ABB REG650 Product Manual

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16. Station communicationIEC 61850-8-1 communication protocolThe IED supports the communication protocols IEC 61850-8-1and DNP3 over TCP/IP. All operational information and controlsare available through these protocols. However, somecommunication functions, for example, horizontalcommunication (GOOSE) between the IEDs, is only enabled bythe IEC 61850-8-1 communication protocol.The IED is equipped with optical Ethernet rear port(s) for thesubstation communication standard IEC 61850-8-1. IEC61850-8-1 protocol allows intelligent electrical devices (IEDs)from different vendors to exchange information and simplifiessystem engineering. Peer-to-peer communication according toGOOSE is part of the standard. Disturbance files uploading isprovided.Disturbance files are accessed using the IEC 61850-8-1protocol. Disturbance files are also available to any Ethernetbased application via FTP in the standard Comtrade format.Further, the IED can send and receive binary values, doublepoint values and measured values (for example from MMXUfunctions), together with their quality bit, using the IEC61850-8-1 GOOSE profile. The IED meets the GOOSEperformance requirements for tripping applications insubstations, as defined by the IEC 61850 standard. The IEDinteroperates with other IEC 61850-compliant IEDs, andsystems and simultaneously reports events to five differentclients on the IEC 61850 station bus.The Denial of Service functions DOSLAN1 and DOSFRNT areincluded to limit the inbound network traffic. Thecommunication can thus never compromise the primaryfunctionality of the IED.The event system has a rate limiter to reduce CPU load. Theevent channel has a quota of 10 events/second after the initial30 events/second. If the quota is exceeded the event channeltransmission is blocked until the event changes is below thequota, no event is lost.All communication connectors, except for the front portconnector, are placed on integrated communication modules.The IED is connected to Ethernet-based communicationsystems via the fibre-optic multimode LC connector(s)(100BASE-FX).The IED supports SNTP and IRIG-B time synchronizationmethods with a time-stamping accuracy of ±1 ms.• Ethernet based: SNTP and DNP3• With time synchronization wiring: IRIG-BThe IED supports IEC 60870-5-103 time synchronizationmethods with a time stamping accuracy of ±5 ms.Table 1. Supported station communication interfaces and protocolsProtocol Ethernet Serial100BASE-FX LC Glass fibre (ST connector) EIA-485IEC 61850–8–1 ● - -DNP3 ● ● ●IEC 60870-5-103 - ● ●● = SupportedHorizontal communication via GOOSE for interlockingGOOSE communication can be used for exchanginginformation between IEDs via the IEC 61850-8-1 stationcommunication bus. This is typically used for sendingapparatus position indications for interlocking or reservationsignals for 1-of-n control. GOOSE can also be used toexchange any boolean, integer, double point and analogmeasured values between IEDs.DNP3 protocolDNP3 (Distributed Network Protocol) is a set ofcommunications protocols used to communicate data betweencomponents in process automation systems. For a detaileddescription of the DNP3 protocol, see the DNP3Communication protocol manual.IEC 60870-5-103 communication protocolIEC 60870-5-103 is an unbalanced (master-slave) protocol forcoded-bit serial communication exchanging information with acontrol system, and with a data transfer rate up to 19200 bit/s.In IEC terminology, a primary station is a master and asecondary station is a slave. The communication is based on apoint-to-point principle. The master must have software thatcan interpret IEC 60870-5-103 communication messages.IEC 60870-5-103 protocol can be configured to use either theoptical serial or RS485 serial communication interface on theCOM03 or the COM05 communication module. The functionsOperation selection for optical serial OPTICALPROT andOperation selection for RS485 RS485PROT are used to selectthe communication interface.Generator protection REG650 1MRK 502 050-BEN BProduct version: 1.3ABB 27