Aim of the experiment: Fault scenario simulation in a feeder ...

Aim of the experiment: Fault scenario simulation in a feeder
Whenever fault happens in a feeder, the circuit breaker placed in the feeder trips
due to high fault current. This will alter the loading conditions in the substation.
Whenever fault occurs, Alarm will be generated indicating tripping of circuit
breaker.
This process is simulated as below:
Fault on feeder1
(a) Prefault condition is taken as
45A flowing in Feeder 1(with 3 switches on)
30A flowing in Feeder 2(with 2 switches on)
Reading of meters
M1 M2 M3
V (kV) I (A) P (kW)
V (kV) I (A) P (kW)
V (kV) I (A) P (kW)
11 45 857.36
11 30 571.57
33 25 1423.94
(b) Fault on feeder1 is simulated by short.
(c) The circuit breaker CB6 opens, CB6 color changes to blue.
(d) Alarm gets generated.
Reading of meters changes:
M1 M2 M3
V (kV) I (A) P (kW)
V (kV) I (A) P (kW)
V (kV) I (A) P (kW)
11 0 0
11 30 571.57
33 10 571.57
Department Of Electrical and Electronics Engineering, NITK. 1

Fault on feeder2
(a) Prefault condition is taken as
45A flowing in Feeder 1(with 3 switches on)
30A flowing in Feeder 2(with 2 switches on)
Reading of meters:
M1 M2 M3
V (kV) I (A) P (kW)
V (kV) I (A) P (kW)
V (kV) I (A) P (kW)
11 45 857.36
11 30 571.57
33 25 1423.94
(b) Fault on feeder2 is simulated by short.
(c) The circuit breaker CB7 opens, CB7 color changes to blue.
(d) Alarm gets generated.
Reading of meters changes:
M1 M2 M3
V (kV) I (A) P (kW)
V (kV) I (A) P (kW)
V (kV) I (A) P (kW)
11 45 857.36
11 0 0
33 15 857.36
Department Of Electrical and Electronics Engineering, NITK. 2