Protection and Control of Modern Power Systems

Table 5 Fault current calculations/simulations under a two-phase fault at point f

From: Equivalent model of multi-type distributed generators under faults with fast-iterative calculation method based on improved PSO algorithm

	Current from network-side				Current of IIDG
	Positive sequence		Negative sequence		Positive sequence		Negative sequence
	Amp/kA	Phase/°	Amp/kA	Phase/°	Amp/kA	Phase/°	Amp/kA	Phase/°
Theoretical calculations	1.9629	266.42	0.6715	107.65	0.658	74.30	0	/
Simulation results	1.9658	265.25	0.6732	108.48	0.66	74.83	0.038	− 76.16

	Current of DFIG				Current at fault point
	Positive sequence		Negative sequence		Positive sequence		Negative sequence
	Amp/kA	Phase/°	Amp/kA	Phase/°	Amp/kA	Phase/°	Amp/kA	Phase/°
Theoretical calculations	0.647	47.33	0	/	0.805	110.15	0.805	110.15
Simulation results	0.6424	47.01	0.042	72.73	0.806	112.68	0.806	112.95

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