Effect of DC Link Control Strategies on Multiterminal AC-DC Power Flow

Table 3

Study of IEEE-300 bus system with a three-terminal HVDC network.

HVDC link		HVDC link specification		Power-flow solution
Rectifier bus	Inverter buses	Control strategy 4		AC terminal buses		HVDC variables
		Spec. values		ACSV		DCSV
101	102	(p.u.)	0.5		0.9621		0.995
							0.996
							0.3984
		(p.u.)	0.4		−16.34°		0.4975
							0.9
							0.9
	104	(p.u.)	1		0.997		1.137
							1.0851
							1.0616
		(deg.)	5		−16.658		0.9139
							0.9197
		(deg.)	15		1.0103		0.9286
		(deg.)	15		−18.43°	NI	7
		Control strategy 5		AC terminal buses		HVDC variables
		Spec. values		ACSV		DCSV
86	87	(p.u.)	0.3		1.007		0.997
							0.998
							0.5
		(p.u.)	0.2		−13.843		0.3009
							0.2004
							0.5021
		(p.u.)	1		0.996		15.266
							20.363
							17.314
	90		1.08		−23.842		0.9187
							0.91
			1.1		0.9694		0.9359
			1.1		−23.842	NI	12
		Control strategy 6		AC terminal buses		HVDC variables
		Spec. values		ACSV		DCSV
77	84	(p.u.)	0.2		1.052		0.998
							0.999
							0.1996
		(p.u.)	0.1		−6.815°		0.0999
							0.3
							0.3
	86	(p.u.)	1		1.0272		14.212
							17.647
							17.985
			1.01		−11.694		0.9412
							0.9342
			1.04		1.02		0.9417
			1.09		−12.81°	NI	10