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Use of the CIM framework for data management in maintenance of electricity distribution networks
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.ORCID iD: 0000-0003-3014-5609
2006 (English)Doctoral thesis, comprehensive summary (Other scientific)
Abstract [en]

Aging infrastructure and personnel, combined with stricter financial constraints has put maintenance, or more popular Asset Management, at the top of the agenda for most power utilities. At the same time the industry reports that this area is not properly supported by information systems. Today’s power utilities have very comprehensive and complex portfolios of information systems that serve many different purposes. A common problem in such heterogeneous system architectures is data management, e.g. data in the systems do not represent the true status of the equipment in the power grid or several sources of data are contradictory. The research presented in this thesis concerns how this industrial problem can be better understood and approached by novel use of the ontology standardized in the Common Information Model defined in IEC standards 61970 & 61968.

The theoretical framework for the research is that of data management using ontology based frameworks. This notion is not new, but is receiving renewed attention due to emerging technologies, e.g. Service Oriented Architectures, that support implementation of such ontological frameworks. The work presented is empirical in nature and takes its origin in the ontology available in the Common Information Model. The scope of the research is the applicability of the CIM ontology, not as it was intended i.e. in systems integration, but for analysis of business processes, legacy systems and data. The work has involved significant interaction with power distribution utilities in Sweden, in order to validate the framework developed around the CIM ontology. Results from the research have been published continuously, this thesis consists of an introduction and summary and papers describing the main contribution of the work.

The main contribution of the work presented in this thesis is the validation of the proposition to use the CIM ontology as a basis for analysis existing legacy systems. By using the data models defined in the standards and combining them with established modeling techniques we propose a framework for information system management. The framework is appropriate for analyzing data quality problems related to power systems maintenance at power distribution utilities. As part of validating the results, the proposed framework has been applied in a case study involving medium voltage overhead line inspection. In addition to the main contribution, a classification of the state of the practice system support for power system maintenance at utilities has been created. Second, the work includes an analysis and classification of how high performance Wide Area communication technologies can be used to improve power system maintenance including improving data quality.

Place, publisher, year, edition, pages
Stockholm: KTH , 2006.
Series
Trita-EE, ISSN 1653-5146 ; 2006:17
Keyword [en]
Asset Management, Electricity Distribution Networks, Information Systems, Data Quality, Power System Modeling, Enterprise Architecture, Common Information Model, Ontology
National Category
Information Science
Identifiers
URN: urn:nbn:se:kth:diva-3985OAI: oai:DiVA.org:kth-3985DiVA: diva2:10260
Public defence
2006-06-07, F3, Lindstedtsvägen 26, Stockholm, 10:00
Opponent
Supervisors
Note
QC 20100614Available from: 2006-05-22 Created: 2006-05-22 Last updated: 2010-06-14Bibliographically approved
List of papers
1. Strategies for implementing IT support for Asset Management at electric utilities
Open this publication in new window or tab >>Strategies for implementing IT support for Asset Management at electric utilities
2004 (English)In: 2004 International Conference on Power System Technology - POWERCON, Vols 1 and 2, 2004, 1049-1054 p.Conference paper, Published paper (Other academic)
Abstract [en]

The last ten to twenty years have seen a steadily growing awareness across industries of the benefits of proper Asset Management, as well as the obvious disadvantages of poor management of assets. This awareness is specifically apparent in the Power Industry, with an aging infrastructure and workforce coupled with economic pressures enforced by re-regulation and the current economic downturn. Obviously, an apparent tool for utilities seeking to improving efficiency and effectiveness of asset management strategies is the implementation of IT-systems in support of the operational processes. To investigate current state of the practice regarding IT systems for Asset Management a survey has been conducted among a number of mid-sized utilities, and the paper presents the preliminary results of this study. The empirical data for the study comes not only from electric utilities, but also from the pulp and paper industry thereby providing excellent opportunities for benchmarking and comparison across industries. Interestingly, the preliminary findings show large differences in both chosen strategies for asset management as well as use of IT systems in support of the operational processes. The survey also shows that the utilities have chosen very different strategies for improving their asset management processes. In addition, the utilities have very differing priorities when it comes to implementation of IT systems for Asset Management. In short, five specific areas providing opportunity for improvement regarding IT system use have been identified. These are: Asset documentation, Resource Management, Production Management, Workflow management and Maintenance planning tools. Of further interest are the differences between how these areas of improvement are approached among the utilities and pulp and paper industry, respectively. The paper provides, based on the data from the survey, an analysis and discussion on strategies for Asset Management as well as IT system implementation based on the identified Areas of Opportunity.

