Adaptive overcurrent protection scheme coordination in presence of distributed generation using radial basis neural network

Protection and Control of Modern Power Systems

Table 5 Sequence of relay operation of feeder 5 with conventional overcurrent protection scheme

Faulted Bus 6 without DG						Faulted Bus 6 with DG penetration
Relay	Time dial	Pickup tap	Short circuit current (kA)	Time operation (ms)	Operation area	Short circuit current (kA)	Time operation (ms)	Operation area
OR5	0.07	2.620	0.817	118	Feeder 5	0.817	118	Maloperates
OR 4	0.18	2.640	0.800	327	Feeder 5	0.800	327	Maloperates
OR3	0.51	2.660	0.763	1060	Feeder 5	0.763	1060	Maloperates
OR2	0.48	2.680	0.496	3502	Feeder 5	0.496	3502	Maloperates
OR1	0.59	2.700	0.374	25,262	Feeder 5	0.374	25,262	Maloperates