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E154713
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C: Using the IEC61850 Protocol Ethernet Network Server
Electro
Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
Electro
Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
In summary, the IEC 61850 standard was originally developed for electrical substa-
tion automation, but has been applied to Distributed Energy resources, distribution
line equipment, hydro-electric power plants, and wind power plants. Edition 2 of IEC
61850 further supports the IEC 61850 protocol being used for processes other than
substation automation.
C.1.1: Communication in IEC 61850
Understanding the role of clients and servers, and publishers and subscribers, is key
to understanding the communication between IEC 61850 devices.
C.1.1.1: Client/Server Communication
A client is the requester (sink) of information while the server is the responder
(source) of information. Information generally flows on a request-response basis with
the client issuing the request and the server issuing the response. However, the con-
cept of servers is extended to provide autonomous transmissions when “interesting”
events occur within the server. This information flow is always to the client requesting
this “interesting information.” Clients are the devices or services which “talk” to IEC
61850 servers. The function of the client is to configure the server “connection,” set
up any dynamic information in the server, enable the reporting mechanisms, and pos-
sibly interrogate specific information from the server. Most clients are relatively pas-
sive devices which await information from the server but perform little direct ongoing
interactions with them except for control operations.
Some clients are used for diagnostic purposes. These devices generally perform ongo-
ing direct interrogation of the servers. A specific example is the “desktop client,”
where the engineer remotely diagnoses system problems or retrieves data which is
not normally sent from the server (for example, power quality information).
IEC 61850 clients are highly interoperable with IEC 61850 servers. Clients are able to
retrieve the server object directory (when needed) and then perform any allowable
operation with that server.
Example clients include: Omicron IED scout, SISCO AX-S4 61850, TMW Hammer,
KalkiTech gateway, Siemens DIGSI
Summary of Contents for Shark 100T
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