Long-Term Maintenance Scheduling of Smart Distribution System through a PSO-TS Algorithm

Table 7

System cost with different reliability requirements.

Cost	Ordinary constraints ($); (SAIFI ≤ 1.75 month^−1, SAIDI ≤ 10 h·month^−1)	Stricter constraints ($); (SAIFI ≤ 1.5 month^−1, SAIDI ≤ 8 h·month^−1)
Lost load penalty	257,278.0	268,927.0
Corrective maintenance	22,495.7	23,531.1
Preventive maintenance	2,156.0	2,137.5
Total	281,929.7	294,595.6