d2-01_12 disaster resilient telecommunications systems for smart grid in japan atsushi ohara shikoku...
TRANSCRIPT
D2-01_12D2-01_12
Disaster resilient telecommunications systems Disaster resilient telecommunications systems
for smart grid in Japanfor smart grid in Japan
Atsushi Ohara Shikoku Electric Power Co.,
Inc.
Japan
Ryouichi
Ito Fujitsu Ltd.
Japan
CIGRE SC D2 ColloquiumCIGRE SC D2 ColloquiumNovember 2013November 2013
Mysore - KARNATAKA – INDIAMysore - KARNATAKA – INDIA
Kousuke Kimura
Tohoku Electric Power Co.,
Inc.
Japan
Noritaka Tamehisa
Cisco Systems G.K.
Japan
p2Change of disaster contingency planning
High reliable (Redundant)
3.11
Great East
Japan
EarthquakeHigh early
restoration
Concept of Telecommunication system
Experience
High reliable (Redundant ）
High early
restoration
Support for
early recovery
from disaster
by ICT system
<Before the disaster> <After the disaster>
Use this
experience in
SMARTGRID telecommunication
system
p3Location of Shikoku EPCO and Tohoku EPCO
Shikoku EPCO Disaster Countermeasures for
Private Telephone Network
Tohoku EPCO Configuration of TV Conference
System using Satellite
Communication Links
Epicenter of Great East
Japan Earthquake
(11 March 2011)
Risk of earthquakes
in the Tonankai and Nankai area(60%to70% probability of a magunitude
8 to 9 earthquake within the next 30 years)
p4
Private Telephone Network
Case of Shikoku EPCO ：Disaster Countermeasures for Private Telephone Network
Disaster resilience
Cost ReductionEnhanced Convenience
Power
Stations
Offices
Grid Operating
Center
Substations
New System
p5Overview of Old System
Pu
blic
Sw
itch
ed T
ele
pho
ne N
etw
ork PBX
CS
Analog phone
Digital phone
PHS
Branch officePower stationGrid control center Other offices
Trunk line
Sales offices Substations
60 PBX units
Terminals:
• Analog phone
• Digital phone
• PHS
*CS is at the same
location as PBXes.
PBX:Private Branch eXchage
PHS:Personal Handy-phone
System
CS:Cell station
p6Overview of New System
Pu
blic
Sw
itch
ed T
ele
pho
ne N
etw
ork IP-PBX
CS
Analog phone
Digital phone
PHS
Branch officePower stationGrid control center Other offices
Trunk line
Sales offices Substations
22 IP-based PBX units
Terminals: - Analog phone
- Digital phone
- PHS
IP terminals: -
PSTN-GW -
IP-RU -
IP-CS -
IP-phone
*IP-CS can be deployed
at the place where can
connect to IP-network.
IP-Network
PSTN-GW
IP-RU
IP-CS IP-phone
IP-CS
Co
ntr
ol
Bac
k up
p7Benefits of Deployment of New System
Old System New System(IP-based PBX)
Co
nfi
gra
tion
Branch Office
Power Station
Sales Office
Sub Stations
Head
Office
Co
mp
aris
on
Enhanced
convenience
The PHS coverage area is
expanded dramatically
The PHS coverage
area was limited
Cost
reduction60 PBX units 22 PBX units
No backup systemswide-area backup
system
Disaster
resilience
PBX
PBXPBX
PBX PBX PBX PBX
IP-PBX
IP-CS
IP-PBX IP-PBX
IP-CS IP-RUIP-Phone
IP-NW
60units
22units
IP-CS IP-CSAnalogphone
Analogphone
Analogphone
Analogphone
p8Steps to achieve Disaster Resilience
250 km250 km
MSTMST
BUPBUP
Master Station Data
Backup Station Data
MST-TokushimaMST-Tokushima
BUP-Kochi
MST-Kagawa
BUP-Ehime
BUP-Kochi
MST-Kagawa
BUP-Ehime
MST-KochiMST-Kochi
MST-Ehime
BUP-Kagawa
BUP-Tokushima
MST-Ehime
BUP-Kagawa
BUP-Tokushima
(1)Wide-area Backup System
IP terminals select other PBX automatically to ensure continuity of call
control in the event of failure of normal connections
Deployment of Backup stations
p9
(2) Improved Reliability of the Existing IP Network
The microwave radio network that provides greater disaster resilie
nce than optical fiber lines is employed as the alternative route. In
a East Japan great earthquake, many of micro wave radio network
survived.
