1. Introduction and problem description
The Power Plant Preventive Maintenance Scheduling Problem (PPPMSP) requires
determining the period for which generating units of an electric power system should be
taken offline for planned preventive maintenance over a time horizon. The research
performed here encompasses a wide range of power plants: thermal, nuclear, hydroelectric,
and wind power plants.
2. Model formulation and methodology
The PPPMSP is a complex optimization problem. Objectives such as total cost
minimization and consecution of a certain reliability level are proposed by imposing an
objective function and satisfying a set of constraints. This problem is categorized as a 0/1
mixed integer linear programming problem. Its resolution involves the use of an optimiser.
3. Application example and findings
An example based on a high-dimensioned realistic power system was undertaken to
validate the model. The findings demonstrate that the model works correctly.
4. Conclusions
a) Several costs are integrated.
b) Different power plants were considered.
c) A wide variety of constraints is included.
d) The results could be useful if they are applied to other realistic cases.
5. References
Ben-Daya, M., Duffuaa, S.O., Raouf A. (Eds), (2000). Maintenance, Modeling and
Optimization. Kluwer, Boston.
Ekpenyong, U.E., Zhang, J., Xia, X. (2012). “An improved robust model for generator
maintenance scheduling”. Electric Power Systems Research. 92, 29-36.