Simple Quadratic Interpolation-Inspired Symbiosis Organisms Search Algorithm for Optimal Placement of Capacitors in Radial Distribution Networks with Different Loading Models

Table 17

Comparative results of the 119-bus system after compensation with the different load models.

Load type	Item	Uncompensated	Compensated
			SOS	SQI-SOS
Industrial load	(bus)	0.8888 (77)	0.9069 (77)	0.9081 (77)
	Ploss, kW	996.4081	804.7756	802.4568
	PFoverall	0.8627	0.9564	0.9581
	Total cost, $/year	523,712.09	462,490.07	461,721.30
	Annual savings ($/year)	—	61,222.01	61,990.79
	MPF, kW	10,532.80	10,483.41	10,480.68
		(#L1-2)	(#L1-2)	(#L1-2)
Residential load	Vmin (bus)	0.8910 (77)	0.9121 (77)	0.9121 (77)
	Ploss, kW	977.8818	755.8888	753.3145
	PFoverall	0.8361	0.9393	0.9426
	Total cost, $/year	513,974.67	433,645.15	433,042.09
	Annual savings ($/year)	—	80,329.51	80,932.57
	MPF, kW	10,273.71	10,273.42	10,272.36
		(#L1-2)	(#L1-2)	(#L1-2)
Commercial load	(bus)	0.8939 (77)	0.9139 (77)	0.9148 (77)
	Ploss, kW	948.3656	748.8654	738.5942
	PFoverall	0.8222	0.9244	0.9356
	Total cost, $/year	498,460.96	426,653.67	423,805.13
	Annual savings ($/year)	—	71,807.28	74,655.83
	MPF, kW	10,069.95	10,069.89	10,069.86
		(#L1-2)	(#L1-2)	(#L1-2)
Mixed load	(bus)	0.8905 (77)	0.9103 (77)	0.9104 (77)
	Ploss, kW	979.2163	769.1398	765.9692
	PFoverall	0.8464	0.9481	0.9522
	Total cost, $/year	514,676.09	442,259.89	441,643.41
	Annual savings ($/year)	—	72,416.20	73,032.68
	MPF, kW	10,360.30	10,347.46	10,344.84
		(#L1-2)	(#L1-2)	(#L1-2)