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Control-oriented modeling and analysis of direct energy balance in coal-fired boiler-turbine unit
- Source :
- Control Engineering Practice. 55:38-55
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- Direct energy balance (DEB) coordinated control scheme is widely used by field engineers in coal-fired power plants while attracting little attention in the academic community. This paper aims to derive a mathematical model that is suitable for DEB research. To balance the model’s fidelity and simplicity, the power plant is divided into three transformation modules and, using conservation laws, a dynamic model is developed to describe each module. Within reasonable assumptions, numerous module equations are combined to yield a 6th-order nonlinear model. Time constants of the model are identified based on Pareto optimization. Model accuracy is confirmed using field measurements from a 300 MW coal-fired power plant. Based on the linearized model, the merits of the DEB control structure are analyzed. It is confirmed that the DEB control is sufficient to fulfill the fundamental goals of power plant regulation. An illustration of performance improvement is given by introducing gain scheduling techniques to the DEB structure. The proposed model can provide groundwork for future development of advanced control algorithms under the DEB structure.
- Subjects :
- 0209 industrial biotechnology
Engineering
Power station
business.industry
020209 energy
Applied Mathematics
Energy balance
Control engineering
02 engineering and technology
Multi-objective optimization
Field (computer science)
Computer Science Applications
Power (physics)
020901 industrial engineering & automation
Transformation (function)
Gain scheduling
Control and Systems Engineering
0202 electrical engineering, electronic engineering, information engineering
Electrical and Electronic Engineering
Performance improvement
business
Subjects
Details
- ISSN :
- 09670661
- Volume :
- 55
- Database :
- OpenAIRE
- Journal :
- Control Engineering Practice
- Accession number :
- edsair.doi...........cbe81607c53edffc333cd4d91a3fb2c0
- Full Text :
- https://doi.org/10.1016/j.conengprac.2016.06.013