Concept of Microgrid and CHP system
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Transcript of Concept of Microgrid and CHP system
Micro gridSelf sustainable power
Small scale power supply network
Consist of distributed energy resource(DER)
Low voltage distribution
Micro grid structure
DEMAND SIDE MANAGEMENT
Parts of micro gridDistributed energy resource(DER)
Load
Storage system
Controller
point of Common coupling
Load &Point of common coupling
Critical load: uninterrupted power supply
Non-critical load(controllable):load can be
disconnected or shed accordingly.
Point of common coupling: point in the electric circuit
where a micro grid is connected to a main grid
Point of common coupling
Micro grid operation modeGrid connected mode
Connected through point of common coupling
Bi-directional power flow
Economic benefit by supplying excess power to main grid
Reduce the fuel cost using the power from main grid during
low(night) load
Island mode
Isolated from main grid
Combined Heat and Power (CHP)
Generation of power and heat sequentially from same
heat input
Maximum utilization of heat
Application:Fuel cell, sugar mill.
geothermalbiogasbiomass
Combine heat and power (CHP)
Features of CHPProtection against rising fuel prices
More efficient than separate generation of electricity
and heat.
Lower operating cost- higher efficiency translates to
reduced fuel consumption.
Very efficient technology.
Need of micro gridEconomical aspect
Transmission loss
Running cost
Environmental aspect
Large land space
Emission due to conventional generator
Climate change
Micro grid featuresBetter power quality
High reliability
Utilize more renewable energy sources
Less emission (Environmental friendly)
Low installation cost
Less land space
Micro grid advantageAbility to separate from main grid during disturbance
Reduce the emission
Reduce electricity cost
Micro grid challengesMaintenance and space required for battery bank
Synchronization with main grid
Uncertainty of wind and PV system
Protection of micro grid
References Review of Microgrid Technology by Hartono BS,
Budiyanto and Rudy Setiabudy Faculty of
Engineering. Universitas Indonesia Depok 16424.
Microgrid Economic Optimal Operation of the
Combined Heat and Power System with Renewable
Energy by W. Gu, Member, IEEE, Z. Wu, and X.
Yuan.