GE Multilin F60 Feeder Protection System C-1APPENDIX C C.1 OVERVIEWCAPPENDIX C IEC 61850 COMMUNICATIONSC.1OVERVIEW C.1.1 INTRODUCTIONThe IEC 61850 standard is the result of electric utilities and vendors of electronic equipment to produce standardized com-munications systems. IEC 61850 is a series of standards describing client/server and peer-to-peer communications, sub-station design and configuration, testing, environmental and project standards. The complete set includes:• IEC 61850-1: Introduction and overview• IEC 61850-2: Glossary• IEC 61850-3: General requirements• IEC 61850-4: System and project management• IEC 61850-5: Communications and requirements for functions and device models• IEC 61850-6: Configuration description language for communication in electrical substations related to IEDs• IEC 61850-7-1: Basic communication structure for substation and feeder equipment - Principles and models• IEC 61850-7-2: Basic communication structure for substation and feeder equipment - Abstract communication serviceinterface (ACSI)• IEC 61850-7-3: Basic communication structure for substation and feeder equipment – Common data classes• IEC 61850-7-4: Basic communication structure for substation and feeder equipment – Compatible logical node classesand data classes• IEC 61850-8-1: Specific Communication Service Mapping (SCSM) – Mappings to MMS (ISO 9506-1 and ISO 9506-2)and to ISO/IEC 8802-3• IEC 61850-9-1: Specific Communication Service Mapping (SCSM) – Sampled values over serial unidirectional multi-drop point to point link• IEC 61850-9-2: Specific Communication Service Mapping (SCSM) – Sampled values over ISO/IEC 8802-3• IEC 61850-10: Conformance testingThese documents can be obtained from the IEC (http://www.iec.ch). It is strongly recommended that all those involved withany IEC 61850 implementation obtain this document set.C.1.2 COMMUNICATION PROFILESIEC 61850 specifies the use of the Manufacturing Message Specification (MMS) at the upper (application) layer for transferof real-time data. This protocol has been in existence for several of years and provides a set of services suitable for thetransfer of data within a substation LAN environment. Actual MMS protocol services are mapped to IEC 61850 abstract ser-vices in IEC 61850-8-1.The F60 relay supports IEC 61850 server services over both TCP/IP and TP4/CLNP (OSI) communication protocol stacks.The TP4/CLNP profile requires the F60 to have a network address or Network Service Access Point (NSAP) to establish acommunication link. The TCP/IP profile requires the F60 to have an IP address to establish communications. Theseaddresses are located in the SETTINGS PRODUCT SETUP COMMUNICATIONS NETWORK menu. Note that the F60supports IEC 61850 over the TP4/CLNP or TCP/IP stacks, and also operation over both stacks simultaneously. It is possi-ble to have up to five simultaneous connections (in addition to DNP and Modbus/TCP (non-IEC 61850) connections).• Client/server: This is a connection-oriented type of communication. The connection is initiated by the client, and com-munication activity is controlled by the client. IEC 61850 clients are often substation computers running HMI programsor SOE logging software. Servers are usually substation equipment such as protection relays, meters, RTUs, trans-former tap changers, or bay controllers.• Peer-to-peer: This is a non-connection-oriented, high speed type of communication usually between substation equip-ment such as protection relays. GSSE and GOOSE are methods of peer-to-peer communication.• Substation configuration language (SCL): A substation configuration language is a number of files used to describethe configuration of substation equipment. Each configured device has an IEC Capability Description (ICD) file. Thesubstation single line information is stored in a System Specification Description (SSD) file. The entire substation con-figuration is stored in a Substation Configuration Description (SCD) file. The SCD file is the combination of the individ-ual ICD files and the SSD file.
