Communication Protocol
PRS-7367 313
9.3 Network Topology
9.3.1 Star Topology
Each equipment is connected with an exchanger via communication cable, and thereby it forms a
star structure network. Dual-network is recommended in order to increase reliability. SCADA is
also connected to the exchanger and will play a role of master station, so every equipment which
has been connected to the exchanger will play a role of slave unit.
9.3.2 PRP Topology
This network topology is supported by the device.
9.3.3 RSTP Topology
This network topology is supported by the device.
9.4 IEC61850 Protocol
9.4.1 Overview
The IEC 61850 standard is the result of years of work by electric utilities and vendors of electronic
equipment to produce standardized communications systems. IEC 61850 is a series of standards
describing client/server and peer-to-peer communications, substation 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 service interface (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 classes and 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
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