Some 20 years after the first draft IEC 61850-8-2 SCSM (Mapping to Profibus FMS) we could expect the real IEC 61850-8-2 to be available by end of 2015.
The draft 8-2 provides an additional mapping of the messages of MMS by XER (XML Encoding Rule) and XMPP.
The MMS messages for IEC 61850-8-2 (above TCP/TLS/XMPP) are just differently encoded as in IEC 61850-8-1, as can be seen by the following example:
ASN.1 BER uses a binary encoding that produces less overhead compared to XER. But there will be many benefits provided by IEC 61850-8-2.
According to a presentation by Siemens during the Hanover Fair 2015, these are the main conclusions:
- It provides a secure and powerful communication for public networks considering end-to-middle and end-to-end security relations
- IEC 61850-8-2 is intended to use for power management and demand response of DER (distributed energy resources)
- In 2015 the IEC TC57 working group WG17 will finalize and publish this new specification
Click HERE for the full presentation [pdf, 3 MB]
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