1. D2-01_12 Disaster resilient telecommunications systems for smart grid in Japan Atsushi Ohara Shikoku Electric Power Co., Inc. Japan oohara14746@yonden.co.jp Ryouichi Ito Fujitsu Ltd. Japan CIGRE SC D2 Colloquium November 2013 Mysore - KARNATAKA – INDIA Kousuke Kimura Tohoku Electric Power Co., Inc. Japan Noritaka Tamehisa Cisco Systems G.K. Japan

2. p1 Change of disaster contingency planning High reliable (Redundant) 3.11 Great East Japan Earthquake High early restoration Concept of Telecommunication system Experience High reliable (Redundant ） High early restoration Support for early recovery from disaster by ICT system Use this experience in SMARTGRID telecommunication system

3. p2 Location 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)

4. p3 Private Telephone Network Case of Shikoku EPCO ： Disaster Countermeasures for Private Telephone Network Disaster resilience Cost Reduction Enhanced Convenience Power Stations Offices Grid Operating Center Substations New System

5. p4 Overview of Old System Public Switched Telephone Network PBX CS Analog phone Digital phone PHS Branch office Power station Grid 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

6. p5 Overview of New System Public Switched Telephone Network IP-PBX CS Analog phone Digital phone PHS Branch office Power station Grid 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 Control Back up

7. p6 Benefits of Deployment of New System

8. p7 Steps to achieve Disaster Resilience (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

9. p8 (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. Steps to achieve Disaster Resilience Optical fiber lines microwave radio network

10. p9 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

11. p10 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, 2011 ） 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.

12. p11 Use 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.

13. p12 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, 2011 ）

14. p13 -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. 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

15. p14 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.

16. p15 The new system are composed by VSAT system and TV conference system. 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

17. 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. Expected Benefits etc.

18. p17 Conclusion 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.

19. p18 Thank you ! Next: Answers to the Special Report Questions

20. p19 Special Report Q1-7 Q1-7. The authors are invited to provide details of new IP based system and its comparison with old systems. We explained the answer of this question at case of Shikoku EPCO ”Disaster Countermeasures for Private Telephone Network” at slide 4,5,6.

21. p20 Special 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? 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.

22. p21 Thank you for your attention!