Section 4 Analog Inputs; Introduction; Setting Guidelines; Setting Of The Phase Reference Channel - ABB RELION 670 SERIES Applications Manual

1MRK 506 369-UUS -
Section 4
4.1
4.2
4.2.1
Line distance protection REL670 2.2 ANSI
Application 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 availability of VT inputs depends on the ordered transformer input
module (TRM) type.

Setting guidelines

The available setting parameters related to analog inputs are depending on
the actual hardware (TRM) and the logic configuration made in PCM600.

Setting of the phase reference channel

All phase angles are calculated in relation to a defined reference. An appropriate analog
input channel is selected and used as phase reference. The parameter PhaseAngleRef
defines the analog channel that is used as phase angle reference.
Section 4
Analog inputs
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