Intelligent microgrid demonstrator   angelo gattozzi - may 2010
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Intelligent microgrid demonstrator angelo gattozzi - may 2010 Presentation Transcript

  • 1. Intelligent Micro-Grid Demonstrator
    R. E. Hebner, J. D. Herbst, A. L. Gattozzi
    Center for Electromechanics
    University of Texas, Austin
    May 19, 2010
  • 2. Electric ship Micro-grid
    Close similarity but with unique features
    Special characteristics of ship’s power system:
    Wide variety of loads, from continuous duty to pulsed loads
    Minimal available margin of generated power over total required
    Greater reliance on energy storage to supply intermittent loads
    Many aspects are very similar
  • 3. Micro-grid Technical Challenges
    Increasing incidence of power electronics
    Co-existence of ac and dc sections
    Presence of non-traditional energy resources
    More decentralized control system
    Lack of experimental data especially at MW power levels
    CEM-UT micro-grid demonstrator attempts to bridge this gap
  • 4. CEM-UT Micro-Grid Demonstrator
  • 5. DC Bus:
    2 parallel AWG535 DLO cable
    2 kV, 1.6 kA, 31 m long
  • 6.
  • 7.
  • 8. Preliminary Investigations
    Many components developed over time and tested individually
    Computer models of components
    Models of various topologies
    Comprehensive model of micro-grid being developed
    Preliminary tests on sub-assemblies
    System stability issues
  • 9. Stability of Common DC Bus Topology
  • 10.
  • 11.
  • 12. Constant Power Load Instability
    Constant power load fed by dc source:
  • 13.
  • 14.
  • 15. (16)
    (21)
  • 16.
  • 17. Experimental Test
  • 18. 15 kW
    21.5 kW
  • 19. Experimental verification work
    • CEM has all the major building blocks of a ship’s electrical power system
    • 20. An electrical micro-grid is being assembled to collect experimental data