EE403 Distributed Generation & Smart Gridspeople.rajagiritech.ac.in/sites/default/files/unni... ·...
Transcript of EE403 Distributed Generation & Smart Gridspeople.rajagiritech.ac.in/sites/default/files/unni... ·...
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Dr. Unnikrishnan P.C.
Professor, EEE
EE403 Distributed Generation & Smart Grids
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Module I
Distributed generation : Introduction - Integration of distributed generation to Grid – Concepts of Micro Grid - Typical Microgrid configurations - AC and DC micro grids - Interconnection of Microgrids - Technical and economical advantages of Microgrid - Challenges and disadvantages of Microgrid development
Smart Grid: Evolution of Electric Grid - Definitions and Need for Smart Grid, Opportunities, challenges and benefits of Smart Grids
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What is a Micro Grid?
The Micro-grid can be assumed as a cluster of loads and micro sources operating as a single controllable system that provides power to its local area
Normally operates connected to and synchronous with the traditional centralized grid, through a single point of common coupling (PCC) with the utility grid
Distributed generators and loads in the neighborhood can form micro-grids which can work parallel to grid or operate in islanded mode providing UPS services
A Complete Solution for rural electrification
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Community Microgrid
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Conceptual Micro grid
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Why Microgrid?When it demands a reliable source of power for your
critical infrastructure
Resilience :
Resilience is the ability of a system to maintain its
functionality and behaviour after a disturbance.
Green power with minimum intervention of fossil fuels
Complements main grid – especially during peak demands
Enhances social well being
Rural electrification to areas where no electric grid or reliable power
During disasters when critical facilities fail to operate
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Microgrid Configuration
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Micro Grid Configuration
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Micro Grid Configuration
• Group of radial Feeders
• Micro sources like CHP
• Point of Common Coupling (PCC)
• Power electronic-interface- e.g. rectifiers, Inverters.
• Storage
• Critical and non critical loads
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Micro Grid Configuration
• Operation & Control of Microgrids is controlled and co-
ordinated by Microsource Controllers (MCs) and Central
Controller (CC)
(1)Microsource Controller (MC):
• Control the voltage profile at load end and power flow
of the microsource independently.
• Ensures each microsource supplies its share in
standalone mode.
• Participates in Demand side management (DSM), load
tracking management and economic generation
scheduling by controlling the storage devices.
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Micro Grid Configuration
(2)Micro Grid Central controller (MGCC Or CC):
Overall Control, maintain power quality, Provides
power dispatch and voltage set points for all MCs,
Coordinate protection.
Energy Management Module (EMM) and Protection
Coordination Module (PCM) are its functional
modules.
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Micro Grid Configuration
Functional modules of CC
Energy Management Module EMM:
Provides set points for frequency, voltage, active and
reactive power output to each MC
Protection Coordination Module PCM:
Protection coordination to faults in grid, microgrid and
Loss of Grid (LOG). Disconnects grid in case of LOG,
Disconnects feeders to stabilize, Resynchronize
Microgrid to utility grid
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Thank You