Draft61850-7-2©IEC:2002 -11-57WG10-12(61850-7-2)R3-00/DraftFDIS IEC 61850-5:Communication networks and systems in substations-Part 5:Communication requirements for functions and device models 1EC61850-6: Communication networks and systems in substations -Part 6:Substation automation system configuration language IEC 61850-7-1:Communication networks and systems in substations-Part 7-1:Basic com- munication structure for substation and feeder equipment-Principles and models IEC 61850-7-2:Communication networks and systems in substations-Part 7-2:Basic com- munication structure for substation and feeder equipment-Abstract commu- nication service interface (ACSI) IEC 61850-7-3:Communication networks and systems in substations-Part 7-3:Basic com- munication structure for substation and feeder equipment-Common data classes IEC 61850-7-4:Communication networks and systems in substations-Part 7-4:Basic com- munication structure for substation and feeder equipment-Compatible logical node classes and data classes IEC 61850-8-1:Communication networks and systems in substations-Part 8-1:Specific communication service mapping(SCSM)-Mapping to MMS(ISO/IEC 9506 Part 1 and Part 2) IEC 61850-9-1:Communication networks and systems in substations-Part 9-1:Specific communication service mapping(SCSM)-Serial unidirectional multidrop point to point link IEC 61850-9-2:Communication networks and systems in substations-Part 9-2:Specific communication service mapping(SCSM)-Mapping on a IEEE 802.3 based process bus IEC 61850-10:Communication networks and systems in substations-Part 10:Conformance testing 2002-08-23:(16:30)
Draft 61850-7-2 © IEC:2002 – 11 – 57/WG10-12(61850-7-2)R3-00/DraftFDIS 2002-08-23 : (16:30) IEC 61850-5: Communication networks and systems in substations – Part 5: Communication requirements for functions and device models IEC 61850-6: Communication networks and systems in substations – Part 6: Substation automation system configuration language IEC 61850-7-1: Communication networks and systems in substations – Part 7-1: Basic communication structure for substation and feeder equipment – Principles and models IEC 61850-7-2: Communication networks and systems in substations – Part 7-2: Basic communication structure for substation and feeder equipment – Abstract communication service interface (ACSI) IEC 61850-7-3: Communication networks and systems in substations – Part 7-3: Basic communication structure for substation and feeder equipment – Common data classes IEC 61850-7-4: Communication networks and systems in substations – Part 7-4: Basic communication structure for substation and feeder equipment – Compatible logical node classes and data classes IEC 61850-8-1: Communication networks and systems in substations – Part 8-1: Specific communication service mapping (SCSM) – Mapping to MMS(ISO/IEC 9506 Part 1 and Part 2) IEC 61850-9-1: Communication networks and systems in substations – Part 9-1: Specific communication service mapping (SCSM) – Serial unidirectional multidrop point to point link IEC 61850-9-2: Communication networks and systems in substations – Part 9-2: Specific communication service mapping (SCSM) – Mapping on a IEEE 802.3 based process bus IEC 61850-10: Communication networks and systems in substations – Part 10: Conformance testing
Draft61850-7-2©IEC:2002 -12-57WG10-12(61850-7-2)R3-00/DraftFDIS INTRODUCTION This document is part of a set of specifications which details a layered substation communica- tion architecture.This architecture has been chosen to provide abstract definitions of classes and services such that the specifications are independent of specific protocol stacks,imple- mentations,and operating systems. The IEC 61850 series is intended to provide interoperability between a variety of substation and feeder devices.Communication between these devices is achieved by the definition of a hierarchical class model (e.g.logical device,logical node,data,data set,report control,or log) and services provided by these classes (e.g.get,set,report,define,delete)in parts IEC 61850-7-x. This part of the standard IEC 61850 defines the abstract communication service interface (ACSI)for use in the utility substation domain that require real-time co-operation of intelligent electronic devices.The ACSI has been defined so as to be independent of the underlying communication systems.Specific communication service mappings1(SCSM)are specified in part 8-x(station bus)and part 9-x(process bus)of this standard. This part of IEC 61850 defines the abstract communication service interface in terms of -a hierarchical class model of all information that can be accessed via a communication network, services that operate on these classes,and parameters associated with each service The ACSI description technique abstracts away from all the different approaches to implement the co-operation of the various devices. NOTE 1 Abstraction in ACSI has two meanings.First,only those aspects of a real device (e.g.,a breaker)or a real function that are visible and accessible over a communication network are modelled.This abstraction leads to the hierarchical class models and their behaviour defined in part IEC 61850-7-4,-7-3,and-7-2.Second,the ACSI abstracts from the aspect of concrete definitions on how the devices exchange information;only a conceptual co- operation is defined.The concrete information exchange is defined in the SCSMs. NOTE 2 This part of IEC 61850 does not provide comprehensive tutorial material.It is recommended that parts IEC 61850-5 and IEC 61850-7-1 be read first in conjunction with part IEC 61850-7-2 and part IEC 61850-7-3. 1 The ACSI is independent of the specific mapping.Mappings to standard application layers or middle ware tech- nologies are possible. 2002-08-23:(16:30)
