SOLAR STREET LIGHTING SYSTEM SHOULD BE USED TO DECREASE THE ENERGY DEMAND IN HIGHWAYS ALSO RENEWABLE ENERGY SOURCES CAN BE UTILIZED MORE AND MORE TO REDUCE THE MASSIVE USES OF FOSSIL FUELS WHICH ARE EXTINGUISHABLE.

1. BY
SUBHANKAR DASH(1241019177)
NISHA KUMARI(1241013049)
SIDDHARTH S.PATI(1241013256)
KUMAR SANKET(1241013253)

2.  In world now the energy demand increases rapidly.
 So to fulfilling energy demands more fossil fuels are
used which will be extinguish if they are used at such a
rate.
 So renewable energy are need to be used more and
more as they are freely available and also adequate.
 Also uses of greener power reduces pollution and
global warming.
INTRODUCTION

3. OBJECTIVE:
 To Compensate the growing energy demand by using
Renewable energy source as solar .
 To light the streets of rural areas with transmission lines as
well as solar power where there is so many power cuts
occurs.
 Low power consumption, Longitivity, Reliability our
product .
 Low maintenance.

4. WORKING PRINCIPLE:
 In the street lighting we have the charge controller circuit
which is charged the battery in the day time by solar panel
and by conventional power at night.
 This switching between conventional and solar occurs
through the relaying action.
 The relaying action is done by two NOT logic operated
transistor through LDR .
 Photoconductive device LDR (Light Dependent Resistor)
whose resistance changes proportional to the extent of
illumination, which switches ON or OFF the LED during
day and night and also Dusk to Dawn operation is done.

5. LAYOUT:

6. MAIN COMPONENTS USED:
The main components used in our project are as
following:
 SOLAR PANEL
 POWER CIRCUIT
 BATTERY
 LDR
 LED ASSEMBLY

7. SOLAR PANEL:
 Solar modules use light
energy (photons) from
the sun to generate
electricity through
the photovoltaic effect.
 In this project we are
using a solar panel of
20watt which can give
voltage upto 21.5v and
having maximum
current of 1.29 amp.

8. DETERMINATION OF RATING OF SOLAR PANEL
 Here We are using LED assembly of 16 watt
 The operating time was designed 2hrs/day.
 So accordingly rating of the panel is designed.
Here 32watt-hr energy is required by load.

9. Panel Watt-Peak Required= Watt-hour needed per day/Global Solar
Radiation (Equivalent Hours)
Panel Watt- Peak required=32/5 =6.4 Watt(peak) :Considering Global
solar radiation for 5hours
Panel Watt-Peak required after considering the efficiency of the system
and the module = Calculated Peak-Watt required/Total system
efficiency*PV performance efficiency
= 6.4/(0.7*0.7)
= 13.06 Watt(peak)
= 14 Watt(peak) approx.
Considering total system efficiency = 70% and PV Performance efficiency
= 70%

10. BATTERY:
 It works as a storage unit.
solar and conventional
sources charge the
battery through charge
controller circuit.
 We are using here
12v,7Ah battery.

11. DETERMINATION OF RATING OF BATTERY:
The selection of battery depends on two factors:
 Depth of discharge of battery (DOD).
 System voltage
In solar PV, the deep discharge batteries are used with
DOD in the range of 60% and considering 12v systems
for this calculation.

12. Battery Capacity(Ah) = Daily load(Total Watt-hour per day) /
Nominal battery
voltage
Battery Capacity = 32/12
= 2.67Ah
Actual battery capacity required = Calculated battery capacity/
% of depth of discharge*Battery efficiency
=2.67 / (0.6*0.85)
=5.23 Ah
= 6 Ah(approx.)

13. LDR(LIGHT DEPENDENT RESISTOR):
 Photo resistors are
light sensitive resistors
whose resistance
decreases as the
intensity of light they
are exposed to
increases.

14. LED(LIGHT EMITTING DIODE):
 LEDs have more lifespan than CFL lamps.
 They consume less energy.
 Unlike conventional lamps they can be recycled.
 Less Maintenance & less heat generation.

15. CIRCUITARIES:
Here four circuits are used with proper functioning.
 CHARGE CONTROLLER CIRCUIT
 DUSK TO DAWN OPERATION CIRCUIT
 SWITCHING CIRCUIT BETWEEN CONVENTIONAL
AND SOLAR
 POWER CIRCUIT

16. DUSK TO DAWN CIRCUIT:

17. CHARGE CONTROLLER CIRCUIT:

18. SWITCHING CIRCUIT:

19. POWER CIRCUIT:

20. VARIOUS IMPACTS:
Impact of engineering solution in economic context
 During the entire course of completion of the project, we have
always kept in mind the price constraint. We have succeeded in
designing a project that is affordable and such that the cost of
the product is justified by its fair performance. Hence, we can say
that this project is economically effective.
Impact of engineering solution in environmental context
 In our project we have utilized the most convenient source of
energy that is the energy that is harnessed from the sun. The sun
gives enormous amount of heat which is received by the solar
panel and converts it into electrical energy. As we are using the
renewable source of energy it does not cause any kind of
pollution and it is very eco-friendly.

21. CNTD…
Impact of engineering solution in global context
 The undertaken project aims at customer satisfaction and hence
succeeds in fulfilling all the global aspects. The global impact of
our project is positive as it ensures user safety and provides
flexibility at the same time. It can be used anywhere and can be
used by anyone i.e. can be used easily n in an effective and
efficient way.
Impact of engineering solution in societal context
 Assessing societal impacts requires both quantitative and
qualitative measurements of the impact of a proposed
development. The basic idea behind this project revolves around
the needs of its customer. The project has been designed for the
benefits of the society. It helps in societal development as it
requires low cost. Initially we need somewhat high cost but the
maintenance is very low hence it benefits the society.

22. FINAL PRODUCT:

23. NEEDS OF IMPROVEMENTS:
 Here maximum power point tracking can be used to
fetch maximum power.
 Digital relay can be used to do precise and accurate
operation.
 Micro controller can be used for ease & accurate
operation.

24. ADVANTAGE:
Complete elimination of manpower.
Reduced energy costs
Reduced green house gas emission
Reduced maintenance cost
Higher community satisfaction

25. DISADVANTAGES
 Chances of theft of solar panel in case of rural areas so
some security aspects are there.
 High initial cost.

26. CONCLUSION:
This project of ‘SOLAR STREET LIGHTING’ is a cost
effective , practical , eco friendly and the safest way to save
energy.
 It clearly tackles the two problems that world is facing
today, saving of energy and also disposal of incandescent
lamps, very efficiently.
 According to statistical data we can save more electrical
energy that is now consumed by the highways.

27. REFERENCE:
The 8051 Microcontroller and Embedded systems by
Muhammad Ali Mazidi and Janice Gillispie Mazidi ,
Pearson Education.
Electronic Devices and Circuit Theory, Boylestad.
Sensors: Advancements in Modeling, Design Issues,
Fabrication and Practical by Subhas Chandra
Handbook of Modern Sensors: Physics, Designs, and
Applications by Jacob Fraden.
www.ieeexporer.ieee.org, www.alldatasheets.com,
www.wikipedia.com,www.vegakitindia.com

28. THANK YOU