Download - MESSIAS – PT – S5 – 0294
Frankfurt (Germany), 6-9 June 2011
MESSIAS – PT – S5 – 0294
Optimizing the EV electrical demand impact
CIRED, Frankfurt, 9 June 2011
Frankfurt (Germany), 6-9 June 2011
MESSIAS – PT – S5 – 0294
ASSUMPTION
EV inevitability
RESULT
Each house will have at least one new electric device to plug-in, which alone represent a charge equivalent to a typical house in Portugal (3,45 kVA)
CHARACTERISTIC
Possible off-peak charge
OPPORTUNITY
Increase the efficiency of the entire electrical system, flatting the load diagram
Frankfurt (Germany), 6-9 June 2011
MESSIAS – PT – S5 – 0294
ADDING EV TO GENERATION DEMAND
EV charge in today’s off-peak hours (lowest price)
Results
New peak
Unsustainable off-peak hours incentive
New peak
Old peak
Winter load diagram
+20%
-40%
EV perfect distribution charge in night off-peak hours
Requirements
Comprehensive off-peak tariff schedule
Management charging systemsWinter load diagram
-40% -10%
Frankfurt (Germany), 6-9 June 2011
Summer load diagram
MESSIAS – PT – S5 – 0294
ADDING EV TO GENERATION DEMAND
Winter load diagram
EV charge
EV perfect distribution charge in night off-peak hours
Requirements
Comprehensive off-peak tariff schedule
Management charging systemsWinter load diagram
Competitive day light charging points
Frankfurt (Germany), 6-9 June 2011
Distribution Transformer
Delivery Point
EB EBEB
DTC DTC
EB
LAN
Local Control(sensors, control, …)
Local devices(metering, sensors,
actuators, …)
User interface
Local Interaction
Consumer/ Producer
Remote interaction
Central
SCADA/ Distribution Management
System
Metering and Energy Data Management
Data/Service Providing Stakeholders
Distribution Network Electrical Infrastructure
Technical Architecture of Reference
WAN
Services Oriented Architecture (SOA)
LAN
HAN
Internet
PLC, GPRS, …
PLC, GPRS, …
GPRS, ADSL, IP …
DTC – Distribution Transformer Controller
EB – Energy Box
WAN – Wide Area NetworkLAN – Local Area NetworkHAN – Home Area Network
ZigBee, …
MV/ LV
ADDING EV TO LV NETWORK
MESSIAS – PT – S5 – 0294
Frankfurt (Germany), 6-9 June 2011
MESSIAS – PT – S5 – 0294
ADDING EV TO A SUBURBAN RESIDENTIAL AREA NETWORK
EV charge in today’s off-peak hours (lowest price)
Results
New peak
Unsustainable off-peak hours incentive
New asset investment (lowering utilization factors)
New peak
Old peak
EV perfect distribution charge in night off-peak hours
Requirements
Comprehensive off-peak tariff schedule
Local management charging systems
Charge transfer (competitive day light charging points)
EV charge
Frankfurt (Germany), 6-9 June 2011
MESSIAS – PT – S5 – 0294
ADDING EV TO A SUBURBAN RESIDENTIAL AREA NETWORK
Highest risk in low consumption areas than in already
higher consumption areas
New peakOld peak
High consumption residential area with two EV by
customer
Winter load diagram
EV charge
Frankfurt (Germany), 6-9 June 2011
TODAY’S LV CUSTOMERS BEHAVIOUR
MESSIAS – PT – S5 – 0294
Customers’ adherence to tariff incentives
Finding
Adherence not higher than new customers
Poor incentive? Customer poor information?
Customer doesn’t have information to perceive benefits!
Customers consumption and their tariff
Finding
31% of LV customers would potentially benefit
1,8 M (31%)
Frankfurt (Germany), 6-9 June 2011
CONCLUSION
MESSIAS – PT – S5 – 0294
EV an opportunity to increase the electrical system efficiency requiring:
Comprehensive tariff schedule to enable load management all day long;
Competitive day light charging points to take advantage of middle of day off-peak
hours and postpone DSO investment;
Smart-grid
to empower customers to evaluate their consumption situation and perceive
tariff benefits;
to support management charging systems and services;
to support DSO activities enabling prompt mitigation actions.