ABB Relion 670 Series Applications Manual page 248

Section 16
Monitoring
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, V and I.
VGenZeroDb : Minimum level of voltage in % of VBase, used as indication of zero voltage (zero
point clamping). If measured value is below
IGenZeroDb : Minimum level of current in % of IBase , used as indication of zero current (zero point
clamping). If measured value is below
VMagCompY : Magnitude compensation to calibrate voltage measurements at Y% of Vn, where Y is
equal to 5, 30 or 100.
IMagCompY : Magnitude compensation to calibrate current measurements at Y% of In, where Y is
equal to 5, 30 or 100.
IAngCompY : Angle compensation to calibrate angle measurements at Y% of In, where Y is equal to
5, 30 or 100.
The following general settings can be set for the Phase current measurement (CMMXU).
IMagCompY : Magnitude compensation to calibrate current measurements at Y% of In, where Y is
equal to 5, 30 or 100.
IAngCompY : Angle compensation to calibrate angle measurements at Y% of In, where Y is equal to
5, 30 or 100.
The following general settings can be set for the Phase-phase voltage measurement (VMMXU).
VMagCompY : Amplitude compensation to calibrate voltage measurements at Y% of Vn, where Y is
equal to 5, 30 or 100.
VAngCompY : Angle compensation to calibrate angle measurements at Y% of Vn, where Y is equal
to 5, 30 or 100.
The following general settings can be set for all monitored quantities included in the functions
(CVMMXN, CMMXU, VMMXU, CMSQI, VMSQI, VNMMXU) X in setting names below equals S, P, Q, PF,
V, I, F, IA,IB,IC, VA, VB, VCVAB, VBC, VCA, I1, I2, 3I0, V1, V2 or 3V0.
Xmin : Minimum value for analog signal X set directly in applicable measuring unit. This forms the
minimum limit of the range.
Xmax : Maximum value for analog signal X. This forms the maximum limit of the range.
XZeroDb : Zero point clamping. A signal value less than XZeroDb is forced to zero.
Observe the related zero point clamping settings in Setting group N for CVMMXN (
IGenZeroDb ). If measured value is below VGenZeroDb and/or IGenZeroDb calculated S, P, Q
and
and PF will be zero and these settings will override
XRepTyp : Reporting type. Cyclic ( Cyclic ), magnitude deadband ( Dead band ), integral deadband ( Int
deadband ) or Deadband and xx se cyclic (xx: 5 sec, 30 sec, 1 min). The reporting interval is
controlled by the parameter
XDbRepInt : This setting handles all the reporting types. If setting is deadband in XRepTyp,
XDbRepInt defines the deadband in m% of the measuring range. For cyclic reporting type
242
IGenZeroDb calculated S, P, Q and PF will be zero.
XDbRepInt .
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VGenZeroDb calculated S, P, Q and PF will be zero.
XZeroDb .
1MRK 511 407-UUS Rev. J
VGenZeroDb
Phasor measurement unit RES670
Application manual