Traditionally the gas turbine power plant preventive maintenances are scheduled with constant maintenance intervals based on recommendations from the equipment suppliers. The preventive maintenances are based on fleet wide experiences, and they are scheduled in a one-size-fit-all fashion. However, in reality, the operating conditions for each gas turbine may vary from site to site, and from unit to unit. Furthermore, the gas turbine is a repairable deteriorating system, and preventive maintenance usually restores only part of its performance. This suggests the gas turbines need more frequent inspection and maintenance as it ages. A unit specific sequential preventive maintenance approach is therefore needed for gas turbine power plants preventive maintenance scheduling. Traditionally the optimization criteria for preventive maintenance scheduling is usually cost based. In the deregulated electric power market, a profit based optimization approach is expected to be more effective than the cost based approach. In such an approach, power plant performance, reliability, and the market dynamics are considered in a joint fashion. In this paper, a novel idea that economics drive maintenance expense and frequency to more frequent repairs and greater expense as the equipment and components age is introduced, and a profit based unit specific sequential preventive maintenance scheduling methodology is developed. To demonstrate the feasibility of the proposed approach, this methodology is implemented using a base load combined cycle power plant with single gas turbine unit.
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ASME 2005 Power Conference
April 5–7, 2005
Chicago, Illinois, USA
Conference Sponsors:
- Power Division
ISBN:
0-7918-4182-0
PROCEEDINGS PAPER
A Sequential Approach for Gas Turbine Power Plant Preventive Maintenance Scheduling
Yongjun Zhao,
Yongjun Zhao
Georgia Institute of Technology, Atlanta, GA
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Vitali Volovoi,
Vitali Volovoi
Georgia Institute of Technology, Atlanta, GA
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Mark Waters,
Mark Waters
Georgia Institute of Technology, Atlanta, GA
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Dimitri Mavris
Dimitri Mavris
Georgia Institute of Technology, Atlanta, GA
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Yongjun Zhao
Georgia Institute of Technology, Atlanta, GA
Vitali Volovoi
Georgia Institute of Technology, Atlanta, GA
Mark Waters
Georgia Institute of Technology, Atlanta, GA
Dimitri Mavris
Georgia Institute of Technology, Atlanta, GA
Paper No:
PWR2005-50131, pp. 353-362; 10 pages
Published Online:
October 27, 2008
Citation
Zhao, Y, Volovoi, V, Waters, M, & Mavris, D. "A Sequential Approach for Gas Turbine Power Plant Preventive Maintenance Scheduling." Proceedings of the ASME 2005 Power Conference. ASME 2005 Power Conference. Chicago, Illinois, USA. April 5–7, 2005. pp. 353-362. ASME. https://doi.org/10.1115/PWR2005-50131
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