Economic assessment of gas-steam systems taking account of variable loads
Abstract
Increasing competition from high-power gas technologies on the energy market depends on many factors. Apart from the requirement to meet ecological criteria, the most important of them are: an improvement in thermal flexibility, favourable characteristics of performance under variable loads and the economic efficiency related thereto. The adaptability of gas technologies to changes in loads in the 24-hour cycle is now gaining special importance. This paper is focused on issues related to adapting the methodology of economic calculations to changing functions of gas technologies in the electricity generation sub-sector. In the new market environment, the economic model comprising a certain number of parameters (which usually characterize the base load) and taking account of revenues coming from this type of operation does not provide a full picture. First and foremost, it does not indicate additional revenues that could potentially be earned from new market possibilities related to rendering system services and lessening the environmental impact. Generally speaking, a more accurate approach to the assessment of gas-steam systems has to take account of basic parameters that determine thermal flexibility (start-up and shutdown times), issues related to maintaining availability, changes in efficiency under variable loads and emissions characteristics.References
[1] ISO 11086: 1996 (E/F), Gas Turbines – Vocabulary
[2] Kaliski M. et al.: Natural Gas in Poland and the European Union. Archiwum Energetyki, Vol. XLII, No 1, 2012, pp. 93-107
[3] Janusz P.: Aktualna sytuacja na rynku gazu ziemnego-perspektywy rozwoju [Current situation on the natural gas market – prospects of development]. Polityka Energetyczna , Vol. 16, Book .2, 2013
[4] Kotowicz J.: Elektrownie parowo-gazowe [Steam-gas power plants]. Kaprint , Lublin, 2008
[5] Skorek J., Kalina J. : Gazowe układy kogeneracyjne [Gas turbine cogeneration systems].WNT, Warszawa 2005
[6] Sierpińska M., Jachna T.: Ocena przedsiębiorstwa według standardów światowych [An enterprise assessment according to the world standards]. PWN, Warszawa, 1999
[7] Skrzypek J.: Biznesplan Model Najlepszych Praktyk [Business plan – A model of best practices]. Poltex MT Biznes, December 2010
[8] Gulen S. Can, Mazumder I.: An Expanded Cost of Electricity Model for Highly Flexible Power Plants. ASME Paper GT2012-68299, 2012
[9] Tsukagoshi K., Muyama A., Masada J., Iwasaki Y., Ito E. : Operating Status of Uprating. Gas Turbines and Future Trend of Gas Turbine Development. Mitsubishi Heavy Industries Technical Review Vol. 44 No.4, 2007
[10] Maekawa A. : Evolution and Future Trend of Large Frame Gas Turbine for Power Generation. J. of Power and Systems, Vol. 5, No 2, 2011
[11] Siemens Combined Cycle Power Plants. www.siemens.com/energy
[12] J-series Gas Turbine. www.mhi.co.jg/en/power/infex.html
[13] Balling L.: Fast Cycling and Rapid Start-up: New Generation of Plants Achieves Impressive Results. Modern Power Systems, January 2011
[14] Picard A. Meinecke G. : The Future Role of Fossil Power Generation. www.siemens.com/energy
[15] Technical Performance Gas Power Plants. www.alstom.com/power
[16] www.ge-flexibility.com
[17] Balling L.: Flexible Future for Combined Cycle. Modern Power Systems, December 2010
[2] Kaliski M. et al.: Natural Gas in Poland and the European Union. Archiwum Energetyki, Vol. XLII, No 1, 2012, pp. 93-107
[3] Janusz P.: Aktualna sytuacja na rynku gazu ziemnego-perspektywy rozwoju [Current situation on the natural gas market – prospects of development]. Polityka Energetyczna , Vol. 16, Book .2, 2013
[4] Kotowicz J.: Elektrownie parowo-gazowe [Steam-gas power plants]. Kaprint , Lublin, 2008
[5] Skorek J., Kalina J. : Gazowe układy kogeneracyjne [Gas turbine cogeneration systems].WNT, Warszawa 2005
[6] Sierpińska M., Jachna T.: Ocena przedsiębiorstwa według standardów światowych [An enterprise assessment according to the world standards]. PWN, Warszawa, 1999
[7] Skrzypek J.: Biznesplan Model Najlepszych Praktyk [Business plan – A model of best practices]. Poltex MT Biznes, December 2010
[8] Gulen S. Can, Mazumder I.: An Expanded Cost of Electricity Model for Highly Flexible Power Plants. ASME Paper GT2012-68299, 2012
[9] Tsukagoshi K., Muyama A., Masada J., Iwasaki Y., Ito E. : Operating Status of Uprating. Gas Turbines and Future Trend of Gas Turbine Development. Mitsubishi Heavy Industries Technical Review Vol. 44 No.4, 2007
[10] Maekawa A. : Evolution and Future Trend of Large Frame Gas Turbine for Power Generation. J. of Power and Systems, Vol. 5, No 2, 2011
[11] Siemens Combined Cycle Power Plants. www.siemens.com/energy
[12] J-series Gas Turbine. www.mhi.co.jg/en/power/infex.html
[13] Balling L.: Fast Cycling and Rapid Start-up: New Generation of Plants Achieves Impressive Results. Modern Power Systems, January 2011
[14] Picard A. Meinecke G. : The Future Role of Fossil Power Generation. www.siemens.com/energy
[15] Technical Performance Gas Power Plants. www.alstom.com/power
[16] www.ge-flexibility.com
[17] Balling L.: Flexible Future for Combined Cycle. Modern Power Systems, December 2010
Published
2015-06-24
How to Cite
LEPSZY, Sebastian; TADEUSZ CHMIELNIAK, Tadeusz; CZAJA, Daniel.
Economic assessment of gas-steam systems taking account of variable loads.
Journal of Power Technologies, [S.l.], v. 95, n. 5, p. 54--62, june 2015.
ISSN 2083-4195.
Available at: <https://papers.itc.pw.edu.pl/index.php/JPT/article/view/653>. Date accessed: 21 nov. 2024.
Section
Polish Energy Mix 2014
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).