Power system equipment needs periodic maintenance services for reliable operation with a lower forced outage frequency.

Maintenance scheduling is a program that optimally schedules the preventive maintenance for generation units and transmission lines. Through this program, the benefit of generation units and transmission lines, as well as the power system reliability, are taken into account simultaneously. Such programs maintain the system reliability by considering the simultaneous maintenance of power system components (particularly in low-price time periods of the year when generator owners want to temporarily keep their facilities out-of-service for maintenance services). Accordingly, preventive maintenance has different advantages as:

- Reducing failures frequency that prevents the reliability deterioration of the power system, particularly in both low-demand (decreasing the number of under-maintenance components) and high-demand (decreasing the forced outages of units) time periods

- Improving repair costs

- Retaining the useful lifespan of facilities

What other benefits are there for preventive maintenance?

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