PACiS GTW GTW/EN T/C40, Technical Manual

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Functional Description GTW/EN FT/C40
PACiS GTW gateway
Page 9/12
5. SBUS ACQUISITION
If server is connected with the same database version the PACiS GTW subscribes to the
data defined in its database.
5.1 IEC 61850 acquisition
The PACiS GTW acquires data from SBUS Ethernet network using only REPORT
mechanism. The PACiS GTW does not translate GOOSE.
The REPORT acquisition done by the PACiS GTW gets:
•
data value
•
data state or quality attribute (validity and several kind of invalid state)
•
time tag of last data value change
•
time tag quality attribute (server synchronised or not when event occurs)
Data quality defines if data is valid or several kinds of invalidity: unknown when
disconnected, Saturated, Undefined, Invalid quality attribute is translated to specific SCADA
invalid coding when correspondence exists.
Interested readers can refer to SII document for REPORT mechanism.
5.2 IEC 61850 supported Common Class
PACiS GTW can pick up the following kind of data or common class on IEC 61850. Their
conversion to SCADA protocol is function of the protocol used (MODBUS MODICON has no
mechanism for time tag transmission, unknown state on IEC 61850 is converted by IV bit set
on T101…). The upper communication is detailed in protocol companion standard into the
CT (Communication) chapter.
IEC 61850 information Class Comment
Single-point indication SPS_ST,SPC_ST With time tag, with quality attribute on DP
on time tag
Double-point indication DPS_ST,DPC_ST With/without time tag
Integer indication INS_ST,INC_ST With/without time tag
Protection activation indication ACT_ST With/without time tag
Protection activation Phase
indication ACT_ST_Phs Is managed in 5 SPS_ST
With/without time tag
Directional Protection activation
indication ACD_ST Is managed in 1 SPS_ST and 1 INS_ST
With/without time tag
Directional Protection activation
Phase indication ACD_ST_Phs Is managed in 5 SPS_ST and 5 INS_ST
With/without time tag
Step position indication
(transformers) BSC_ST With/without time tag
Measurement value (AI) MV_MX
WYE_MX
DELTA_MX
APC_MX
With/without time tag
Type: digital, analogue, 1 among N
Formats: floating point, scaled, normalised,
integer
Integrated totals (counters) (Accl) BCR_ST With/without time tag
Single or double control SPC_DPC_CO Direct or Select/execute
Step position control (transformers) BSC_CO With/without time tag
Regulating step control APC_SP Direct or Select/execute
TABLEAU 1: DATA MANAGEMENT