National Category
Engineering and Technology
Identifiers
urn:nbn:se:kth:diva-13348 (URN)000228358501010 ()2-s2.0-20444433585 (Scopus ID)
Note
QC 20100614Available from: 2010-06-14 Created: 2010-06-14 Last updated: 2010-07-14Bibliographically approved
2. A broadband wide-area network as an enabler of improved power system maintenance
Open this publication in new window or tab >>A broadband wide-area network as an enabler of improved power system maintenance
2006 (English)In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 21, no 1, 108-112 p.Article in journal (Refereed) Published
Abstract [en]

Wide-area networks (WANs) are being deployed worldwide at power utilities. By replacing vintage narrowband solutions, broadband communications can now be used for an entire utility enterprise. One new possibility that has opened up is to improve power system maintenance. During the last ten years, the benefits of adequate asset management have become increasingly clear in the power industry due to the economic pressures and aging infrastructure. An apparent tool to improve the asset-management strategies is the implementation of information technology systems that support the operational processes. The impact of these systems can be further enhanced by efficient communications, allowing the proliferation of functionality and data access. This paper describes the initial stages in analyzing the combined effects of enhanced communication and maintenance requirements. It provides a useful maintenance categorization, based on empirical data. Also, areas of improvement for power system maintenance are elucidated together with the benefit of enhanced communications.

National Category
Engineering and Technology
Identifiers
urn:nbn:se:kth:diva-13349 (URN)10.1109/TPWRD.2005.852266 (DOI)000234305200014 ()2-s2.0-33244467203 (Scopus ID)
Note
QC 20100614Available from: 2010-06-14 Created: 2010-06-14 Last updated: 2017-12-12Bibliographically approved
3. Approaches for Achieving IT support for Asset Management
Open this publication in new window or tab >>Approaches for Achieving IT support for Asset Management
2005 (English)In: IEE Conference Publication, 2005, 19-22 p.Conference paper, Published paper (Refereed)
Abstract [en]

Thispaper introduces the challenges apparent when introducing IT support forasset management. This is further accentuated in the power industryby challenges with an aging infrastructure, workforce and economic pressuresenforced by deregulation. Since asset management spans so many organisationaldepartments and requires support from many systems it would benefitgreatly from a truly integrated utility. Utilities seeking to improvetheir asset management capabilities are supporting the strategic planning andoperational processes. This paper presents a set of approaches thatutilities may consider when implementing the integrated utility vision. Twoadditional aspects need to be considered when using current integrationapproaches. These are the relation between business process and dataand the allocation of this data over the existing andnew systems. This paper also analysis these two aspects thatneeds standardised CIM framework and well established UML extensions.

