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IEC 61850 is an international standard defining communication protocols for intelligent electronic devices at electrical substations.It is a part of the International Electrotechnical Commission's (IEC) Technical Committee 57 reference architecture for electric power systems. [1]
Modbus TCP nomenclature is the same as for the Modbus over Serial line protocol, as any device which send out a Modbus command, is the 'client' and the response comes from a 'server'. [29] The ADU for Modbus TCP is officially called Modbus TCP/IP ADU by the Modbus organization [30] and is also called Modbus TCP frame by other parties. [3]
It is primarily used for communications between a master station and RTUs or IEDs. ICCP, the Inter-Control Center Communications Protocol (a part of IEC 60870-6), is used for inter-master station communications. Competing standards include the older Modbus protocol and the newer IEC 61850 protocol. DNP overview diagram
IEC TC 57 WG19 is involved in the harmonization CIM & SCL. This involves: Mapping of logical nodes of IEC 61850 (SCL) to equipment defined in CIM. Use Web Ontology Language to define the mapping patterns for the areas to which the automatic mapping cannot be performed. The complete approach should not modify the existing models to a large extent.
System Configuration description Language formerly known as Substation Configuration description Language (SCL) is the language and representation format specified by IEC 61850 for the configuration of electrical substation devices. This includes representation of modeled data and communication services specified by IEC 61850–7–X standard ...
Modbus PEMEX; Modbus Plus; Modbus RTU or ASCII or TCP; MPI – Multi Point Interface; OSGP – The Open Smart Grid Protocol, a widely use protocol for smart grid devices built on ISO/IEC 14908.1; OpenADR – Open Automated Demand Response; protocol to manage electricity consuming/controlling devices
IEC 62351-5 — Security for any profiles including IEC 60870-5 (e.g., DNP3 derivative) TLS for TCP/IP profiles and encryption for serial profiles. IEC 62351-6 — Security for IEC 61850 profiles. VLAN use is made as mandatory for GOOSE; RFC 2030 to be used for SNTP; IEC 62351-7 — Security through network and system management.
The standard has specified five mapping (IEC 61400-25-4) to communication protocol stacks in order to address the real wind power business needs for communication. The mappings specified in the part of IEC 61400-25 comprises a mapping to SOAP -based web services , OPC / XML - DA , IEC 61850 -8-1 MMS , IEC 60870-5 -104 and a mapping to DNP3 .