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PMU traffic shaping in IP-based wide area communication
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.
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2010 (English)In: 2010 5th International Conference on Critical Infrastructure, CRIS 2010 - Proceedings, IEEE conference proceedings, 2010, 1-6 p.Conference paper (Refereed)
Abstract [en]

Phasor based Wide Area Monitoring and Control (WAMC) Systems are becoming a reality with increased research, development and deployments. Many potential control applications based on these systems are being proposed and researched. Such applications are either local applications using data from one or a few Phasor Measurement Units (PMUs) or centralized utilizing data from several PMUs. An aspect of these systems, which is less well researched, is the WAMC system dependence on high performance communication. This paper presents results of research on the use of Internet Protocol (IP) networks for both PMU and Remote Terminal Unit (RTU)/Intelligent Electronic Devices (IED) data for monitoring purposes. The paper examines performance aspects of the IP network Infrastructures when utilized by both: continuous PMU data streams and critical IED/RTU data. A set of simulation models characterizing a network of a Nordic Transmission System Operator were built to perform the analysis. The paper considers Quality of Service (QoS) strategies and the resulting delays and data loss that would be experienced.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2010. 1-6 p.
Keyword [en]
Communication simulation, PMU communication, PMU communication delays, Wide area monitoring and control, Data loss, Data stream, High performance communication, Intelligent electronic device, Internet protocol networks, IP networks, Nordic transmission system, Performance aspects, Phasor measurement unit, Potential control, Remote terminal units, Simulation model, Traffic-shaping, WAMC systems, Wide area monitoring, Wide-area communication, Communication, Internet protocols, Monitoring, Public works, Quality control, Quality of service, Research, Sounding apparatus, Units of measurement, Computer simulation
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-49933DOI: 10.1109/CRIS.2010.5617564ScopusID: 2-s2.0-78649938101ISBN: 9781424480814 (ISBN)OAI: diva2:460685
2010 5th International Conference on Critical Infrastructure, CRIS 2010; Beijing; 20 September 2010 through 22 September 2010

QC 20111201

Available from: 2012-11-14 Created: 2011-11-30 Last updated: 2013-02-18Bibliographically approved
In thesis
1. Analyzing Non-Functional Capabilities of ICT Infrastructures Supporting Power System Wide Area Monitoring and Control
Open this publication in new window or tab >>Analyzing Non-Functional Capabilities of ICT Infrastructures Supporting Power System Wide Area Monitoring and Control
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The strain on modern electrical power systems has led to an ever-increasing utilization of new information and communication technologies (ICT) to improve their efficiency and reliability. Wide area monitoring and control (WAMC) systems offer many opportunities to improve the real-time situational awareness in the power system. These systems are essen-tially SCADA systems but with continuous streaming of measurement data from the power system. The quality of WAMC systems and the applications running on top of them are heavily, but not exclusively, dependent on the underlying non-functional quality of the ICT systems.

From an ICT perspective, the real-time nature of WAMC systems makes them susceptible to variations in the quality of the supporting ICT systems. The non-functional qualities studied as part of this research are performance, interoperability and cyber security. To analyze the performance of WAMC ICT systems, WAMC applications were identified, and their requirements were elicited. Furthermore, simulation models capturing typical utility communication infrastructure architectures were implemented. The simulation studies were carried out to identify and characterize the latency in these systems and its impact on data quality in terms of the data loss.

While performance is a major and desirable quality, other non-functional qualities such as interoperability and cyber security have a significant impact on the usefulness of the sys-tem. To analyze these non-functional qualities, an enterprise architecture (EA) based framework for the modeling and analysis of interoperability and cyber security, specialized for WAMC systems, is proposed. The framework also captures the impact of cyber security on the interoperability of WAMC systems. Finally, a prototype WAMC system was imple-mented to allow the validation of the proposed EA based framework. The prototype is based on existing and adopted open-source frameworks and libraries.

The research described in this thesis makes several contributions. The work is a systematic approach for the analysis of the non-functional quality of WAMC ICT systems as a basis for establishing the suitability of ICT system architectures to support WAMC applications. This analysis is accomplished by first analyzing the impact of communication architectures for WAMC systems on the latency. Second, the impact of these latencies on the data quali-ty, specifically data currency (end to end delay of the phasor measurements) and data in-completeness (i.e., the percentage of phasor measurements lost in the communication), is analyzed. The research also provides a framework for interoperability and cyber security analysis based on a probabilistic Monte Carlo enterprise architecture method. Additionally, the framework captures the possible impact of cyber security on the interoperability of WAMC data flows. A final result of the research is a test bed where WAMC applications can be deployed and ICT architectures tested in a controlled but realistic environment.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2013. ix, 45 p.
Trita-EE, ISSN 1653-5146 ; 2013:006
Power System Communication, Wide Area Monitoring and Control systems, Phasor Measurements Units, Power System Communication, SCADA systems.
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
urn:nbn:se:kth:diva-118443 (URN)978-91-7501-636-8 (ISBN)
Public defence
2013-03-21, Sal F3, Lindstedtsvägen 26, KTH, Stockholm, 10:00 (English)

QC 20130218

Available from: 2013-02-18 Created: 2013-02-18 Last updated: 2013-02-18Bibliographically approved

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