Analog Inputs; Introduction; Setting Guidelines; Setting Of The Phase Reference Channel - ABB Relion 670 Series Applications Manual

1MRK 511 401-UEN Rev. K
Section 4
4.1

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
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.
4.2

Setting guidelines

4.2.1

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
analog channel that is used as phase angle reference.
4.2.1.1

Example

Usually the L1 phase-to-earth voltage connected to the first VT channel number of the
transformer input module (TRM) is selected as the phase reference. The first VT channel
number depends on the type of transformer input module.
For a TRM with 6 current and 6 voltage inputs the first VT channel is 7. The setting
PhaseAngleRef =7 shall be used if the phase reference voltage is connected to that channel.
Bay control REC670
Application manual

Analog inputs

PhaseAngleRef can be defined to facilitate service values reading. This
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.
The available setting parameters related to analog inputs are depending on the
actual hardware (TRM) and the logic configuration made in PCM600.
If a second TRM is used, at least one TRM channel must be configured to get
the service values. However, the MU physical channel must be configured to get
service values from that channel.
© Copyright 2017 Hitachi Power Grids. All rights reserved
Analog inputs
SEMOD55003-5 v11
SEMOD55068-1 v1
SEMOD130348-4 v5
SEMOD55055-5 v3
PhaseAngleRef defines the
SEMOD55055-11 v6
Section 4
59