The derived quality is the extension to IEC 61850-7-3. If the derived bit is set to 1,
it indicates that there is no physical sensor within the system to determine the
value, but the value is derived from a combination of values from other physical
sensors. Typically, I4 or U4 are derived if they are calculated as the sum of the
three phase quantities.
The configured MU channel quality as described in IEC 61850-7-3 is available on
LHMI. This can be viewed under
Main Menu/Diagnostics/Merging units/
MUX:XXXX/XX Quality
.
IEC16000074-1-en.vsdx
IEC16000074 V1 EN-US
Figure 353:
Configured MU channel quality in LHMI
17.5.7
Technical data
SEMOD172233-1 v1
SEMOD172236-2 v3
Table 513:
IEC/UCA 61850-9-2LE communication protocol
Functions
Value
Protocol
IEC/UCA 61850-9-2LE
Communication speed for the IEDs
100BASE-FX
17.6
LON communication protocol
IP14420-1 v1
17.6.1
Functionality
M11924-3 v6
An optical network can be used within the substation automation system. This
enables communication with the IED through the LON bus from the operator’s
workplace, from the control center and also from other terminals.
LON communication protocol is specified in LonTalkProtocol Specification
Version 3 from Echelon Corporation and is designed for communication in control
networks. These networks are characterized by high speed for data transfer, short
messages (few bytes), peer-to-peer communication, multiple communication
media, low maintenance, multivendor equipment, and low support costs. LonTalk
supports the needs of applications that cover a range of requirements. The protocol
Section 17
1MRK 506 382-UEN A
Station communication
710
Line distance protection REL650 2.2 IEC
Technical manual
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