1. Solar PV Power Plant Design Considerations
Dr. Sudhir Kumar Chief Executive Green Energy Solutions, Pune Mob:

2. Sample Case Of 2 MW SPV Power Project At Burla, Odisha, India
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3. Module Configuration
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4. Mounting structure summary
Plant Capacity (MW) 2
Module peak power (Wp)
250
Modules per mounting structure 20
Total mounting structure
400
Total no of foundation footings
1600
Particulars
Specification
Type
Ground Mounting
Material
Galvanized/ Aluminum MS
Coating
Enamel
Tilt angle
21 degree
Concrete
PCC(1:2:4)
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5. Inverter Configuration

6. Energy Estimation
Power generation kWh calculated using PVSyst software
The radiation data file generated from Meteonorm software in appropriate format imported in PVSyst software
Detailed analysis of design parameters and resultant output along with stage-wise losses are carried out
The screen shots of
“simulation parameters”,
“main results”
“loss diagram” reproduced
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7. Dr Sudhir Kumar
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8. Dr Sudhir Kumar
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9. Dr Sudhir Kumar
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10. Dr Sudhir Kumar
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11. Annual energy production of 2981.51 MWh/year
Analysis
20 modules of 250 Wp in series
400 parallel strings
Total module area of m2
Total 8000 no of modules
Inverter characteristics and loss factors have been taken care for designing purpose
Annual energy production of MWh/year
Specific production of 1491 kWh/kWp/year
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12. Maximum generation is observed in summer months
Analysis
Performance ratio of 72.4 %
Maximum generation is observed in summer months
Reasonably good generation in winter
 The loss diagram shows
Various losses encountered by the power plant practically in the field considered
PV array efficiency 11.54%
System efficiency 11.03%
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13. Decide the spacing between two rows of the arrays
Shading Analysis
Decide the spacing between two rows of the arrays
Optimisation: Minimum shadow face by the adjacent array during the whole day
Maximize the power output
Efficient utilization of the space
“Sustainable by Design”
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14. Source: http://susdesign.com/panel_shading/index.php

15. For Burla site:
6 m between the two rows will give maximum output and efficient utilization of space
Panel height of 330 cm and panel thickness of 4.6 cm
Panel tilt angle 210 facing South will offer minimum shading
Practically zero shading between 8 am and 4 pm
Matches with the fact that Odisha falls in eastern part of the country which has early sunrise and sunset.
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16. Single Line Diagram
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17. Plant Layout
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18. Transformers Required Total capacity of power project = 2000 kWp
The proposed power transformer will be with voltage level of 0.415/33 kV. The output of these step-up transformers will be fed to 33 kV level network.
Transformers Required
Total capacity of power project = 2000 kWp
Power Transformer capacity required to feed 2 MW power = (2 x 110%) = 2.5 MVA
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19. Thank You
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