Considering Maintenance Cost in Unit Commitment Problems

Hyeongon Park, Joonhyung Park, Jong-Young Park and Jae-Haeng Heo
Additional contact information
Hyeongon Park: Department of Statistics, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
Joonhyung Park: School of Information Technology & Electrical Engineering, The University of Queensland, St. Lucia, QLD 4072, Australia
Jong-Young Park: Korea Railroad Research Institute, 176 Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-do 16105, Korea
Jae-Haeng Heo: Raon Friends, 267 Simin-daero, Dongan-gu, Anyang-si, Gyeonggi-do 14054, Korea

Energies, 2017, vol. 10, issue 11, 1-12

Abstract: Electric power systems worldwide are receiving an increasing volume of wind power generation (WPG) because of environmental concerns and cost declines associated with technological innovation. To manage the uncertainty of WPG, a system operator must commit sufficient conventional generators to provide an appropriate reserve. At times, frequent start and stop operations are applied to certain generators, which incurs maintenance costs associated with thermal-mechanical fatigue. In this paper, we suggest a comprehensive approach to unit commitment (UC) that considers maintenance cost: the parameters of equivalent start (ES) and equivalent base load hours (EBHs) are adopted in the UC problem to determine optimal generation scheduling. A new formulation for the maintenance cost that can be readily combined with an existing mixed integer linear programming algorithm is presented. The effectiveness of the proposed UC method is verified through simulations based on an IEEE 118-bus test system. The simulation results show that considering maintenance cost in the UC problem effectively restricts frequent start and stop operation scheduling. Furthermore, the operating cost is reduced, the required reserve level is maintained, and the computational time is comparable with that of the conventional UC method.

Keywords: unit commitment; maintenance cost; daily start and stop operation; weekly start and stop operation; equivalent start; equivalent base hours (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: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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