power system design project
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8/9/2019 power system design project
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EEL 4213 Power Systems I
Power System Design Project
The single-line diagram shows a 31-bus interconnected power systems.
The following data are given:
Bus Data and Load Schedule The system base is 100 MVA
Bus
Number
Bus
Type
Nominal
Voltage
Load Real
Power
Power
Factor
Maximum
Generator
Power Output
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1 PQ 230 kV 43 MW 0.90
2 PQ 230 kV 28 MW 0.95
3 PV 115 kV 0 MW 1.0 300 MW / 0.9 pf
4 PQ 115 kV 23 MW 0.92
5 PQ 230 kV 18.6 MW 0.91
6 PQ 230 kV 30 MW 0.96
7 PQ 230 kV 22 MW 0.87
8 PQ 115 kV 9.4 MW 0.94
9 PQ 69 kV 6.3 MW 0.86
10 PQ 69 kV 15.2 MW 0.87
11 PQ 115 kV 42 MW 0.91
12 PV 115 kV 0 MW 1.0 250 MW / 0.95 pf 13 PQ 69 kV 12.7 MW 0.73
14 PQ 69 kV 16.8 MW 0.89
15 PQ 230 kV 34 MW 0.94
16 PQ 230 kV 37 MW 0.95
17 PV 230 kV 0 MW 1.0 350 MW / 0.9 pf
18 PQ 69 kV 5.2 MW 0.63
19 PQ 115 kV 19.9 MW 0.97
20 PQ 69 kV 0.8 MW 0.66
21 PQ 115 kV 40 MW 0.89
22 PQ 115 kV 26 MW 0.93
23 PQ 69 kV 2.5 MW 0.99
24 PQ 230 kV 46 MW 0.89
25 PQ 230 kV 33 MW 0.96
26 PQ 230 kV 44 MW 0.86
27 PQ 230 kV 81 MW 0.93
28 PQ 69 kV 2.3 MW 0.91
29 PQ 115 kV 15.3 MW 0.95
30 Slack 115 kV 0 MW 1.0 400 MW / 0.9 pf
31 PQ 230 kV 74 MW 0.91
Based on the data given:
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y Taking into consideration the load allocated above, select appropriate transmission linevoltage ratings, MVA ratings, and distances necessary to supply these loads. Then
determine the per unit transmission line impedances for the lines shown on the single-linediagram. Show your calculations.
y Select appropriate transformer voltage and MVA ratings, and determine the per unit
transformer leakage impedances for the transformers shown on the single-line diagram.y Develop a generation schedule for the 4 generator buses.y Show on a copy of the single-line diagram in per unit the line impedances, transformer
impedances, generator outputs, and loads that you have selected above.y Using the power flow program, run a base-case power flow. In addition, to the printed
input/output data files, show on a separate copy of the single-line diagram the per unit bus voltages as well as real and reactive line flows, generator outputs, and loads. Flag
any high/low bus voltages for which 0.95 <= V <= 1.05 pu is violated, and any lines or transformer flows that exceed normal ratings.
y If the base case shows any high/low voltages or ratings exceeded, then correct the basecase by making changes. Explain the changes you have made.
y R epeat the power flow program step above.
R erun the power flow program and showyour changes on a separate copy of the single-line diagram.
y Provide a typed report and summary of your results along with your calculations for thework above, the printed power flow input/output data, and copies of the single-line
diagram. The report is to be in standard professional engineering format.
Graduate Students:
After completing the above tasks, select one of the two following activities.
y Select three buses on the system, and conduct a fault analysis for each of the buses. In
the analysis, consider the four different types of faults that could happen.D
etermine thefault current contribution in each transmission line or transformer to the bus fault.
y Conduct an economic dispatch study on the system. Determine the loss coefficients.Does the dispatch violate any of the line or transformer limitations.
Branch Data
Start Bus End Bus Circuit Type Line Distance Transformer Tap Range
1 2 Line 50 km
1 5 Line 20 km
2 3 Transformer 0.90 to 1.10 in steps of 2.5%
3 4 Line 35 km
4 8 Line 25 km
5 6 Line 45 km
6 7 Line 40 km
7 9 Transformer 0.90 to 1.10 in steps of 2.5%
7 24 Line 35 km
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8 9 Transformer 0.90 to 1.10 in steps of 2.5%
8 11 Line 60 km
8 19 Line 30 km
8 29 Line 55 km
9 10 Line 80 km
11 12 Line 65 km
11 13 Transformer 0.90 to 1.10 in steps of 2.5%
13 14 Line 70 km
14 15 Transformer 0.90 to 1.10 in steps of 2.5%
14 16 Transformer 0.90 to 1.10 in steps of 2.5%
15 17 Line 45 km
15 26 Line 65 km
16 17 Line 70 km16 18 Transformer 0.90 to 1.10 in steps of 2.5%
19 20 Transformer 0.90 to 1.10 in steps of 2.5%
19 21 Line 50 km
21 22 Line 55 km
23 24 Transformer 0.90 to 1.10 in steps of 2.5%
24 25 Line 25 km
25 26 Line 60 km
26 27 Line 40 km
26 31 Line 55 km
27 28 Transformer 0.90 to 1.10 in steps of 2.5%
29 30 Line 65 km
30 31 Transformer 0.90 to 1.10 in steps of 2.5%
Standard Transformer Sizes
Voltage Class KVA Rating
10, 15, 25, 50 MVA
Standard Transformer Impedance Range
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230 kV Double Circuit Steel
Tower