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SIZING OF SOLAR PV SYSTEMS FOR OFFICE LIGHTING APPLICATIONS. Authors Rajashekar P. Mandi Udaykumar R. Yaragatti . PRESENTER Arun Kumar Datta. Central Power Research Institute, Bhopal. 280 W solar PV plant is installed at CPRI. Solar PV System . GRID. PV ARRAY.
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SIZING OF SOLAR PV SYSTEMS FOR OFFICE LIGHTING APPLICATIONS Authors Rajashekar P. Mandi Udaykumar R. Yaragatti PRESENTER Arun Kumar Datta. Central Power Research Institute, Bhopal. 280 W solar PV plant is installed at CPRI
Solar PV System GRID PV ARRAY POWER CONDITIONER INVERTER/ BATTERY CHARGER CONTROLLER AC DB DC DB Lamp load DB – Distribution Board PV – Photovoltaic BATTERY Figure 2: Schematic of Solar PV system
System sizing • Base solar photovoltaic panels & other accessories : Rs. 1,80,000 per kW • (without inverter & battery storage) • Grid – inverter power system (without battery banks) : Rs. 39,000 per kW • Battery size including charge controller for 1 hour autonomy : Rs. 13,500 per kWh
Techno-economics for Scheme 1: 4.366 kWh/m2-day (during the month of July) Total Energy (TFL): 521 kWh/y Total Energy (LED): 193 kWh/y
Techno-economics for Scheme 2: 6.739 kWh/m2-day (during the month of March) Total Energy (TFL): 521 kWh/y Total Energy (LED): 193 kWh/y
Techno-economics for Scheme 3: 5.171 kWh/m2-day Total Energy (TFL): 521 kWh/y Total Energy (LED): 193 kWh/y
Results • Energy estimated (Solar PV) : 454 kWh/y (87.1 %) • Energy estimated (Grid) : 67 kWh/y (12.9 %) • Energy generated by solar PV : 403.7 kWh/y (92.25 %) • Energy import from grid : 33.9 kWh/y (7.75 %)
CONCLUSIONS • Sizing of solar PV system with lowest monthly average daily solar radiation requires smaller size of PV but higher dependence on grid power. • Sizing of solar PV system with highest monthly average daily solar radiation requires higher size of PV but lower dependence on grid power and the overall cost will be high. • Optimum sizing of solar PV system will reduce the overall cost and project become more attractive. • Use of LED lamps for the office buildings reduce the specific size of solar PV system for the given illumination level output. • Installation of solar PV system with LED lighting system will be economically viable.
Thank you CPRI Arun Kumar Datta. CPRI, Bhopal. email:rajashekarmandi@yahoo.com & mandi@cpri.in