Hitachi Relion 670 Series Applications Manual page 324

Section 15
Monitoring
Setting
PRepTyp
PDbRepInt
PHiHiLim
PHiLim
PLowLim
PLowLowlLim
PLimHyst
Measurement function application for a power transformer
Single line diagram for this application is given in Figure 159.
8,0 MVA
110/15kV
IEC16000125 V1 EN-US
Figure 159:
In order to measure the active and reactive power as indicated in figure 159, it is necessary to do the
following:
1. Set correctly all CT and VT and phase angle reference channel PhaseAngleRef data using
PCM600 for analog input channels
2. Connect, in PCM600, measurement function to LV side CT & VT inputs
3. Set the setting parameters for relevant Measurement function as shown in table 39.
The power P&Q measurement is needed towards busbar (not towards IED, as default). Proper
inversion of current should be done in SMAI block for the current channels in order to get correct
318
Short Description
Reporting type
Cycl: Report interval (s), Db: In %
of range, Int Db: In %s
High High limit (physical value)
High limit (physical value)
Low limit (physical value)
Low Low limit (physical value)
Hysteresis value in % of range
(common for all limits)
110kV Busbar
200/1
P Q
600/5
15/0,1kV
15kV Busbar
IEC16000125-1-en.vsdx
Single line diagram for transformer application
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Selected Comments
value
db Select amplitude deadband supervision
5 Set ±Δdb=1,3 MW that is, 2% (larger changes
than 1,3 MW will be reported)
120 High alarm limit that is, extreme overload alarm
100 High warning limit that is, overload warning
-100 Low warning limit. Not active
-120 Low alarm limit. Not active
2 Set ±Δ Hysteresis MW that is, 2%
IED
UL1 & UL2
1MRK506375-UEN Rev. N
SEMOD54481-61 v9
Railway application RER670
Application manual