Protection for DC Distribution System with Distributed Generator

Table 3

The action situation of each CB during F1–F5.

Fault type	Percentage of fault location	Rectifier blocked time (s)	The action of breakers (time for receiving trip instruction)
			CB2	CB3	CB4	CB5	CB6	CB7
F1	10%	2.0022	+(2.0082)	#	+(2.0012)	#	#	#
	50%	2.0016	+(2.0120)	#	+(2.0010)	#	#	#
	100%	2.0010	+(2.0200)	#	+(2.0008)	#	#	#
F2	10%	2.0010	#	#	#	+(2.0010)	#	#
	50%	2.0016	#	#	#	+(2.0010)	#	#
	100%	2.0024	#	#	#	+(2.0018)	#	#
F3	10%	2.0010	#	#	#	#	+(2.0010)	#
	50%	2.0014	#	#	#	#	+(2.0010)	#
	100%	2.0024	#	#	#	#	+(2.0010)	#
F4	10%	2.0010	#	#	#	#	#	+(2.0010)
	50%	2.0016	#	#	#	#	#	+(2.0010)
	100%	2.0024	#	#	#	#	#	+(2.0014)
F5	—	2.0010	#	+(2.0008)	+(2.0008)	#	#	#

Note: results noted “+” are on behalf of the action of CB𝑖 and results noted “#” are on behalf of the inaction of CB𝑖.