Transcript Optimizing the EV electrical demand impact

Frankfurt (Germany), 6-9 June 2011
Optimizing the EV electrical demand
impact
CIRED, Frankfurt, 9 June 2011
MESSIAS – PT – S5 – 0294
Frankfurt (Germany), 6-9 June 2011
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
MESSIAS – PT – S5 – 0294
Frankfurt (Germany), 6-9 June 2011
ADDING EV TO GENERATION DEMAND
EV charge in today’s off-peak hours (lowest price)
New peak
+20%
Old peak
Results
-40%
New peak
Winter load diagram
Unsustainable off-peak hours incentive
EV perfect distribution charge in night off-peak hours
-40%
-10%
Requirements
Comprehensive off-peak tariff schedule
Winter load diagram
MESSIAS – PT – S5 – 0294
Management charging systems
Frankfurt (Germany), 6-9 June 2011
ADDING EV TO GENERATION DEMAND

EV perfect distribution charge in night off-peak hours
Requirements
Comprehensive off-peak tariff schedule
Management charging systems
Winter load diagram
Competitive day light charging points
EV charge
Summer load diagram
MESSIAS – PT – S5 – 0294
Winter load diagram
Frankfurt (Germany), 6-9 June 2011
ADDING EV TO LV NETWORK
Technical Architecture of Reference
Services Oriented Architecture (SOA)
Central
SCADA/
Distribution
Management
System
Distribution Network
Electrical Infrastructure
Metering and
Energy Data
Management
Data/Service
Providing
Stakeholders
WAN
Internet
MV/LV
GPRS,
ADSL, IP …
Distribution Transformer
Local Control
(sensors, control, …)
DTC
DTC
PLC, GPRS, …
LAN
DTC – Distribution Transformer
Controller
EB
– Energy Box
LAN
Delivery Point
Local devices
(metering, sensors,
actuators, …)
HAN
EB
EB
EB
EB
PLC,
GPRS,
…
ZigBee, …
User interface
Local
Interaction
Consumer/Producer
MESSIAS – PT – S5 – 0294
Remote
interaction
WAN – Wide Area Network
LAN – Local Area Network
HAN – Home Area Network
Frankfurt (Germany), 6-9 June 2011
ADDING EV TO A SUBURBAN RESIDENTIAL AREA NETWORK
New peak
EV charge in today’s off-peak hours (lowest price)
Old peak
Results
New peak
Unsustainable off-peak hours incentive
New asset investment (lowering utilization factors)
EV perfect distribution charge in night off-peak hours
Requirements
EV charge
Comprehensive off-peak tariff schedule
Local management charging systems
Charge transfer (competitive day light charging points)
MESSIAS – PT – S5 – 0294
Frankfurt (Germany), 6-9 June 2011
ADDING EV TO A SUBURBAN RESIDENTIAL AREA NETWORK
New peak
Old peak
Highest risk in low consumption areas than in already
higher consumption areas
High consumption residential area with two EV by
customer
EV charge
Winter load diagram
MESSIAS – PT – S5 – 0294
Frankfurt (Germany), 6-9 June 2011
TODAY’S LV CUSTOMERS BEHAVIOUR
Customers’ adherence to tariff incentives
Finding
Adherence not higher than new customers
Poor incentive? Customer poor information?
Customers consumption and their tariff
1,8 M (31%)
Finding
31% of LV customers would potentially benefit
Customer doesn’t have information to perceive benefits!
MESSIAS – PT – S5 – 0294
Frankfurt (Germany), 6-9 June 2011
CONCLUSION
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.
MESSIAS – PT – S5 – 0294