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The Common Information Model CIM

IEC 61968/61970 and 62325 - A practical introduction to the CIM

verfasst von: Mathias Uslar, Michael Specht, Sebastian Rohjans, Jörn Trefke, Jose Manuel Vasquez Gonzalez

Verlag: Springer Berlin Heidelberg

Buchreihe : Power Systems

Enthalten in: Springer Professional "Wirtschaft+Technik" , Springer Professional "Technik"

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Über dieses Buch

Within the Smart Grid, the combination of automation equipment, communication technology and IT is crucial. Interoperability of devices and systems can be seen as the key enabler of smart grids. Therefore, international initiatives have been started in order to identify interoperability core standards for Smart Grids.

IEC 62357, the so called Seamless Integration Architecture, is one of these very core standards, which has been identified by recent Smart Grid initiatives and roadmaps to be essential for building and managing intelligent power systems. The Seamless Integration Architecture provides an overview of the interoperability and relations between further standards from IEC TC 57 like the IEC 61970/61968: Common Information Model - CIM.

CIM has proven to be a mature standard for interoperability and engineering; consequently, it is a cornerstone of the IEC Smart Grid Standardization Roadmap. This book provides an overview on how the CIM developed, in which international projects and roadmaps is has already been covered and describes the basic use cases for CIM. This book has been written for both Power Engineers trying to get to know the EMS and business IT part of Smart Grid and for Computer Scientist finding out where ICT technology is applied in EMS and DMS Systems. The book is divided into two parts dealing with the theoretical foundations and a practical part describing tools and use cases for CIM.

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Inhaltsverzeichnis

Frontmatter

The CIM: Foundations

Frontmatter

1. Introduction

Abstract

The Smart Grid is one of the dominating topics discussed today in the energy domain. Due to previous experiences as well as several national and international studies and roadmaps like [12], [108] or [92], it is generally accepted, that an appropriate Information and Communication Technologies (ICT) infrastructure is needed to control the future power type of power transmission and distribution grid and gather relevant data. Furthermore, the use of standards within this future infrastructure is indispensable as outlined by the aforementioned roadmaps and studies in order to reach a proper interoperability level.

Mathias Uslar, Michael Specht, Sebastian Rohjans, Jörn Trefke, José Manuel Vasquez González

2. Basic Technologies

Abstract

The CIM is described in the Unified Modeling Language (UML) which is specified by the Object Management Group (OMG). To understand the CIM it is required to have basic knowledge of UML. Furthermore the application of the CIM usually involves other description languages like the eXtensible Markup Language (XML) or the Resource Description Framework (RDF) and it is realized within Serviceoriented Architectures (SOA) with corresponding platform support by so-called middle ware. This chapter describes the basic prerequisites to understand and apply the CIM. At first the necessary UML basics are being facilitated, secondly XML as a method of serialization and instantiation is outlined and RDF is briefly introduced in the third section of this chapter. Finally, Service-oriented Architectures as an environment for the integration of applications with the CIM are presented.

Mathias Uslar, Michael Specht, Sebastian Rohjans, Jörn Trefke, José Manuel Vasquez González

3. The IEC Common Information Model

Abstract

The CIM is standardized within three different IEC standard series, namely IEC 61970, IEC 61968 and IEC 62325. Each of them has a different background and covers different use cases. However, all of them consist of many sub parts which are under continuous development lead by distinct working groups. Since they all rely on the same data model strong liaisons have been established and the CIM user group was founded as a central place for discussions and cooperations.

Mathias Uslar, Michael Specht, Sebastian Rohjans, Jörn Trefke, José Manuel Vasquez González

4. Utilization of the CIM

Abstract

Despite the fact that CIMmessages can be used on different technologies, this chapter focuses on the XML based message transportation. The IEC 61968 ”System Interfaces for Distribution Management” standard series is intended to facilitate interapplication integration of various distributed software application systems. Loosely coupled applications with a high rate of heterogeneity in languages, operating systems and protocols and a need to exchange data are the target of this standard series [41] as graphically clarified in figure 4.1. This is the main use case for using XML based messaging with CIM. Therefore, the IEC 61968 and the subparts will be dominant in the following parts.

Mathias Uslar, Michael Specht, Sebastian Rohjans, Jörn Trefke, José Manuel Vasquez González

The CIM: Application and Examples

Frontmatter

5. Examples of Using the CIM

Abstract

The XML based message exchange is one of the main use cases to the application of the CIM. Roughly said, there are two applications available. The first one is the standardized message exchange based on standardized interfaces specified in the standards IEC 61968-3 to IEC 61968-9. The second one is the coupling of two heterogeneous systems with a custom interface.

Mathias Uslar, Michael Specht, Sebastian Rohjans, Jörn Trefke, José Manuel Vasquez González

6. Toolsupport

Abstract

The use of tools to integrate the CIM is inevitable to minimize the implementation effort and the costs. Also the tools can minimize the error rate and ensure further interoperability if the same tool chains are used, so generated artifacts (like RDF Schema or XML Schema files) as partial result can be exchanged between different parties.

Mathias Uslar, Michael Specht, Sebastian Rohjans, Jörn Trefke, José Manuel Vasquez González

7. Participation in the CIMug

Abstract

The CIM Users Group (CIMug) is an association of users of the CIM. Members of the CIMug are utilities, software vendors, manufacturers, consultants and R&D organizations. Currently, over ninety companies, including more than thirty electric utilities, from twenty six countries joined the CIMug. The CIM Users Group was founded in 2005 as subgroup of the UCA International Users Group (UCAIug), a not-for-profit corporation [7]. The CIMug aims at ”Connecting The Utility World Through A Common Data Model” [7]. Within this it aims at developing the CIM model consensus and consistency across the industry and hence supporting its members to adapt IEC TC 57 standards [6]. Apart from managing and communicating issues concerning the CIM model the CIMug shares technology basics, best practices and technical resources.

Mathias Uslar, Michael Specht, Sebastian Rohjans, Jörn Trefke, José Manuel Vasquez González

8. Perspective

Abstract

Within this chapter, we provide an insight to the new OPC UA Unified Architecture and a mapping of the CIM to its Address Space Model which was developed using a Sparx EA Enterprise Architect plug-in. To assess the proper use of the CIM, the XML Naming and Definition rules have to be obeyed as well as the profiling mechanisms established by the model maintainers. Testing and conformance checking with the CIM are therefore issues coming up. We will introduce ideas very similar to those of the IEC 61850 IEC TC57 WG 10 to deal with those issues when working with the CIM.

Mathias Uslar, Michael Specht, Sebastian Rohjans, Jörn Trefke, José Manuel Vasquez González

Backmatter

Titel: The Common Information Model CIM
verfasst von: Mathias Uslar
Michael Specht
Sebastian Rohjans
Jörn Trefke
Jose Manuel Vasquez Gonzalez
Copyright-Jahr: 2012
Verlag: Springer Berlin Heidelberg
Electronic ISBN: 978-3-642-25215-0
Print ISBN: 978-3-642-25214-3
DOI: https://doi.org/10.1007/978-3-642-25215-0