Modeling of combined heat and power plants
- Michał Leśko
The aim of this document is to present the topic of modeling Combined Heat and Power (CHP) plants in order to enable optimization of their production. CHP plants are a very efficient heat source for large District Heating (DH) networks. Historically, their operation was planned only based on weather forecasts, with the goal of covering the heat demand in the system at every moment, with as high cogeneration factor as possible. The priority of use of particular CHP units (blocks or turbines) was determined only by their efficiencies, and did not change in time. However, emerging possibilities of thermal energy storage, as well as dynamic changes of electricity and fuel prices on the market, make the problem of optimal production scheduling at CHP plants much more complicated. In order to create an optimal work plan, it is necessary to consider long periods of time and be able to simulate operation of the CHP plant in many different configurations. Simple but reliable models of particular production units are needed. This work illustrates the problem of creating such models, which is especially important in case of old turbines, whose characteristics have changed a lot since their design. Two approaches to creating linear models of CHP plants for the purpose of operational optimization have been discussed. Their advantages and disadvantages have been outlined, and a mixed approach has been proposed. Both approaches have been tested on real historical data from an existing CHP plant, and the results have been presented.
- Record ID
- Journal series
- EuroHeat & Power Magazine, ISSN 1613-0200
- Issue year
- Publication size in sheets
- Keywords in English
- Combined Heat and Power, smart district heating
- (en) English
- Score (nominal)
- Score source
- = 15.0, 20-10-2019, ArticleFromJournal
- Uniform Resource Identifier
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