Abstract

With the proliferation of Smart Grid technologies and IP-based Process Control and Condition Monitoring Systems for power system operations, bulk electric system (BES) is now more dependent on real-time information exchange between control centre and remote end Intelligent Electronic Devices (IED's) for monitoring and optimizing the transmission and distribution of electricity. Because of this, there are growing concerns on cyber security issues that brought by these technologies. It was noted that attention has been drawn to the security framework for engineering applications/systems and their own local area network (LAN), but the security and reliability of the communication channels for supporting these applications/system have been taken for granted. This paper summarizes how The Hongkong Electric Co., Ltd. (the Company) has designed and built an IP-based Data Communication Network (DCN) for engineering applications with due consideration on the system security and reliability.

Highlights

  • With the increasing deployment of IP-based process control and condition monitoring systems and IEDs, power utilities have brought unprecedented on-line system control & monitoring features and functions into their power system operations

  • This paper summarizes how The Hongkong Electric Co., Ltd. has designed and built an IP-based Data Communication Network (DCN) for engineering applications with due consideration on the system security and reliability

  • To meet the stringent requirements on the cyber security of the DCN, the Company has conducted both internal and external assessment on cyber security and vulnerability with reference to the North American Electric Reliability Corporation (NERC) Critical Infrastructure Protection (CIP) standards to ensure that the DCN is safe and reliable in the context of cyber security

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Summary

Introduction

With the increasing deployment of IP-based process control and condition monitoring systems and IEDs, power utilities have brought unprecedented on-line system control & monitoring features and functions into their power system operations. In order to continue providing a reliable and secure communication platform to support the world-class standard electricity supply services together with enriched features, the Company designed and built a self-owned carrier-grade IP-based DCN for supporting the above newly introduced IP-based process control and condition monitoring systems for power system operations. Critical systems like Supervisory Control and Data Acquisition (SCADA) require very secure and reliable communication channels since any vulnerabilities in the security of the communication channels could indirectly jeopardize the whole power system. To meet the stringent requirements on the cyber security of the DCN, the Company has conducted both internal and external assessment on cyber security and vulnerability with reference to the North American Electric Reliability Corporation (NERC) Critical Infrastructure Protection (CIP) standards to ensure that the DCN is safe and reliable in the context of cyber security

Key cyber security pillars for DCN
Cyber security concerns in design
Technology
Network topology
Redundancy
Results
Cyber security framework
Security measures in DCN
Security measures automation
Future enhancement
Conclusion
Notes on contributors

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