1. by Minho Shin, Myongji University
V2G project in 2013 Summer
by Minho Shin, Myongji University

2. Outline
Smart Grid
Project
IEC/ISO 15118
Dev. plan

3. Power Grid

4. Power Grid
Power Grid
One-way power flow

5. Power Grid One-way power flow Use or discard Power Grid 100 Energy
Waste
Power Grid
One-way power flow
Use or discard

6. Power Grid One-way power flow Use or discard Over-provision Power Grid
Energy
Waste
Power Grid
One-way power flow
Use or discard
Over-provision

7. Load forecasting model
Over-provision
Load forecasting model
Peak load
Supply
= Peak load * 1.2
Wasted Energy

8. Over-provision Expensive Inefficient Limited Emergency Supply
Rescue in 10 min
Unexpected peak demand
Supply
Detection
Turn on peaker plants
Over-provision
Expensive
Inefficient
Limited

9. Solution: match demand to supply

10. Solution: match demand to supply

11. Effect of Demand Shifting
Benefits
Save 67 billion Euros in Europe
Save 130 billion dollars in US
Reduce CO2 emission
Massive investments on smart grid
11 billion investments by Obama
US DoE target: 20% reduction of peak demand

12. How? Smart metering Realize real-time demand response
Advanced Metering Infrastructure (AMI)
Realize real-time demand response
lower peak load
Smart
meter
Demand information
EMS
Demand control message

13. Go Green Renewable Energy Sources By 2030, US target: 20% But… We need
Wind turbine
Solar panel
By 2030, US target: 20%
But…
Renewable energy is intermittent
Highly distributed
We need
Intelligent power management strategy
Smart control system

14. Smart Grid = Power Grid + AMI + Renewables + …

15. Why Electric Vehicle? Electric Vehicle Benefit
Car run by electricity (or with gasoline)
Benefit
Reduction of CO2 emission
15% of CO2 by transportation
Driver’s Cost
Reduce dependence on oil

16. Smart Grid = Grid + AMI + Renewable + EV
System
Operator
HAN

17. EV Charing Problem
Can we feed EVs?
Increase peak demand
EV-charging

18. EV Charging Problem That’s it?? Can we feed EVs? Solution
Increase peak demand
Solution
Smart Charging Schedule
Time-varying price
That’s it??
EV-charging

19. Active role of EV in Smart Grid
Power stored in battery
Available (parked) 90% of time
Aggregated, highly reliable power resource
Use the stored power for Grid
help balance power production/consumption
Real-time regulation service
Make money
Grid
charge
discharge

20. Smart Grid and Computer Science
Smart Grid is a cyber-physical system
Sense
Process
&
Decision
Actuate

21. Smart Grid & Computer Science
CS problems
Real-time data processing
Communication & Networking
Fault-tolerant system architecture
Interoperability
Security & Privacy
Programming model
Visualization
etc…

22. Interoperability Standardization effort for interoperability
SG = interconnection of different power generators, distribution networks, and consumers
Connect them regardless of physical medium, manufacturer, device types
Likely that multiple comm. technologies coexist
Devices: Bluetooth, UWB
Home/local: Zigbee, WiFi
Meter-Utility: 3G/4G
Standardization effort for interoperability

23. Questions?

24. V2G Interoperability Project
자동차와 충전기 간의 상호운용성 테스트 시스템 개발
자동차와 충전기 간의 통신 구현 (15118)
자동차/충전기의 표준 적합성 테스트 SW 개발
Period: 2012~2014
Participants: 지식경제부, 한국산업기술시험원(KTL), 명지대, PNE
장혁수, 김인택, 신민호

25. 충전기 DSO 전기차 EVCC E-mobility SECC Infrastructure Operator EVSE EVCC
15118 Server
Application
Network
Data Link
Physical
Server
IEC 61850
Meta Model
15118 Client
Application
Network
Data Link
Physical
Client
IEC 61850
Meta Model
Application
Network
Data Link
Physical
IEC/TR
IEC
61850
IEC/ISO
15118
EV & EVCC
EVSE & SECC (Application Layer Gateway)
EIOp
Logic IEC Comm.
Standardized in ISO/IEC
EVCC
EV Communication Controller
Logic ISO/IEC Comm.
SECC
Standardized in ISO/IEC
Supply Equipment Comm. Controller
ISO/OSI Layer Information Flow
Scope of IEC/TR
EVSE
EV Supply Equipment
Power Line(Feeder)
NOT in scope of IEC/TR
DSO
Distribution System Operator
Point of Common Coupling

26. IEC/ISO 15118 Protocol Stack

27. 15118: Overall Procedure Connect Data Link: PLC
Set up IP address (DHCP, SSAS): IPv6 (IPv4)
Find Charger: SDP over UDP
TCP connection
TLS channel establishment
V2G setup
Handshake, session setup, service discovery
Charging
Payment, charge parameter, line lock, power delivery
(Loop) metering status, metering receipt

28. Development Technologies
UDP (SDP), TCP (others) over IPv6(4)
Socket programming
TLS security: GNUTLS library
XML/EXI programming: OpenV2G library
XML security: GNUTLS library
Multi-threading
pthread (linux), Win32 API(Win)
Shared memory for comm. with 61850
Win32 API

29. MJU Reference System Front-end Graphical User Interface EVCC SECC SDP
TLS
TLS
Handshake
Handshake
TLS
Setup
Setup
Charging
Charging
EXI/XML Handling Library (OpenV2G)
Security Handling Library (GNUTLS)

30. Development Status (Linux)
OSI 7 Layers
Protocol Suites
Security
Application
SDP
AC-Charging
DC-Charging
XML Security
TLS (no multithread)
Presentation
XML
EXI
Session
V2GTP
Transport
TCP
UDP
Network
IPv6: DHCP, SLAAC, DAS
IPv4: DHCP
Data Link & Physical
Basic
Signaling
PLC
(Power Line Communication)

31. TODO (TLS) TLS for multi-thread (IPv6) IPv6 socket programming
(EXI) XML/EXI library
(XMLSec) XML security
(Win) Windows porting
(GUI) Front-end GUI
(Shmem) Shared memory comm. with 61850
(Conf) verification
(Tester) Conformance Test Program

32. Workflow TLS-unix Win GUI-ruby EXI Shmem TLS-win IPv6 GUI-MFC XMLSec
Reference
System

33. 6/24~
7/1~
7/8~
7/15~
7/22~
7/29~
8/5~
8/12~
8/19~
8/26~
Events
TLS
Win
GUI
EXI
Shmem
Conf
Tester
no cho
unix
Win
IPv6
GUI-ruby
GUI-MFC
Win
Toy
Toy
review
code analysis

34. Person-Skill matrix C Ruby Linux prog. Widnows prog. Network
Socket prog
Multi
thread
MFC
Shared mem.
김상선 E+ H B E G
H/E
전거창
E(j)
조성우
E/E
허만재
H/B
G (very good), E (has experience), B (basic knowledge), H (have heard of it), W (what?)

35. Task Assignment TLS IPv6 EXI XMLSec GUI Win Shmem Conf Tester 김상선 C L
전거창 P
조성우
허만재
L (Leading role) P (participate) C (consulting role) B (backup role) M (monitoring)

36. Team work Dropbox: V2G-win Homepage (허) Meeting: 매주
GoToMeeting
Meeting note (허)
Documentation & reporting
Use progress wiki (everyday, must)
Commentation

37. Development Environment
Windows 7
Visual Studio 2010 – C/MFC