Improved Firefly Algorithm: A Novel Method for Optimal Operation of Thermal Generating Units

Table 7

Result comparisons for Case 1.

Method	Best cost ($)	Mean cost ($)	Worst cost ($)		BCI (%)
DE [11]	15,449.77	15,449.87	15,449.78	3600	+0.0433
GA [11]	15,459	15,524	15,469	3600	+0.1030
PSO [11]	15,450	15,492	15,454	3600	+0.0448
KHA1 [23]	15,450.75	15,452.82	15,455.50	10,000	+0.0497
KHA2 [23]	15,448.21	15,450.83	15,453.40	10,000	+0.0333
KHA3 [23]	15,445.36	15,447.22	15,449.60	10,000	+0.0148
KHA4 [23]	15,443.08	15,443.19	15,443.30	10,000	0.0000
OBKHA [24]	15,443.08	15,443.92	15,443.33	—	0.0000
BBO [26]	15,443.10	—	—	10,000	+0.0002
EMA [30]	15,443.07	15,443.08	—	50,000	0.0000
AIS [34]	15,448	—	—	4000	+0.0319
NAPSO [18]	15,443.77	15,443.77	15,443.77	3000	+0.0045
NAPSO1 [18]	15,449.14	15,451.04	15,452.92	3000	+0.0393
NAPSO 2 [18]	15,444.77	15,446.77	15,449.77	3000	+0.0110
NAPSO 3 [18]	15,449.08	15,450.33	15,452.78	3000	+0.0389
α-MFA [53]	15442.9	—	—	1200	−0.0011
IFA	15,443.075	15,443.12	15,443.52	300