Exploring the Impact of EVs on the Power Grid with High Penetration of RES

1. Exploring the Impact of EVs on the Power
Grid with High Penetration of RES
Abdalkarim Awad, Anas Bazbaz, Almoutasem Marabeh, and Ahmad Samamra
Department of Electrical and Computer Engineering
Birzeit University, Palestine
akarim@birzeit.edu

2. Bidirectional Power Flow
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Traditional Network
Current (Future) Network

3. EVs and the Power Grid
EVs can be a problem if they are charged in an
uncontrollable way
E.g. charge the vehicles when come back to home from work (in
the early evening)
EVs can be a solution if used smartly
Charge the EVs when there is high production and low demand
Two Approaches
Optimized
Rule-based
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4. Optimization
How can we reduce the demand and losses?
Power equations are non-linear!
Power losses equations are non-linear!
Can we use linear equation and ending up reduces
losses?
Keep the demand constant
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5. Optimization
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6. Optimization: Storage
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7. Tools
OpenDSS:is used for supporting distributed resource
integration and grid modernization efforts.
OMNeT++:data communication system simulator.
INET framework: provides data communication protocols.
SGsim framework:make it possible to test and implement
smart grids.
R tool: free software environment for statistical computing
and graphics. It is used to compute the optimal time to
charge the EVs.
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8. Optimization case study
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9. Data
PV , Load BZU
3 zones:-
E1=235kWh,E2=318kWh,E3=394kWh.
P1=85kW,P2=114kW,P3=142kW.
Dr. Abdalkarim Awad 9

10. Constant demand
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11. Profit maximization
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12. Comparison
Dr. Abdalkarim Awad 12

13. SGsim case study
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SGsim:
*Open DSS :
*OmNet++:
**Application :
1)Voltage regulation.
2)Reactive power injection
**Network description :
1) EVS capacity:250kWh
2) Load: BZU housing
3) PV: 20kVA

14. Algorithm:
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15. Voltage regulation
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16. Reactive power injection
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17. Conclusion
The impact of EVs may be:
Bad (dumb charge)
Good (smart charge)
large number of EVs (such as parking stations) would have a
serious impact.
Smart charging strategies ;constant demand, profit
maximization, voltage regulation and reactive power
injection; improve the performance of the power grid:
Mange the demand
Mange the increase of electricity price
Reactive power control
Power quality
Reduce power losses
Reduce the investments in the grid modernization
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