Section 4
Analog inputs
4.1
Introduction
SEMOD55003-5 v10
Analog input channels must be configured and set properly in order to get correct
measurement results and correct protection operations. For power measuring and 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.
A reference
PhaseAngleRef can be defined to facilitate service values reading. This analog
channels phase angle will always be fixed to zero degrees and all other 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.
4.2
Setting guidelines
SEMOD55068-1 v1
SEMOD130348-4 v5
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.
4.2.1
Setting of the phase reference channel
SEMOD55055-5 v3
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.
1MRK 505 343-UEN B
Section 4
Analog inputs
59
Application manual
Содержание Relion 670 series
Страница 1: ...RELION 670 SERIES Line differential protection RED670 Version 2 1 IEC Application manual...
Страница 2: ......
Страница 40: ...34...
Страница 64: ...58...
Страница 150: ...144...
Страница 406: ...400...
Страница 472: ...466...
Страница 494: ...488...
Страница 512: ...506...
Страница 524: ...518...
Страница 604: ...598...
Страница 686: ...680...
Страница 718: ...712...
Страница 722: ...716...
Страница 758: ...752...
Страница 759: ...753...