Application - ABB REB670 Applications Manual

1MRK 505 337-UUS -
18.12.1
18.12.2
18.13
18.13.1
18.13.2
Application manual

Application

The Signal matrix for binary outputs function SMBO is used within the Application
Configuration tool in direct relation with the Signal Matrix tool. SMBO represents the
way binary outputs are sent from one IED configuration.
Setting guidelines
There are no setting parameters for the Signal matrix for binary outputs SMBO available
to the user in Parameter Setting tool. However, the user must give a name to SMBO
instance and SMBO outputs, directly in the Application Configuration tool. These names
will define SMBO function in the Signal Matrix tool.
Signal matrix for analog inputs SMAI
Application
Signal matrix for analog inputs (SMAI), also known as the preprocessor function block,
analyses the connected four analog signals (three phases and neutral) and calculates all
relevant information from them like the phasor magnitude, phase angle, frequency, true
RMS value, harmonics, sequence components and so on. This information is then used by
the respective functions connected to this SMAI block in ACT (for example protection,
measurement or monitoring functions).
Frequency values
The SMAI function includes a functionality based on the level of positive sequence
voltage, MinValFreqMeas, to validate if the frequency measurement is valid or not. If the
positive sequence voltage is lower than MinValFreqMeas, the function freezes the
frequency output value for 500 ms and after that the frequency output is set to the nominal
value. A signal is available for the SMAI function to prevent operation due to non-valid
frequency values. MinValFreqMeas is set as % of VBase/√3
If SMAI setting ConnectionType is Ph-Ph, at least two of the inputs GRPx_A, GRPx_B
and GRPx_C, where 1≤x≤12, must be connected in order to calculate the positive
sequence voltage. Note that phase to phase inputs shall always be connected as follows:
A-B to GRPxA, B-C to GRPxB, C-A to GRPxC. If SMAI setting ConnectionType is Ph-
N, all three inputs GRPx_A, GRPx_B and GRPx_C must be connected in order to
calculate the positive sequence voltage.
Section 18
Basic IED functions
469