Program for analysis of three phase circuit representing generator transmission line and load - PSPICE

The aim of the program is to analyze the three phase circuit representing generator transmission line and load and to plot 3 phase current and neutral current.

Problem:
220v, 50hz supply is applied to
a) balanced 3-phase star connected load contains 25 ohms of resistance and 6mH of inductance in each phase
b)
Un-balanced 3-phase star connected load of 10 ohms, 3mH inductance, 20ohms, 4mh & 30 ohms , 5mh inductance for 3-phase respectively. Plot 3 phase currents and neutral laod. If source L is 6mH and value of neutral inductance is 7mH


PROGRAM CODE ( for balanced 3-phase analysis )

*balanced 3-phase analysis
*source description
VS1 1 2 SIN(0 220 50HZ 0 0 0DEG)
VS2 1 4 SIN(0 220 50HZ 0 0 120DEG)
VS3 1 6 SIN(0 220 50HZ 0 0 240DEG)
VS4 10 9 DC 0V
VS5 10 11 DC 0V
VS6 10 13 DC 0V
VS7 0 10 DC 0V
*COMPONENT DESCRIPTION
L1 2 3 6M
L2 4 5 6M
L3 6 7 6M
L4 1 0 6M
L5 8 3 6M
L6 14 5 6M
L7 12 7 6M
R1 8 9 25
R2 12 11 25
R3 14 13 25
* ANALYSIS DESCRIPTION
.TRAN 20ms 160ms
*OUTPUT DESCRIPTION
.PROBE
.END
OUTPUT



PROGRAM CODE ( for Un-balanced 3-phase analysis )

*unbalanced 3-phase analysis
*source description
VS1 1 2 SIN(0 220 50HZ 0 0 0DEG)
VS2 1 4 SIN(0 220 50HZ 0 0 120DEG)
VS3 1 6 SIN(0 220 50HZ 0 0 240DEG)
VS4 10 9 DC 0V
VS5 10 11 DC 0V
VS6 10 13 DC 0V
VS7 0 10 DC 0V
*COMPONENT DESCRIPTION
L1 2 3 6M
L2 4 5 6M
L3 6 7 6M
L4 1 0 6M
L5 8 3 3M
L6 14 5 4M
L7 12 7 5M
R1 8 9 10
R2 12 11 30
R3 14 13 20
* ANALYSIS DESCRIPTION
.TRAN 20ms 160ms
*OUTPUT DESCRIPTION
.PROBE
.END

OUTPUT

The format for a circuit file in PSPICE

The Format for a Circuit File is as follows:
Title
Circuit description
Analysis description
Output description
.End
Note:
1. First line is the title line, always in the first line only& it may be contain any type of text
2. Last line must be the .End command and it always in the last line only.
3. The order of remaining three lines is not important in sequence &does not affect the O/P results of Simulation.
4. In a statement if more than one line, the statement can be continue on the next line,
a continuation line is identified by a(+)sign in the first column of the next line.
The continuation line must follow one another in the proper order.
5. P Spice comments or statements can be in either upper case or lower case.
6. In P Spice the symbols are represented with out subscripts Ex:-Vs =VS , Is =IS , R1 =R1 ,