-29]. The essential components of the steam turbine is reheater, condenser, boiler feed pump, steam - generator (Boiler), drum and control valve. The overall efficiency of the turbine is increased by dividing the steam pressure stages into two or more stages using a reheater unit. Based on the
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May 02, 2011 · Multi-input multi-output (MIMO) dynamic matrix control (DMC) technique is applied to control steam temperatures in a large-scale ultrasupercritical once-through boiler-turbine system. Specifically, four output variables (i.e., outlet temperatures of platen superheater, finish superheater, primary reheater, and finish reheater) are controlled using four input …
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the manipulated variables. The optimiser presented is a dedicated model-based boiler optimisation system based on adaptive, multi-variable model predictive control strategies and centred on a physical boiler model (Physical Model Predictive Control). It provides real-time optimisation of the complex boiler operation and combustion (Figure 1).
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Abstract--A large-scale power plant, specifically, a 500MW, once-through type, super-critical boiler plant, requires investigation for the development of a control system. Using data from the power plant, a model can be realized using intelligent techniques. In this paper, a …
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Apr 01, 2020 · An intelligent predictive controller is thus developed based on the NN model to track the desired CO 2 capture level and maintain the given re-boiler temperature, in which the particle swarm optimization (PSO) algorithm is applied to find the best future control sequence for the PCC process. A warm start scheme is proposed in the IPC to improve
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Due to the computational intensity of modified predictive optimal control, it was rendered unviable The modelling and control of a large-scale 1000 MW once-through type ultra super-critical boiler power preheater to raise the temperature of the steam, water or air, respectively. There is a separa tor on top of the furnace which
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A large-scale 1000 MW once-through type ultra super-critical boiler power plant, requires investigation for the development of an analyzable model for use in the development of an intelligent control system. Using data from the power plant, a model is realized using dynamically recurrent neural networks. For proper operation, the plant must be broken into smaller …
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Get priceJul 22, 2014 · For the operation of the supercritical once-through boiler generation units, the control of the temperature at intermediate point (IPT) is highly significant. IPT is the steam temperature at the outlet of the separator. Currently, PID control algorithms are widely adopted for the IPT control. However, PID cannot achieve the optimal performances as the …
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A novel 3-Input-3 -Output (3×3) Model-Free Adaptive (MFA) controller with a set of artificial neural networks as part of the controller is introduced. A 3×3 MFA control system using the inventive 3×3 MFA controller is described to control key process variables including Power, Steam Throttle Pressure, and Steam Temperature of boiler-turbine-generator (BTG) units in conventional and …
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