ABB Relion 620 Series, Руководство по протоколу связи

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3.3.2.1 ASDU 2 type fault number and relative time data
In addition to the absolute event time stamp, the ASDU 2 type requires that the
message also contains a fault number and relative time data. However, these are not
available in the IEC 61850 data model. Therefore, the IEC 60870-5-103 stack
automatically creates a fault number, which is incremented each time the IED's
internal IEC 61850 data attribute LD0.LEDPTRC1.Str.general (Start LED) is
activated. Relative time is calculated from the time stamp of this same IEC 61850 data
attribute. Relative time is represented as a 16 bit millisecond value which saturates to
its maximum value 65535 ms if necessary.
3.3.2.2 Configuring of IEC 60870-5-103 indications
With PCM600 the user can reconfigure the default IEC 60870-5-103 indication
definitions.
• Add or remove existing indications
• Change function type/information number definition of indication
• Restore default function type/information number definition of indications
• Change GI assignment of indications
• Change ASDU type used by the indications
• Change the data coding value (DPI) representation (four-pole objects only)
• Suppress falling edge Class 1 events (non-standard feature)
Function type 0 has a special meaning for indications. An indication with FunType
= ”0” is changed into parameter DevFunType value for event reporting, general
interrogation, and recorded data.
Changing the DPI value representation means that the DPI value only shows the
standard defined ON and OFF values instead of four-pole values ON, OFF,
INTERMEDIATE and FAULTY.
Table 5: Conversion rule for the DPI value representation
True object position IEC 60870-5-103 value
CLOSED ON
OPEN OFF
INTERMEDIATE ON
FAULTY ON
Suppressing the falling edge, that is the OFF Class 1 events, is useful in some cases.
For example, the Operate-OFF signals could often be omitted. This decreases the
amount of Class 1 events and thus saves the bandwidth.
Suppressing the OFF event is an non-standard feature. The standard
requires that every position change of a Class 1 object is reported.
1MRS757647 C
Section 3
Vendor-specific implementation
620 series 13
Communication Protocol Manual