Protection for DC Distribution System with Distributed Generator

Table 1

Simulation values of electrical parameters in DC distribution system.

Electrical parameters		Simulation values
The output of distribution transformer	AC voltage 𝑈𝑇 (kV)	6.60
	AC current 𝐼𝑇 (kA)	0.95
MV DC voltages	10 kV DC bus voltage 𝑈bus (kV)	10.50
	DG output voltage 𝑈dg (kV)	10.53
MV DC currents	Distribution converter station output current 𝐼dc (kA)	0.69
	DG output current 𝐼dg1 (CB2) and 𝐼dg2 (CB4) (kA)	0.095
	DC/DC converter station input current 𝐼buck (kA)	0.11
	Inverter station input current 𝐼inv (kA)	0.162
	MV DC load current 𝐼𝑟 (kA)	0.513
The output of DC/DC converter station	DC voltage 𝑈buck (kV)	0.40
	DC current 𝐼buck_o (kA)	4.0
The output of inverter station	AC voltage 𝑈inv (kV)	0.38
	AC current 𝐼inv_o (kA)	2.57