Draft 61850-7-2 © IEC:2002 – 12 – 57/WG10-12(61850-7-2)R3-00/DraftFDIS 2002-08-23 : (16:30) INTRODUCTION This document is part of a set of specifications which details a layered substation communication architecture. This architecture has been chosen to provide abstract definitions of classes and services such that the specifications are independent of specific protocol stacks, implementations, and operating systems. The IEC 61850 series is intended to provide interoperability between a variety of substation and feeder devices. Communication between these devices is achieved by the definition of a hierarchical class model (e.g. logical device, logical node, data, data set, report control, or log) and services provided by these classes (e.g. get, set, report, define, delete) in parts IEC 61850-7-x. This part of the standard IEC 61850 defines the abstract communication service interface (ACSI) for use in the utility substation domain that require real-time co-operation of intelligent electronic devices. The ACSI has been defined so as to be independent of the underlying communication systems. Specific communication service mappings1 (SCSM) are specified in part 8-x (station bus) and part 9-x (process bus) of this standard. This part of IEC 61850 defines the abstract communication service interface in terms of — a hierarchical class model of all information that can be accessed via a communication network, — services that operate on these classes, and — parameters associated with each service. The ACSI description technique abstracts away from all the different approaches to implement the co-operation of the various devices. NOTE 1 Abstraction in ACSI has two meanings. First, only those aspects of a real device (e.g., a breaker) or a real function that are visible and accessible over a communication network are modelled. This abstraction leads to the hierarchical class models and their behaviour defined in part IEC 61850-7-4, -7-3, and -7-2. Second, the ACSI abstracts from the aspect of concrete definitions on how the devices exchange information; only a conceptual cooperation is defined. The concrete information exchange is defined in the SCSMs. NOTE 2 This part of IEC 61850 does not provide comprehensive tutorial material. It is recommended that parts IEC 61850-5 and IEC 61850-7-1 be read first in conjunction with part IEC 61850-7-2 and part IEC 61850-7-3. ——————— 1 The ACSI is independent of the specific mapping. Mappings to standard application layers or middle ware technologies are possible
Draft61850-7-2©1EC:2002 -13-57WG10-12(61850-7-2)R3-00/DraftFDIS COMMUNICATION NETWORKS AND SYSTEMS IN SUBSTATIONS Part 7-2:Basic communication structure for substations and feeder equipment-Abstract communication service interface (ACSI) 1 Scope The ACSI applies to the communication in substations and feeder applications.The ACSI pro- vides the following abstract interfaces: 1.Abstract interface describing communications between a client and a remote server for: real-time data access and retrieval, device control, event reporting and logging -publisher/subscriber), self-description of devices(device data dictionary). -data typing and discovery of data types,and file transfer. 2.Abstract interface for fast and reliable system-wide event distribution between an applica- tion in one device and many remote applications in different devices (publisher/subscriber) and for transmission of sampled measured values (publisher/subscriber). This international standard may also be applied to describe device models and functions for additional activities.such as: substation to substation information exchange, substation to control centre information exchange, power plant to control centre information exchange, -information exchange for distributed generation,or information exchange for metering 2002-08-23:(16:30)
Draft 61850-7-2 © IEC:2002 – 13 – 57/WG10-12(61850-7-2)R3-00/DraftFDIS 2002-08-23 : (16:30) COMMUNICATION NETWORKS AND SYSTEMS IN SUBSTATIONS Part 7-2: Basic communication structure for substations and feeder equipment – Abstract communication service interface (ACSI) 1 Scope The ACSI applies to the communication in substations and feeder applications. The ACSI provides the following abstract interfaces: 1. Abstract interface describing communications between a client and a remote server for: — real-time data access and retrieval, — device control, — event reporting and logging — publisher/subscriber), — self-description of devices (device data dictionary), — data typing and discovery of data types, and — file transfer. 2. Abstract interface for fast and reliable system-wide event distribution between an application in one device and many remote applications in different devices (publisher/subscriber) and for transmission of sampled measured values (publisher/subscriber). This international standard may also be applied to describe device models and functions for additional activities, such as: — substation to substation information exchange, — substation to control centre information exchange, — power plant to control centre information exchange, — information exchange for distributed generation, or — information exchange for metering