Series
IEE Conference Publication, ISSN 0537-9989 ; Issue CP504 / Volume 6
National Category
Engineering and Technology
Identifiers
urn:nbn:se:kth:diva-5768 (URN)10.1049/cp:20051382 (DOI)2-s2.0-28644435894 (Scopus ID)0 86341 529 6 (ISBN)
Conference
18th International Conference and Exhibition on Electricity Distribution,Turin, Italy, 6-9 June, 2005
Note
QC 20100614Available from: 2006-05-22 Created: 2006-05-22 Last updated: 2011-12-01Bibliographically approved
4. Extended UML Modeling for Risk Management of Utility Information System Integration
Open this publication in new window or tab >>Extended UML Modeling for Risk Management of Utility Information System Integration
2005 (English)In: 2005 IEEE Power Engineering Society General Meeting, IEEE , 2005, 913-919 p.Conference paper, Published paper (Refereed)
Abstract [en]

Cost-efficient and effective power system maintenance is dependent on timely access to accurate information about the status of equipment and work orders in planning, execution or in completed status. However, Information Systems at many utilities are not properly configured to support these requirements. Implementation and integration of new and existing systems often requires large effort involving many parts of the utility and still in many cases does not lead to desired gains in efficiency and effectiveness.

This paper proposes a modeling approach using extensions to the Unified Modeling Language (UML) that facilitate modeling of power system maintenance at utilities. The purpose of the approach is to enhance analysis of the Information Systems used in support of power system maintenance. The benefits of using UML have already been shown in the power industry by its use in creating the Common Information Model (CIM). The benefits of using the proposed approach are that it better captures the interorganizational challenges when implementing and integrating Information System for maintenance of power systems thereby reducing the risk of failure.

Place, publisher, year, edition, pages
IEEE, 2005
Series
IEEE Power Engineering Society General Meeting, ISSN 1932-5517
Keyword
common information model, information systems, object-orientation, power system maintenance, risk management, unified modeling language
National Category
Energy Engineering
Identifiers
urn:nbn:se:kth:diva-5769 (URN)10.1109/PES.2005.1489528 (DOI)000232799400150 ()2-s2.0-27144500242 (Scopus ID)0-7803-9156-X (ISBN)978-078039156-7 (ISBN)
Conference
2005 IEEE Power Engineering Society General Meeting, San Francisco, CA, United States; 12 June 2005 through 16 June 2005
Note

QC 20100614 QC 20111014

Available from: 2006-05-22 Created: 2006-05-22 Last updated: 2014-12-08Bibliographically approved
5. Analyzing utility information system architectures using the common information model
Open this publication in new window or tab >>Analyzing utility information system architectures using the common information model
2005 (English)In: 2005 CIGRE/IEEE PES International Symposium, 2005, 274-281 p.Conference paper, Published paper (Refereed)
Abstract [en]

Properly applied, information technology can go a long way to meet challenges introduced by the changes in power flow introduced by the opening of electricity markets. To provide efficient support to utilities information systems must be well adapted to current and future business needs. For some years the goal of information systems support at utilities have been an integrated suite of IT systems that are well aligned to the business processes. This, to some extent utopian, goal is sometimes referred to as the Integrated Utility.

This paper presents experiences with applying a modelling approach, using established notation and standards that can be used to analyze utility-wide information system architectures. The specific characteristic of the modelling approach presented in this paper is that the modelling is done with the IEC standardised Common Information Model as a basis. The benefits of using the approach is that it provides a straightforward method to create consistent documentation of use of data and functionality across several systems. The output created consist of unambiguous UML compliant models, and standards based functionality listings in which data and functionality duplication and overlap can be identified.

The paper is concluded with a presentation of a case study in which the proposed approach was applied to a real world utility's business processes and systems. The case study shows promising results for the approach, but also underlines the need for farther work.

Keyword
common information model, enterprise architecture, information systems, object-orientation, power system maintenance, risk management, unified modeling language
National Category
Engineering and Technology
Identifiers
urn:nbn:se:kth:diva-5770 (URN)10.1109/CIGRE.2005.1532752 (DOI)000235916200034 ()2-s2.0-33749076478 (Scopus ID)0-7803-9191-8 (ISBN)
Conference
CIGRE/IEEE PES International Symposium Location: San Antonio, TX Date: OCT 05-07, 2005
Note
QC 20100614Available from: 2006-05-22 Created: 2006-05-22 Last updated: 2011-12-01Bibliographically approved

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