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A Neural Net Model-based Multivariable Long-range Predictive Control Strategy Applied in Thermal Power Plant Control

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Prasad, G, Swidenbank, E and Hogg, B W (1998) A Neural Net Model-based Multivariable Long-range Predictive Control Strategy Applied in Thermal Power Plant Control. IEEE Trans. On Energy Conversion, 13 (2). pp. 176-182. [Journal article]

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Abstract

A constrained multivariable control strategy along with its application in more efficient thermal power plant control is presented in this paper. A neural network model-based non-linear long-range predictive control algorithm is derived, which provides offset-free closed-loop behavior with a proper and consistent treatment of modeling errors and other disturbances. A multivariable controller is designed and implemented using this algorithm. The system constraints are taken in to account by including them in the control algorithm using real-time optimization. By running a simulation of a 200 MW oil-fired drum-boiler thermal power plant over a load-profile along with suitable PRBS signals superimposed on controls, the operating data is generated. Neural network (NN) modeling techniques have been used for identifying global dynamic models (NNARX models) of the plant variables off-line from the data. To demonstrate the superiority of the strategy in a MIMO case, the controller has been used in the simulation to control main steam pressure and temperature, and reheat steam temperature during load-cycling and other severe plant operating conditions.

Item Type:Journal article
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Computing and Intelligent Systems
Research Institutes and Groups:Computer Science Research Institute
Computer Science Research Institute > Intelligent Systems Research Centre
ID Code:8008
Deposited By:Professor Girijesh Prasad
Deposited On:01 Feb 2010 12:14
Last Modified:01 Feb 2010 12:14

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