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UTILITY CONNECTED MICROGRID BASED DISTRIBUTION GENTRATION SYSTEM FOR POWER FLOW MANAGEMENT

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UTILITY CONNECTED MICROGRID BASED DISTRIBUTION GENTRATION SYSTEM FOR POWER FLOW MANAGEMENT

  1. 1. 18 November 2015 1 GUIDED BY : PRESENTED BY : Prof. Rahul Vyavahare Shrikant Bhansali UTILITY CONNECTED MICROGRID BASED DISTRIBUTION GENTRATION SYSTEM FOR POWER FLOW MANAGEMENT
  2. 2. CONTENT  Introduction  Publications  Paper Objectives  Block Schematic  Advantages  Future scope  Conclusion  References 18 November 2015 2
  3. 3. What is DGs? In distribution levels, many smaller renewable generators (e.g. photovoltaic, fuel cells, micro hydro etc.) will be connected to the networks. These are called distributed generators (DGs) or distributed energy resources (DERS). What is microgrid ? A microgrid is a cluster of loads and microsources operating as a single controllable system that provides power to its local area.
  4. 4. Introduction This paper proposes a method for power flow control between utility and microgrid through back-to-back converters, which facilitates desired real and reactive power flow between utility and microgrid.  In mode-1, specified amount of real and reactive power are shared between the utility and the microgrid through the back-to-back converters.  Mode-2 is invoked when the power that can be supplied by the distributed generators (DGs) in the microgrid reaches its maximum limit. In such a case, the rest of the power demand of the microgrid has to be supplied by the utility
  5. 5. Publication  Ritwik Majumder, Student Member, IEEE,  Arindam Ghosh, Fellow, IEEE,  Gerard Ledwich, Senior Member, IEEE,  Firuz Zare, Senior Member, IEEE  Date of publication :2 MAY 2010 18 November 2015 5
  6. 6. 18 November 2015 6 Objectives  To improve power sharing techniques in microgrid with converter interfaced sources  To improve power management system and reliability of the microgrid  To achieve superior power sharing in rural network with high R/X lines  To facilitate load frequency control of the microgrid and a smooth transition between grid in connected
  7. 7. 18 November 2015 7 Block Schematic
  8. 8. 18 November 2015 8 Advantages  Stability of grid system is achieved to great extent  The power quality at consumer premises can be improved  Economical based operation  One of the major advantages of the back-to-back converter connection is that it can provide isolation between the utility and the microgrid, both for voltage and frequency fluctuations.
  9. 9. FUTURE SCOPE OF WORK  Protection of back to back converters in case of fault can be investigated  The improvement can be achieved by selection of more appropriate input signals or controller gains  Modified drop control can be derived for frequency dependent load  Communication can be used to correct the reference quantities  The reliability in a microgrid can be improved with the application of back-to- back converters for bidirectional power flow
  10. 10. Conclusion  Power sharing can be achieved with dropping output voltage angels of the converters  The quality of distributed generation can be improved significantly by proper reference generation for the DG’S  The reliability in a microgrid can be improved with the application of back-to-back converters  A low band width communication can also improve power sharing significantly
  11. 11. References  [1] IEEE Standard for Interconnecting Distributed Resources with Electric Power Systems," IEEE  Std 1547-2003 , vol., no., pp.0_1-16,  2003URL:http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=1225051&isnumber=27496  [2] R. H. Lasseter, "MicroGrids," in Power Engineering Society Winter Meeting, 2002. IEEE, 2002,  pp. 305-308, vol.1.  [3] M. Milosevic, P. Rosa, M. Portmann, and G. Andersson, "Generation Control with Modified  Maximum Power Point Tracking in Small Isolated Power Network with Photovoltaic Source," in  Power Engineering Society General Meeting, 2007. IEEE, 2007, pp. 1-8. 18 November 2015 11
  12. 12. Thank you 18 November 2015 12

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