Steps to achieve Disaster Resilience
Optical fiber lines
microwave radio network
p10
The backup line is composed.
A temporary line is composed in the disaster area.
Case of Tohoku EPCO ：Configuration of TV Conference System using Satellite Communication Links
Purpose
System Configuration
p11
For recovery
Use of the VSAT System during the Great East Japan Earthquake
The wide range is blacked out.
The telecommunication line of coastal flows out by the tsunami.
When East Japan great earthquake occurs （ March 11, 201
1 ）
The telephone and the fax lines are necessary in the office.
The remote monitoring and control lines are necessary in the power
plant and substation.
p12Use of the VSAT System during the Great East Japan Earthquake
In 3 days : The telephone and the fax lines were restored.
In 2 weeks : The remote monitoring and control lines were restored.
Other power companies cooperated in the preparation of the necessary
transportable VSAT stations.
A temporary line was constructed with the VSAT system.
It contributes to the early recovery of the disaster.
p13
The TV conference system was used for the disaster recovery at the East Japan great earthquake.
System configuration
- 183 TV conference terminals in 113 offices.
- Stationary terminal and portable terminal.
- MCU(Multi Control Unit)
Use of the TV Conference System during the Great East Japan Earthquake
With the exception of offices the communication lines of
which had been destroyed by the tsunami, the TV
conference system were available for use in offices.
When Great East Japan Earthquake occurs （ March 11, 201
1 ）
p14
-It was used to aid disaster recovery actions from the very day the Great East Japan Earthquake struck.
-The TV conference system was used frequently for
information sharing.
<Usage Number, Time>
March 11,2011~ March 31,2011(For 21 days)
Number of total conference : 360 times.
Total conference times : for 434 hours.
Use of the TV Conference System during the Great East Japan Earthquake
p15
TV Conference held during the Great East Japan Earthquake
(Emergency Anti-disaster Headquarters in the Head Office)
Use of the TV Conference System during the Great East Japan Earthquake
It contributes to the early recovery of the disaster.
p16
The new system are composed
by VSAT system and TV conference system.
Disaster area
Portable TV conference
terminal
Head office Data Center
Internal communication network
Transportable VSAT station
StationaryTV conference
terminal
ＭＣＵＭＣＵＭＣＵ
StationaryTV conference
terminal
StationaryTV conference
terminal
Satellitecommunications
Branch office, etc.
TV conference system
VSAT system
phone
phonephone phone
Fixed VSAT station
Fixed VSAT station
Linkage of the VSAT System and TV Conference System
The TV conference can be promptly held in any
locations at the emergency disaster.
Bandwidth
32kbps
192kbps
p17
The ability to view images directly from disaster sites
at the emergency anti-disaster headquarters provides
more accurate information.
Technical support can be provided for affected
facilities and work instructions can be transmitted
directly to disaster sites.
Expected Benefits
etc.
p18Conclusion
We strongly felt the possibility of ICT for considering disaster-
resistant and supporting early recovery, from the experience of
disaster. We learned many things from these use cases.
- How to ensure the communication system (telephone, video
conference) is important to assist recovery from disaster.
- VSAT and micro-ware wireless network are highly reliable and
we
can use it in case of wide area disaster.
- In case of disaster, we can do early action if we have
communication system which can use in emergency.
We would like to use these good experience for expansion of electric
power telecommunication system which aim at SMARTGRID
deployment.
p19
Thank you !
Next:Answers to the Special Report Questions
p20Special Report Q1-7
Q1-7. The authors are invited to provide details of new IP based system and
its comparison with old systems.
<Answer>
We explained the answer of this question at case of Shikoku EPCO
”Disaster Countermeasures for Private Telephone Network”
at slide 4,5,6.
p21Special Report Q1-8
Q1-8. Does Shikoku and Tohoku Electric Power Companies have standalone
disaster resilience and support with dedicated telecommunication systems?
How are they integrated to the enterprise bus of the other utility systems?
<Answer>
VSAT system is the one which has capability of disaster-resistant
independently, and we can compose it if fixed VSAT station is connected to
internal network in advance.
Shikoku Electric Power Company has VSAT system and fixed VSAT station is
connected to internal telephone network. We can connect to internal
telephone network using transportable VSAT station from the place which
encounter the disaster and can't use existing telecommunication system.
Tohoku Electric Power Company, as describing in this paper, in addition to
FAX system and remote monitoring and control line, they can connect to the
TV conferencing system.
p22
Thank you for your attention!