Flexible operation of a combined cycle cogeneration plant - A techno-economic assessment

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Beiron, Johanna,1992Chalmers tekniska högskola,Chalmers University of Technology (författare)

Flexible operation of a combined cycle cogeneration plant - A techno-economic assessment

Artikel/kapitelEngelska2020

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Elsevier BV,2020
electronicrdacarrier

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LIBRIS-ID:oai:research.chalmers.se:b0bb0417-2851-46ff-844a-d4a6f03fcd81
https://research.chalmers.se/publication/518439URI
https://doi.org/10.1016/j.apenergy.2020.115630DOI
https://research.chalmers.se/publication/518375URI

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Språk:engelska
Sammanfattning på:engelska

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The need for flexibility in combined heat and power (CHP) plants is expected to increase due to the strong expansion of wind power in electricity systems. Cost-effective strategies to enhance the flexibility of CHP operation are therefore needed. This paper analyzes three types of flexibility measures for a combined cycle CHP plant and their relative impact on the plant operation and revenue. The types of flexibility are: operational flexibility of the fuel conversion system, product flexibility with variable plant product ratios (heat/electricity/primary frequency response), and thermal flexibility in a district heating network. A modeling framework consisting of steady-state and dynamic process simulation models and optimization model is developed to combine static, dynamic, technical and economic perspectives on flexibility. A reference plant serves as a basis for the process model development and validation, and an energy system model provides input profiles for future electricity price scenarios. The results indicate that product flexibility and thermal flexibility have the highest value for the cogeneration plant (up to 16.5 M€ increased revenue for a 250 MWel plant), while operational flexibility (ramp rate) has a comparatively small impact (<1.4 M€). A wide load span and plant versatility, e.g. electricity and heat generating potential between 0 and 139% of nominal capacity, is beneficial in future energy system contexts, but has a marginal value in the current system. Electricity price volatility is a main driver that increases the value of flexibility and promotes operating strategies that follow the electricity price profile rather than the heat demand.

Ämnesord och genrebeteckningar

TEKNIK OCH TEKNOLOGIER Maskinteknik Energiteknik hsv//swe
ENGINEERING AND TECHNOLOGY Mechanical Engineering Energy Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Naturresursteknik Energisystem hsv//swe
ENGINEERING AND TECHNOLOGY Environmental Engineering Energy Systems hsv//eng
Flexibility
Process optimization
Gas turbine combined cycle
District heating
Steam cycle
Combined heat and power

Biuppslag (personer, institutioner, konferenser, titlar ...)

Mocholí Montañés, Rubén,1990Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)mochol (författare)
Normann, Fredrik,1982Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)normann (författare)
Johnsson, Filip,1960Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)fijo (författare)
Chalmers tekniska högskola (creator_code:org_t)

Sammanhörande titlar

Ingår i:Applied Energy: Elsevier BV2781872-91180306-2619

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Applied Energy (Sök värdpublikationen i LIBRIS)

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Av författaren/redakt...: Beiron, Johanna, ...; Mocholí Montañés ...; Normann, Fredrik ...; Johnsson, Filip, ...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Maskinteknik; och Energiteknik

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Naturresurstekni ...; och Energisystem

Artiklar i publikationen: Applied Energy

Av lärosätet: Chalmers tekniska högskola

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