POWER QUALITY ENHANCEMENT
IN AUTONOMOUS MICROGRID
USING ANT COLONY OPTIMIZATION

by
PRABAAKARAN. K,
Assistant Professor (E...
ABSTRACT


To analyze & improve the Power Quality of Microgrid.



Voltage, Frequency regulation and Power Sharing are t...
INTRODUCTION


Microgrid – Cluster of Distributed Generation (DG)
Units that are interfaced with Electrical Distribution
...
DISTRIBUTED GENERATION (DG)
Emerging concept to Decentralize the Management of
Electricity Production.
 Seems Distributed...
STRUCTURE OF MICROGRID

5
OPERATING MODES
GRID CONNECTED MODE
 Here Micro sources are connected to the Grid.
 They share the loads in Grid
AUTONOM...
ARTIFICIAL INTELLIGENCE TECHNIQUES
Genetic Algorithm (GA)
 Ant Colony Optimization (ACO)
 Particle Swarm Optimization (P...
ANT COLONY OPTIMIZATION (ACO)
ACO – Natural behavior of Ant- develops mechanisms
of co-operation and learning
 Population...
ANT COLONY OPTIMIZATION


Ants (blind) go through the food while laying down
pheromone trails



Shortest path is discov...
Behaviour of ANT (ACO)

10
FLOW CHART

11
DESIGN OF AUTONOMOUS MICROGRID

12
PROPOSED POWER CONTROLLER

13
PROPOSED CURRENT CONTROLLER

14
BLOCK DIAGRAM OF SIMULINK
Pulse signal

Constant DC
Source

Control Signal

Voltage Source
Inverter
LOAD

Constant DC
Sour...
KP & KI SEARCH
PROCESS

16
LOAD ACTIVE POWER

17
LOAD REACTIVE POWER

18
DG1 ACTIVE &
REACTIVE POWER

19
DG2 ACTIVE &
REACTIVE POWER

20
VOLTAGE REGULATION

21
FREQUENCY REGULATION

22
CONCLUSION & FUTURE WORK


Proposed controller shows excellence response
and the
simulation results validated that the Po...
REFERENCES


Waleed Al-Saedi,et al, “Power quality enhancement in autonomous
microgrid operation using PSO”,Elsevier 2012...


Yasser Abdel-Rady Ibrahim Mohammed. Et al, “Seamless formation and
robust control of distributed generation microgrids ...
PUBLICATION & PRESENTATION










Presented & Published a paper titled in “Power Quality Enhancement in
Microgrid ...
27
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107 prabaakharan