Draft61850-7-2©1EC:2002 -14-57WG10-12(61850-7-2)R3-00/DraftFDIS 2 Normative references The following normative documents contain provisions,which,through reference in this text. constitute provisions of this international standard.At the time of publication,the editions indi- cated were valid.All normative documents are subject to revision,and parties to agreements based on this international standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below.Members of IEC and ISO maintain registers of currently valid International Standards. 1EC61850-5 Communication networks and systems in substations-Part 5:Com- munication requirements for functions and devices models EC61850-7-1 Basic communication structure for substations and feeder equipment- Part 7-1:Principles and models 1EC61850-7-3 Basic communication structure for substations and feeder equipment- Part 7-3:Common data classes 1EC61850-7-4 Basic communication structure for substations and feeder equipment- Part 7-4:Compatible logical node classes and data classes 1SO/1EC8824-1:1998 Information technology-Abstract Syntax Notation One(ASN.1)- Part 1:Specification of Basic Notation 1SO/1EC19501-1 Information technology-Unified Modeling Language (UML)-Part 1: Specification 2002-08-23:(16:30)
Draft 61850-7-2 © IEC:2002 – 14 – 57/WG10-12(61850-7-2)R3-00/DraftFDIS 2002-08-23 : (16:30) 2 Normative references The following normative documents contain provisions, which, through reference in this text, constitute provisions of this international standard. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this international standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 61850-5 Communication networks and systems in substations – Part 5: Communication requirements for functions and devices models IEC 61850-7-1 Basic communication structure for substations and feeder equipment – Part 7-1: Principles and models IEC 61850-7-3 Basic communication structure for substations and feeder equipment – Part 7-3: Common data classes IEC 61850-7-4 Basic communication structure for substations and feeder equipment – Part 7-4: Compatible logical node classes and data classes ISO/IEC 8824-1:1998 Information technology – Abstract Syntax Notation One (ASN.1) – Part 1: Specification of Basic Notation ISO/IEC 19501-1 Information technology – Unified Modeling Language (UML) – Part 1: Specification
Draft61850-7-2©IEC:2002 -15-57WG10-12(61850-7-2)R3-00/DraftFDIS 3 Definitions For the purpose of this International Standard,the terms and definitions provided in part IEC 61850-2 and the following definitions apply. 3.1 class A description of a set of objects that share the same attributes,services,relationships,and semantics. 3.2 client An entity that requests a service from a server and that receives unsolicited messaes from a server. 3.3 device Defines an entity that performs control,actuating and/or sensing functions and interfaces to other such entities within an automation system. NOTE Devices alone do not perform energy transport functions. 3.4 external equipment Defines an entity that is stand alone,or interfaces to an automation system,and that performs energy transport functions EXAMPLE Transformer,circuit breaker,line NOTE 1 Equipment can contain devices NOTE 2 Equipment cannot have a direct connection to the communication network-only devices can be di- rectly connected to the communication network. 3.5 instance (of a class) An entity that has unique identity,to which a set of services can be applied,and which has a state that stores the effects of the services. NOTE Instance is a synonym for the term object 3.6 Logical device An entity that represents a set of typical substation functions. 3.7 Logical node An entity that represents a typical substation function. 3.8 physical device Defines an entity that represent the physical parts of a device (hardware and operating sys- tem,..). NOTE Physical devices host logical devices. 3.9 PICS-protocol implementation conformance statements PICS contain information regarding the ACSI.This could typically be optional parts,specific restrictions,or add-ons. 2002-08-23:(16:30)
Draft 61850-7-2 © IEC:2002 – 15 – 57/WG10-12(61850-7-2)R3-00/DraftFDIS 2002-08-23 : (16:30) 3 Definitions For the purpose of this International Standard, the terms and definitions provided in part IEC 61850-2 and the following definitions apply. 3.1 class A description of a set of objects that share the same attributes, services, relationships, and semantics. 3.2 client An entity that requests a service from a server and that receives unsolicited messaes from a server. 3.3 device Defines an entity that performs control, actuating and/or sensing functions and interfaces to other such entities within an automation system. NOTE Devices alone do not perform energy transport functions. 3.4 external equipment Defines an entity that is stand alone, or interfaces to an automation system, and that performs energy transport functions EXAMPLE Transformer, circuit breaker, line. NOTE 1 Equipment can contain devices. NOTE 2 Equipment cannot have a direct connection to the communication network – only devices can be directly connected to the communication network. 3.5 instance (of a class) An entity that has unique identity, to which a set of services can be applied, and which has a state that stores the effects of the services. NOTE Instance is a synonym for the term object. 3.6 Logical device An entity that represents a set of typical substation functions. 3.7 Logical node An entity that represents a typical substation function. 3.8 physical device Defines an entity that represent the physical parts of a device (hardware and operating system, ...). NOTE Physical devices host logical devices. 3.9 PICS – protocol implementation conformance statements PICS contain information regarding the ACSI. This could typically be optional parts, specific restrictions, or add-ons