Functionality - ABB RES670 Technical Manual

Relion 670 series, phasor measurement unit

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Functionality

Power system measurement (CVMMXN) can be used to measure active as well as

reactive power values. Function for energy calculation and demand handling

(ETPMMTR) uses measured active and reactive power as input and calculates the

accumulated active and reactive energy pulses, in forward and reverse direction.

Energy values can be read or generated as pulses. Maximum demand power values are

also calculated by the function. This function includes zero point clamping to remove

noise from the input signal. As output of this function: periodic energy calculations,

integration of energy values, calculation of energy pulses, alarm signals for limit

violation of energy values and maximum power demand, can be found.

The values of active and reactive energies are calculated from the input power values

by integrating them over a selected time tEnergy. The integration of active and reactive

energy values will happen in both forward and reverse directions. These energy values

are available as output signals and also as pulse outputs. Integration of energy values

can be controlled by inputs (STARTACC and STOPACC) and EnaAcc setting and it can

be reset to initial values with RSTACC input.

The maximum demand for active and reactive powers are calculated for the set time

interval tEnergy and these values are updated every minute through output channels.

The active and reactive maximum power demand values are calculated for both

forward and reverse direction and these values can be reset with RSTDMD input.

Function block

IEC14000019-1-en.vsd

IEC14000019 V1 EN-US

ETPMMTR function block

1MRK 511 408-UUS A

GUID-6898E29B-DA70-421C-837C-1BBED8C63A7A v3

Phasor measurement unit RES670 2.2 ANSI

Technical manual

SEMOD175502-4 v5

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