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Availability of a SCADA/OMS/DMS system - A case study
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.ORCID iD: 0000-0003-2017-7914
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.
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2010 (English)In: IEEE PES Innovative Smart Grid Technologies Conference Europe, ISGT Europe, Gothenburg, 2010Conference paper, Published paper (Refereed)
Abstract [en]

With the advent of the smart grid, new challenges arise for electricity distribution. In particular, reliable power distribution will become evermore dependent upon information and communication technology (ICT). With this increasing dependency comes a need for a deeper understanding of the availability of those ICT components that maintain the power grid. This paper presents a study in which all components of a supervisory control and data acquisition (SCADA), Outage Management (OMS) and Distribution Management (DMS) system at a power utility are analyzed from an availability perspective, identifying the parts of the system that contribute the most to overall system downtime. Furthermore, the case study involves a downsizing regarding the IT system architecture redundancy. This downsizing makes it very interesting to investigate how hardware redundancy relates to the overall SCADA/OMS/DMS system availability. Such knowledge is required to assess the rationality of the architectural restructuring decision, as well as for more general rational decision making when it comes to the ICT components of the power distribution grid. It is concluded that even in the new architecture, the remaining hardware redundancy level is enough. Instead, it is found that most of the downtime of the SCADA/OMS/DMS system is caused by failing software, causing all the redundant hardware to become unavailable at the same time. Since the software is a third party piece from the supplier of the system, one important source of downtime can be seen as emanating from the requirements and procurement process of the company.

Place, publisher, year, edition, pages
Gothenburg, 2010.
Keyword [en]
Availability, Communication system, Critical information infrastructure, DMS, ICT, OMS, SCADA, Smart grid, Critical information infrastructures, Communication systems, Decision making, Diamonds, Electric utilities, Employment, Information technology, Maintenance, Power generation, Quality assurance, Redundancy, Innovation
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-49930DOI: 10.1109/ISGTEUROPE.2010.5638912Scopus ID: 2-s2.0-78650528722ISBN: 9781424485109 (print)OAI: oai:DiVA.org:kth-49930DiVA: diva2:460687
Conference
IEEE PES Innovative Smart Grid Technologies Conference Europe, ISGT Europe 2010. Gothenburg. 11 October 2010 - 13 October 2010
Note
QC 20111205Available from: 2011-11-30 Created: 2011-11-30 Last updated: 2011-12-05Bibliographically approved

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Franke, UlrikNordström, Lars

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