RESIDENTIAL SCALE LO VOLTAGE DISTRIBUTION AND ON GRID POWER SUPPLY

1. Residential scale lo voltage DC distribution and on-grid
power supply using solar photovoltaic energy resource
DEPARTMENT OF ELECTRICAL ENGINEERING
RAJKIYA ENGINEERING COLLEGE
AMBEDKARNAGAR
GUIDED BY:
MS. SHIKHA CHOUDHARY
(Assistant Professor)
PRESENTED BY:
SHIVANGEE (1473720037)
KAMINI SINGH (1473720016)
KUMARI PRIYANKA (1473720017)

2. CONTENTS
Introduction
Objective of project
Advantage of DC transmission over AC
transmission
Solar power system
Components
Block diagram

3. Advantages of solar energy
Disadvantages
MATLAB
Simulation
Results
Future scope
Conclusion
References

4. INTRODUCTION
Increasing demand of renewable energy.
Suitable renewable energies are DC-based.
Now these days DC loads is increasing in
the buildings, workplaces and homes.
Removal of AC-DC & DC-AC convertors.

5. OBJECTIVE OF PROJECT
 To size the ratings of solar PV system, to meet the
requirement of particular residential application.
 To analyze the steady state and dynamic
performance characteristics using suitable modeling
and analysis.
 To perform extensive simulation studies for
performance evaluation of proposed system.
 To analyze load flow in LVDC distribution.

6. ADVANTAGE OF DC TRANSMISSION
OVER AC TRANSMISSION
 DC systems are free from inductance, skin effect, dielectric losses, and
interference with communication system.
 DC system has a less potential stress over AC system for same voltage.
 This reduces the line conductor weight.
 DC distribution systems are intrinsically more efficient than their AC
counterparts, since in DC there are not reactive powers or skin effects.
 Interconnecting and distributing the energy between mostly DC-based
agents (sources, loads, storage) through a DC power system avoids
unnecessary DC-AC and AC-DC conversions which are a wasteful of
energy.

7. SOLAR POWER SYSTEM
 The use of solar energy is usually divided into two main areas:
1. solar thermal and
2. solar electricity.
 Solar power is the conversion of sunlight into electricity, either directly
using photovoltaic (PV), or indirectly using concentrated solar power
(CSP).
 The various forms of solar energy solar heat, solar photovoltaic, solar
thermal electricity, and solar fuels offer a clean, climate-friendly, very
abundant and in-exhaustive energy resource to mankind.

8.  Useful in remote applications with small power
requirements.
 As PV power becomes more affordable, the use of
photovoltaic for grid-connected applications is
increasing.

9. COMPONENTS
PV array
Blocking diode
Power conditioner
Battery
Inverter/Converter
load

10. BLOCK DIAGRAM OF PV SYSTEM
PV Solar
Array
Battery
Storage
Power
Conditioner
Inverter/
Converter
Local
load
Utility
Grid
Blocking diode

11. The semiconductor device that transforms
solar light in electrical energy is termed as
‘Photovoltaic cell’.
PV cells are grouped in larger units called
PV modules.
A solar cell is a non-linear device and can be
represented as a current source model.

12. Fig: Simplified equivalent circuit of a photovoltaic cell.

13. ADVANTAGE OF SOLAR ENERGY
Renewable energy source.
Reduces requirement of land for solar
power.
Reduces electricity bills.
Diverse applications.
Low maintenance costs.

14. DISADVANTAGES
 The initial cost of purchasing a solar system is fairly high.
 Weather dependent.
 Solar energy storage is expensive.
 There are also some toxic materials and hazardous
products used during the manufacturing process of solar
photovoltaic, which can indirectly affect the environment.

15. MATLAB
MATLAB (Matrix Laboratory) is a tool for
numerical computation and visualization.
Simulink is a block diagram environment for
multi domain simulation and Model-based
design.
In MATLAB simulation the same model or
topology can be tested with the real time
hardware ratings and device specifications.

16. The applications of this software are really
prove their worth through their real time
applications.
It supports system-level design, simulation,
automatic code generation and continuous
test and verification of the system.

17. SIMULINK MODEL

18. Important parts of simulink model are :
PV array
Single phase DC/AC converter
Inverter control
load and utility grid

19. RESULTS
Fig: Grid voltage
Fig: Grid current

20. Fig: Leakage current
Fig: Irradiance

21. Fig: Mean DC voltage
Fig: Mean DC power

22. FUTURE SCOPE
 Photovoltaic roof-top installations at the tail-end of
the grid can enhance grid-stability and reduce losses.
 Savings in land requirement and costs.
 Reducing the dependence on fossil fuels.
 Addressing environmental issues are a priority.
 The continuing decrease in cost of PV arrays and the
increase in their efficiency imply a promising role for
PV generating systems in the near future.

23. CONCLUSION
With the steady advancement of technology in the
rapidly expanding field of solar energy, more and
more individuals have started installing solar systems.
Because of the different types of solar PGS being
installed across the world today, the on grid or the grid
tied system most widely chosen.

24. REFERENCES
1. https://www.greenmatch.co.uk/blog/2014/08/5-
advantages-and-5-disadvantages-of-solar-energy
2. https://en.wikipedia.org/wiki/Solar_energy
3. http://www.nwwindandsolar.com/solar-power-in-
seattle-and-the-northwest/how-do-solar-systems-
produce-energy/
4. http://ieeexplore.ieee.org/abstract/document/415307
3/
5. https://www.google.co.in/search?q=on+grid+solar+s
ystem&sourceid=chrome&ie=UTF-8
6. https://en.wikipedia.org/wiki/Photovoltaics

25. QUERIES???
THANK
YOU…