As final year project on PESIT Bangalore

1. Till 7th March
 Designing of Current And Voltage measuring Circuit.
 Conversion of Analog Sample into Digital value.
 Curve fitting for accurate current measurement.
 Designing of Main power circuit.
 Selection of fault current limiting resistor.
Feb 15Feb 16Feb 17Feb 18Feb 19Feb 20Feb 21Feb 22Feb 23Feb 24Feb 25Feb 26Feb 27Feb 28Mar 01Mar 02Mar 03Mar 04Mar 05Mar 06Mar 07

2. Current and Voltage
measurement circuit
Current Measurement circuit Voltage Measurement circuit
5/7/2014
Electrical Department PES University

3. Output of measurement circuit
Current Measurement circuit output Voltage Measurement circuit output
5/7/2014
Electrical Department PES University

4. Curve fitting to make current
measurement Accurate
5/7/2014 Electrical Department PES University

5. Current Measurement
Current in
Microcontroller
Current by
Ammeter
-0.441 0
-0.361 0.25
-0.291 0.43
0.071 0.82
0.4471 1.22
0.877 1.62
1.3871 2.1
1.96 2.57
2.5471 3.13
3.3471 3.86
3.7871 4.23
4.3671 4.82
4.9471 5.3
6.0371 6.25
6.9071 7.05
8.6471 8.75
10.461 10.45
12.421 12.47
13.651 13.87
14.671 15.05
After Curve
Fitting
0.0717
0.2235
0.3454
0.8523
1.2446
1.6257
2.0633
2.5758
3.1222
3.8677
4.2670
4.7799
5.2845
6.2455
7.0451
8.6553
10.0992
11.1802
11.2752
10.6593
5/7/2014
Electrical Department PES University

6. Designing of main Power Circuit
5/7/2014
Electrical Department PES University

7. Progress till now
5/7/2014
Electrical Department PES University
Programming
Simulation
Hardware
Total
0
10
20
30
40
50
60
70
80
90
100
Power factor Voltage Magnitude Current Magnitude Measurement of
Admittance
Zone definition
20
100
85
92 9075
100 100 100 100
60
100 100 100
60
52
100
95 97
84
Programming Simulation Hardware Total

8. Selection of fault resistance
 Fault current
 Supply voltage
 Power dissipated in resister
 Cost of resistance
 Breaker capacity
 Contactor, push buttons, fault selection switch capacity
 Zone 1 current---- 8 to 10A
 Zone 2 current---- 5 to 8A
 Zone 3 current---- 3 to 5A
5/7/2014
Electrical Department PES University