  1. 1. POWER QUALITY ENHANCEMENT IN AUTONOMOUS MICROGRID USING ANT COLONY OPTIMIZATION by PRABAAKARAN. K, Assistant Professor (EEE) SKP Engineering College Tiruvannamalai Tamilnadu
  2. 2. ABSTRACT  To analyze & improve the Power Quality of Microgrid.  Voltage, Frequency regulation and Power Sharing are the main performance parameters.  Ant Colony Optimization is an intelligent searching algorithm that is applied for real-time self-tuning of the Power control parameters. 2
  3. 3. INTRODUCTION  Microgrid – Cluster of Distributed Generation (DG) Units that are interfaced with Electrical Distribution network using Power Electronic devices.  It is also defined as “Subsystem of Distributed Energy Sources & their Associated Loads” 3
  4. 4. DISTRIBUTED GENERATION (DG) Emerging concept to Decentralize the Management of Electricity Production.  Seems Distributed Storage Energy System  Higher Operating Efficiency, Lower Emission level  Fuel Cells, PV Cells, Batteries, Micro turbine, Wind turbine etc.  4
  5. 5. STRUCTURE OF MICROGRID 5
  6. 6. OPERATING MODES GRID CONNECTED MODE  Here Micro sources are connected to the Grid.  They share the loads in Grid AUTONOMOUS MODE  Bypass switch open – Autonomous Mode  Micro Sources feed system responsible for Nominal Voltage & Frequency , Stability, when Power is Shared by Generation Units. TRANSITION MODE  Grid connected to Islanding mode Change of loads 6
  7. 7. ARTIFICIAL INTELLIGENCE TECHNIQUES Genetic Algorithm (GA)  Ant Colony Optimization (ACO)  Particle Swarm Optimization (PSO)  Bacterial Foraging Optimization (BFO)  Artificial Bee Colony (ABC)  Artificial Neural Network (ANN)  Fuzzy Logic Technique  Neuro - Fuzzy Technique (hybrid)  7
  8. 8. ANT COLONY OPTIMIZATION (ACO) ACO – Natural behavior of Ant- develops mechanisms of co-operation and learning  Population-based stochastic optimization technique developed by Dorigo & Stutzle in 1992  Fast convergence and efficient  8
  9. 9. ANT COLONY OPTIMIZATION  Ants (blind) go through the food while laying down pheromone trails  Shortest path is discovered via pheromone trails each ant moves at random (first)  pheromone is deposited on path  Shorter path, more pheromone rails (positive feedback system)  ants follow the intense pheromone trails  9
  10. 10. Behaviour of ANT (ACO) 10
  11. 11. FLOW CHART 11
  12. 12. DESIGN OF AUTONOMOUS MICROGRID 12
  13. 13. PROPOSED POWER CONTROLLER 13
  14. 14. PROPOSED CURRENT CONTROLLER 14
  15. 15. BLOCK DIAGRAM OF SIMULINK Pulse signal Constant DC Source Control Signal Voltage Source Inverter LOAD Constant DC Source STS GRID Voltage Source Inverter Pulse signal Control Signal 15
  16. 16. KP & KI SEARCH PROCESS 16
  17. 17. LOAD ACTIVE POWER 17
  18. 18. LOAD REACTIVE POWER 18
  19. 19. DG1 ACTIVE & REACTIVE POWER 19
  20. 20. DG2 ACTIVE & REACTIVE POWER 20
  21. 21. VOLTAGE REGULATION 21
  22. 22. FREQUENCY REGULATION 22
  23. 23. CONCLUSION & FUTURE WORK  Proposed controller shows excellence response and the simulation results validated that the Power quality enhancement is attained.  Future enhancement is to carry out “Analysis of Harmonics” in autonomous microgrid using ACO algorithm. 23
  24. 24. REFERENCES  Waleed Al-Saedi,et al, “Power quality enhancement in autonomous microgrid operation using PSO”,Elsevier 2012  Yunwei Li, Student Member, IEEE, D. Mahinda Vilathgamuwa, Senior Member, IEEE,and Poh Chiang Loh, Member, IEEE, “ Microgrid Power Quality Enhancement Using a Three-Phase Four-Wire Grid-Interfacing Compensator ” IEEE transaction 2010.  Mostafa I. Marei, Ehab F. El-Saadany and Magdy M. A.Salama, “ A Flexible DG Interfaced Based on a New RLS Algorithm for Power Quality Improvement”, IEEE System Journal, vol.6, no.1, Mar. 2012.  Tomas Hornik and Qing-Chang Zhong, “ A Current- Control Strategy for Voltage –Source Inverter in Microgrids Based on Repetitive Control”, IEEE Transactions on Power Electronics, vol. 26, no.3, Mar. 2011.  Mahesh Illindala and Giri Venkataramanan, “Frequency/Sequency Selective Filter for Power Quality Improvement in a Microgrid,” IEEE Transaction on Smart Grid, Apr.2012. 24
  25. 25.  Yasser Abdel-Rady Ibrahim Mohammed. Et al, “Seamless formation and robust control of distributed generation microgrids via direct voltage control and optimized dynamic power sharing”, IEEE Transactions on Power Electronics, vol. 27, No.3, Mar. 2012  R.H.Lasseter, “Microgrids,” in Proc. Power Eng. Soc.Winter Meeting, 2002, vol.1, pp. 305-308  Robert.Lasseter. Et al, “White paper on integration of distribution energy resource:The CERTS microgrid concepts”, California energy commission2002. 25
  26. 26. PUBLICATION & PRESENTATION      Presented & Published a paper titled in “Power Quality Enhancement in Microgrid – A Survey” in IEEE Digital library. Published a Paper titled in “Power Quality Improvement in an Autonomous Microgrid under Nonlinear Load using Control Strategies” in International Journal of Engineering & Technology, vol.5.no.4. AugSep 2013. Published a Paper titled in “ ACO adopted Control strategies for Power quality enhancement in autonomous microgrid” in International Journal of Computer Application (IJCA) vol.63. no. 13. Feb – 2013. Presented a Paper titled in “Power quality enhancement in microgrid using Ant Colony Optimization” in National Conference and won “Best Paper Award”. Article under review titled in “Survey on Microgrid: Power Quality Improvement Techniques” in Scientific Research in Hindawi Publication. 26
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