Transcript スライド 0 - Central Board Of Irrigation And Power

CIGRE SC D2 Colloquium
November 2013
Mysore - KARNATAKA – INDIA
D2-01_12
Disaster resilient telecommunications systems
for smart grid in Japan
Atsushi Ohara
Shikoku Electric Power Co., Inc.
Japan
[email protected]
Kousuke Kimura
Tohoku Electric Power Co., Inc.
Japan
Ryouichi Ito
Fujitsu Ltd.
Japan
Noritaka Tamehisa
Cisco Systems G.K.
Japan
Change of disaster contingency planning
p1
Concept of Telecommunication system
<Before the disaster>
<After the disaster>
High reliable
High reliable
(Redundant)
(Redundant）
High early
restoration
3.11
Great East
Japan
Earthquake
High early
restoration
Support for
early recovery
from disaster
by ICT system
Experience
Use this
experience in
SMARTGRID
telecommunication
system
Location of Shikoku EPCO and Tohoku EPCO
p2
Tohoku EPCO
Configuration of TV Conference
System using Satellite
Communication Links
Shikoku EPCO
Epicenter of Great East
Japan Earthquake
(11 March 2011)
Disaster Countermeasures for
Private Telephone Network
Risk of earthquakes
in the Tonankai and Nankai area
(60%to70% probability of a magunitude
8 to 9 earthquake within the next 30 years)
Case of Shikoku EPCO：
Disaster Countermeasures for Private Telephone Network
p3
Offices
Power
Stations
Private Telephone Network
Grid Operating
Center
Substations
Cost Reduction
New System Enhanced Convenience
Disaster resilience
Overview of Old System
Branch office
Power station
Grid control center
• 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
Public Switched Telephone Network
 60 PBX units
 Terminals:
p4
PBX
Other offices
Trunk line
CS
PHS
Analog
phone
Digital
phone
Sales offices
Substations
Overview of New System
Branch office
Power station
Grid control center
 IP terminals:
- PSTN-GW
- IP-RU
- IP-CS
- IP-phone
*IP-CS can be deployed
at the place where can
connect to IP-network.
Public Switched Telephone Network
 22 IP-based PBX units
 Terminals:
- Analog phone
- Digital phone
- PHS
p5
Other offices
IP-PBX
Trunk line
CS
PHS
Analog
phone
Digital
phone
IP-Network
Sales offices
Substations
PSTN-GW
IP-RU
IP-CS
IP-CS IPphone
Benefits of Deployment of New System
Old System
Head
p6
New System(IP-based PBX)
IP-PBX
PBX
Configration
Office
Branch Office
PBX
IP-PBX
PBX
60
units
Power Station
Sales Office
PBX
PBX
PBX
IP-PBX
22
unit
s
IP-NW
PBX
IP-CS
IP-Phone
IP-CS
IP-RU
Sub Stations
Analog
phone
Cost
Comparison
reduction
Enhanced
convenience
Disaster
resilience
Analog
phone
IP-CS Analog
phone
IP-CS Analog
phone
60 PBX units
22 PBX units
The PHS coverage
The PHS coverage area is
area was limited
expanded dramatically
No backup systems
wide-area backup
system
Steps to achieve Disaster Resilience
p7
(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
BUP-Ehime
BUP-Kagawa
BUP-Kochi
BUP-Tokushima
MST-Kagawa
MST-Ehime
MST-Tokushima
MST-Kochi
MST
Master Station Data
BUP
Backup Station Data
250 km
Steps to achieve Disaster Resilience
(2) Improved Reliability of the Existing IP Network
The microwave radio network that provides greater disaster
resilience than optical fiber lines is employed as the alternative
route. In a East Japan great earthquake, many of micro wave radio
network survived.
microwave radio network
Optical fiber lines
p8
Case of Tohoku EPCO：
Configuration of TV Conference System using Satellite Communication Links
Purpose
The backup line is composed.
A temporary line is composed in the disaster area.
System Configuration
p9
Use of the VSAT System during the Great East Japan
Earthquake
When East Japan great earthquake occurs（March 11, 2011）
The wide range is blacked out.
The telecommunication line of coastal flows out by the tsunami.
For recovery
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.
p10
Use of the VSAT System during the Great East Japan
Earthquake
p11
A temporary line was constructed with the VSAT system.
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.
It contributes to the early recovery of the disaster.
Use of the TV Conference System during the Great East Japan
p12
Earthquake
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)
When Great East Japan Earthquake occurs（March 11, 2011）
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.
Use of the TV Conference System during the Great East Japan
p13
Earthquake
-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
p14
Earthquake
TV Conference held during the Great East Japan Earthquake
(Emergency Anti-disaster Headquarters in the Head Office)
It contributes to the early recovery of the disaster.
Linkage of the VSAT System and TV Conference System
The new system are composed
by VSAT system and TV conference system.
VSAT system
Satellite
communications
Head office
Data Center
Fixed
VSAT station
Disaster area
Transportable
VSAT station
Fixed
VSAT station
phone
TV conference system
Bandwidth
32kbps
Branch office, etc.
ＭＣＵ
Stationary
TV conference
terminal
Stationary
TV conference
terminal
ＭＣＵ
phone
192kbps
ＭＣＵ
Stationary
TV conference
terminal
Portable
TV conference
terminal
phone
phone
Internal communication network
The TV conference can be promptly held in any
locations at the emergency disaster.
p15
Expected Benefits
p16
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.
etc.
Conclusion
p17
We strongly felt the possibility of ICT for considering disasterresistant 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.
p18
Thank you !
Next:
Answers to the Special Report Questions
Special 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.
p19
Special Report Q1-8
p20
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.
p21
Thank you for your attention!