Presented By: David J. Musto, Principal Thermo Systems L.L.C. East Windsor, NJ USA

Transcription

1 Designing Secure, Redundant Fiber Optic Networks for District Energy Systems: A case study of the Lulu Island network design in Manama, Kingdom of Bahrain. Presented By: David J. Musto, Principal Thermo Systems L.L.C. East Windsor, NJ USA

2 Introduction Communications connections for district cooling energy transfer stations (ETS s) have evolved significantly in recent years. Deploying dedicated fiber optic networks is becoming increasingly more commercially viable. Critical design elements in the deployment of these networks are security, redundancy, and installation phasing. The purpose of this paper is to overview the choices in ETS communications connections, and focus on the design elements of a dedicated fiber backbone. The design of the ETS fiber backbone for the Lulu Island district cooling project in Manama, Kingdom of Bahrain, will be used as a case study.

3 Lulu Island Overview Land reclamation project on the North Shore of Manama, in the Kingdom of Bahrain. Area of approximately 563,000 square meters (140 Acres). 53 Energy Transfer Stations (ETS) will be deployed over a build out period of 5 to 10 years

4 Lulu Island Overview

5 Lulu Island Overview

6 Lulu Island Overview

7 Design Considerations Network security Redundancy and Reliability Installation Phasing First Cost

8 Communications Options Considered Telephone dial up Low first cost Requires reliance on customer s telephone backbone as well as city telephone network Limited connectivity speeds (though adequate for small systems) Connection is temporary Telephone leased line Low first cost Requires monthly connection fee Requires reliance on customer s telephone backbone as well as city telephone network Limited connectivity speeds (though adequate for small systems) Connection is constant

9 Communications Options Considered Radio Telemetry Requires initial hardware investment Customers may not like antennae locations Requires some ongoing maintenance Connection is constant Connectivity speed is excellent Dedicated system does not rely on customer or local authorities infrastructure May require local government approval Virtual Private Network (VPN) over the world wide web Low first cost Requires reliance on customer s IT infrastructure Requires reliance on local Internet Service Provider (ISP) Connection is constant Connectivity speed is good

10 Communications Options Considered Dedicated Fiber Optic Network Capital intensive first cost Dedicated network does not rely on customer or local utility service Constant high speed connection Limited ongoing maintenance Secure and reliable

11 Design Consideration Network Security Physical security Locking local PLC panels Panel tamper switches Alarms at central command Secure network switches

12 Benefits of Secure Network Switches Configurable Ports Ability to configure allowable IP address connections Ability to configure allowable MAC ID address connections Monitor connections, status, system integrity through plant SCADA system Utilize OPC server in SCADA system to develop graphics and alarms to monitor network integrity Protect against data or application manipulation

13 Design Considerations Redundancy and Installation Phasing Bi-Directional fiber rings allow for redundancy and installation phasing

14 Design Considerations Redundancy and Installation Phasing

15 Design Considerations Redundancy and Installation Phasing

16 Design Considerations Redundancy and Installation Phasing

17 Design Considerations Redundancy and Installation Phasing

18 Design Considerations First Cost Fiber optic network cost considerations Must be installed with network CHW piping Cost prohibitive to retrofit to existing piping networks Incremental cost of underground raceway is not significant during new construction Fiber optic cable is a commodity item Connections and terminations can be costed to individual ETS connections and are not first cost considerations

19 Conclusions Dedicated fiber optic backbone was the best solution to meet project needs of Network Security, Redundancy, Installation Phasing, and First Cost Network security can be enhanced using secure network switches Redundancy and installation phasing can be achieved with a ring topology Fiber networks are more cost feasible in new installations First cost can be decreased by deferring ETS connections until needed

20 Acknowledgements ANSI TIA EIA Standard 568-B TIA Telecommunications Industry Association EIA Electronic Industries Association Hirschmann Automation and Control GmbH Corning Cable Systems LLC Barry Hyde, President, Universal Fiber Optics Gregory Smith, Principal, Thermo Systems L.L.C. Ryan Bedford, Senior Engineer for Strategic Projects, Thermo Systems L.L.C.