Reference Manual
BLR-CX-R / BLR-CX-T
Rev. 07
2018-07
36
9.4
Transformer compensation
The compensation of a transformer can be solved with the BLR-CX in two ways:
9.4.1
Setting a reactive power offset
Setting reactive power offset. This is added to the required compensation power within the
system.
Procedure:
Determine the required capacitive reactive power to compensate the transformer. Enter the
calculated value in the menu item "312". Control will start immediately with the additional
required reactive power.
Features:
The reactive power offset set here is always added to the measured reactive power.
Therefore, it's always the Pf appears before the transformer. This means that the system can
capacitive, but the measurement of the utility the required Pf recoded.
9.4.2
Mixed measurement:
By the current measurement on the medium voltage side, the transformer caused reactive
power is measured and regulated by the connected compensation system.
Procedure:
Connect the measurement of the
controller as shown in the diagram
adjacent. Then start the automatic
initialization. The vector group ot the
transformer is automatically considered.
Connection:
When auto-initialization will be aborted,
under item 11.2, the most common
transformer vector groups are listed.
20kV / 50Hz
400V / 50Hz
BLR-CX
Last
Transformator
