EVs Sistema de Potencia
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Transcript of EVs Sistema de Potencia
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7/31/2019 EVs Sistema de Potencia
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Mateo Alejandro Corts
Universidad Nacional de Colombia
EVs( electric vehicles)
and its mpact on the
power system
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Outline
The ElectricVehicle (EV)
Impact onpower system
Possiblesolutions
Summary
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EVs (Electric Vehicles)
Rationale
Efficiency
Types of EVs
Batteries
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Rationale: Why Evs?
Green wave
Eco-friendly and efficient
technology
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Rationale: Why Evs?
Source: Tesla Motors.
(http://www.teslamotors.com/goelectric/efficiency)
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EVsclassification
EV types:
http://www.hydroquebec.com/
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Source: Technology Roadmap, Electric and plug-in hybridelectric vehicles. International Energy Agency
Energ
yand
pow
erofd
ifferent
batterytypes
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Source: International Energy Agency (IEA)
EVspenetratio
nforecas
t
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Impact on Power System
(distribution)
Pilot projects
Studies and simulations
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7/31/2019 EVs Sistema de Potencia
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Problems and negative impacts?
Increasing energy demand (possibleneed ofmore substations)
THD harmonic distortion- (shorterdistribution transformers lifecycle)
Distribution transformers overload
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They depend on
Chargers design
Amount of electric vehicles
in use
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Distribution transformer loading at different penetrationlevels of PEVs
K.J. Yunus, M. Reza, H. Parra, K. Srivastava, Impacts of Stochastic
Residential Plug-In Electric Vehicle Charging on Distribution Grid,
ISGT 2012, Washington, USA.
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Solutions and workarorunds
Improving design
Control of charging cycles
Smart Grids
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Technology and manufacturing
changes in chargers have madepossible a reduction in THD, from
50 % to 6 % average THD when
the charge begins and from 70%
to 28% at the end of charging.
EV Chargers improvements
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Smart grids adoption should
allow integration of
automated metering and
variable energy prices anddemand; achieving an
optimum EVs charging
scheme.
Smart grids
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Situational Awareness
Applied to power systemsand to the power grid
operation, can help in
obtaining more reliable
and accurate forecasts
regarding future demand,infrastructure and energy
capacity of the system.
Knowing what is
going on around
you !!
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Summary
EVs penetration in the near future
Situational awareness of the grid
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Important ideas
EVs use is not that spread forhaving evident effects on the
grid right now.
Several research done about it
shows distribution transformers
could become overloaded due
to exceeding of their power-
handling capacity.
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Important ideas
Improved EVs chargers havelowered THD.
Smart grids may allow control
of charging cycles, reducingpeak demand.
EVs future widespread use
should require additionalinfrastructure
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?
Any
Questions ??Suggestions?
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References
1. Mario Alberto Ros. Impact of Electric Vehicle in Distribution Systems. Smart
Grids on electric Mobility (SGeM). Universidad Nacional de Colombia, 2012.
2. Renato Cspedes. Electrical Energy Distribution and Smart Consumers. SmartGrids on electric Mobility (SGeM). Universidad Nacional de Colombia, 2012.
3. Pecan Street Project. http://www.pecanstreet.org/
4. Fabian M Uriarte, Robert Hebner. Simulation of Pecan Streets Smart Grid: A
forecast of the impact on Austin energy. Center for Electromechanics,
University of Texas, 2012. http://www.utexas.edu/research/cem/
5. J. Carlos Gmez, Medhat M. Morcos. Impact of EV Battery Chargers on the
Power Quality of Distribution Systems. IEEE Transactions On Power Delivery,
Vol. 18, No. 3, July 2003.
http://www.pecanstreet.org/http://www.utexas.edu/research/cem/http://www.utexas.edu/research/cem/http://www.utexas.edu/research/cem/http://www.utexas.edu/research/cem/http://www.pecanstreet.org/http://www.pecanstreet.org/http://www.pecanstreet.org/ -
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Thanks !