Life-Cycle Cost Minimization of Gas Turbine Power Cycles for Distributed Power Generation Using Sequential Quadratic Programming Method

Satriya Sulistiyo Aji, Young Sang Kim, Kook Young Ahn and Young Duk Lee
Additional contact information
Satriya Sulistiyo Aji: Department of Environment & Energy Mechanical Engineering, University of Science & Technology (UST), 156 Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Korea
Young Sang Kim: Department of Clean Fuel & Power Generation, Korea Institute of Machinery & Materials (KIMM), 156 Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Korea
Kook Young Ahn: Department of Environment & Energy Mechanical Engineering, University of Science & Technology (UST), 156 Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Korea
Young Duk Lee: Department of Environment & Energy Mechanical Engineering, University of Science & Technology (UST), 156 Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Korea

Energies, 2018, vol. 11, issue 12, 1-21

Abstract: The life-cycle cost reduction of medium-class gas turbine power plants was investigated using the mathematical optimization technique. Three different types of gas turbine power cycles—a simple cycle, a regenerative cycle, and a combined cycle—were examined, and their optimal design conditions were determined using the sequential quadratic programming (SQP) technique. As a modeling reference, the Siemens SGT-700 gas turbine was chosen and its technical data were used for system simulation and validation. Through optimization using the SQP method, the overall costs of the simple cycle, regenerative cycle, and combined cycle were reduced by 7.4%, 12.0%, and 3.9%, respectively, compared to the cost of the base cases. To examine the effect of economic parameters on the optimal design condition and cost, different values of fuel costs, interest rates, and discount rates were applied to the cost calculation, and the optimization results were analyzed and compared. The values were chosen to reflect different countries’ economic situations: South Korea, China, India, and Indonesia. For South Korea and China, the optimal design condition is proposed near the upper bound of the variation range, implying that the efficiency improvement plays an important role in cost reduction. For India and Indonesia, the optimal condition is proposed in the middle of the variation ranges. Even for India and Indonesia, the fuel cost has the largest contribution to the total cost, accounting for more than 60%.

Keywords: gas turbine; power cycles; life-cycle cost; optimization; cost minimization; sequential quadratic programming (SQP) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

Downloads: (external link)
https://www.mdpi.com/1996-1073/11/12/3511/pdf (application/pdf)
https://www.mdpi.com/1996-1073/11/12/3511/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:11:y:2018:i:12:p:3511-:d:190998

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().