Setting Guidelines - ABB RELION 650 Series Applications Manual

1MRK 504 158-UEN A
The following outputs can be observed on the local HMI under Measurements/Monitoring/
Servicevalues(P_Q)/CVMMXN(P_Q)
S
P
Q
PF
ILAG
ILEAD
U
I
F
The settings for this function is found under Measurements/Monitoring/Servicevalues(P_Q)/
CVMMXN(P_Q)
It can be seen that:
• When system voltage falls below
U and F on the local HMI is forced to zero
• When system current falls below
U and F on the local HMI is forced to zero
• When the value of a single signal falls below the set dead band for that specific signal, the
value shown on the local HMI is forced to zero. For example, if apparent three-phase
power falls below
13.1.4

Setting guidelines

The available setting parameters of the measurement function , CMMXU, VMMXU, CMSQI,
VMSQI, VNMMXU are depending on the actual hardware (TRM) and the logic configuration
made in PCM600.
The parameters for the Measurement functions , CMMXU, VMMXU, CMSQI, VMSQI, VNMMXU
are set via the local HMI or PCM600.
GlobalBaseSel : Selects the global base value group used by the function to define ( IBase ),
UBase ) and ( SBase ).
(
Operation : Off / On . Every function instance (, CMMXU, VMMXU, CMSQI, VMSQI, VNMMXU) can
be taken in operation (
The following general settings can be set for the Measurement function ().
PowAmpFact : Amplitude factor to scale power calculations.
PowAngComp : Angle compensation for phase shift between measured I & U.
Mode : Selection of measured current and voltage. There are 9 different ways of calculating
monitored three-phase values depending on the available VT inputs connected to the IED. See
parameter group setting table.
k : Low pass filter coefficient for power measurement, U and I.
UGenZeroDb : Minimum level of voltage in % of UBase used as indication of zero voltage (zero
point clamping). If measured value is below
Application manual
Apparent three-phase power
Active three-phase power
Reactive three-phase power
Power factor
I lagging U
I leading U
System mean voltage, calculated according to selected mode
System mean current, calculated according to selected mode
Frequency
UGenZeroDB , the shown value for S, P, Q, PF, ILAG, ILEAD,
IGenZeroDB , the shown value for S, P, Q, PF, ILAG, ILEAD,
SZeroDb the value for S on the local HMI is forced to zero.
On ) or out of operation ( Off ).
UGenZeroDb calculated S, P, Q and PF will be zero.
Section 13
Monitoring
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