Section 3 Analog Inputs; Introduction; Function Block - ABB RES670 Technical Manual

1MRK 511 408-UUS A
Section 3
3.1
3.2
Phasor measurement unit RES670 2.2 ANSI
Technical manual
Analog inputs

Introduction

Analog input channels must be configured and set properly in order to get correct
measurement results and correct protection operations. For power measuring, all
directional and differential functions, the directions of the input currents must be
defined in order to reflect the way the current transformers are installed/connected in
the field ( primary and secondary connections ). Measuring and protection algorithms
in the IED use primary system quantities. Setting values are in primary quantities as
well and it is important to set the data about the connected current and voltage
transformers properly.
An AISVBAS reference PhaseAngleRef can be defined to facilitate service values
reading. This analog channel's phase angle will always be fixed to zero degrees and
remaining analog channel's phase angle information will be shown in relation to this
analog input. During testing and commissioning of the IED, the reference channel can
be changed to facilitate testing and service values reading.
The IED has the ability to receive analog values from primary
equipment, that are sampled by Merging units (MU) connected to a
process bus, via the IEC 61850-9-2 LE protocol.
The availability of VT inputs depends on the ordered transformer input
module (TRM) type.

Function block

The hardware channels appear in the signal matrix tool (SMT) and in
ACT when a TRM is included in the configuration with the hardware
configuration tool. In the SMT or the ACT, they can be mapped to the
Section 3
Analog inputs
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