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The goal of the IEC 61850 standard

Interoperability The ability for IED’s from one or several manufacturer to exchange information and use the information for the their own functions.

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The goal of the IEC 61850 standard

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  1. Interoperability The ability for IED’s from one or several manufacturer to exchange information and use the information for the their own functions. Long Term StabilityThe standard shall be future proof, i.e. it must be able to follow the progress in communication technology as well as evolving system requirements. Free ConfigurationThe standard shall support different philosophies and allow a free allocation of functions e.g. it will work equally well for centralized (RTU like) or decentralized (SCS like) systems. The goal of the IEC 61850 standard

  2. System Aspects Part 1: Introduction and Overview Part 2: Glossary Part 3: General Requirements Part 4: System and Project Management Part 5: Comm Requirements for Functions and Device Models Data Models Basic Communication Structure for Substations and Feeder Equipment Part 7-4: Compatible Logical Node Classes and Data Classes Part 7-3: Common Data Classes Abstract Comm. Services Basic Communication Structure for Substations and Feeder Equipment Part 7-2: Abstract Communication Services (ACSI) Part 7-1: Principles and Models Configuration Part 6: Configuration Lan-guage for electrical Substation IED’s Mapping to real Comm. Networks (SCSM) Part 8-1: Mapping to MMS Part 9-1: Serial Unidirectional Multidrop Point-to-Point link Part 9-2: Mapping on Ethernet based Process Bus Testing Part 10: Conform. Testing WD CD CDV FDIS IS FDIS under preparation The Contents of IEC 61850 State: August 2002

  3. Control Q0/CSWI Q8/CSWI Q9/CSWI Bay-HMI IHMI Earthing Switch Q8_L1/XSWI Gas density mon. Q8_L1/SIMS Isolator Q9_L1/XSWI Gas density mon. Q9_L1/SIMS Distance Protection PDIS Circuit BreakerQ0_L1/XCBRGas density mon. Q0_L1/SIMS The data model is process oriented... Secondary technology Primary technology

  4. Local operation mandatory Switch position mandatory Operation capability mandatory Operation counter optional … Circuit BreakerXCBR IEC 61850 defines objects, data and services The objects are the functions, that the user needs and knows from everyday experience. They are called “Logical Nodes” in the standard. For example XCBR with all defined data: Mandatory and optional Data are associated with all objects Access to object and data is standardized (Services) The Objects and Data are self describing

  5. Application Domain Substation Long-term definition Safe-guarding investments Slow Application Objects • Services • Speed of Technology Change Abstract Interface Adaptation per selected stack Mapping Stack Interface 7 MMS 6 5 4 TCP/IP Stack selection following state-of-art Communication technology 3 Communication Technology 2 Fast Ethernet 1 ISO/OSI seven layer stack From function (application) to communication Approach of IEC61850 The Data model is mapped unambiguously to an existing stack

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