ABB ret650 Commissioning Manual page 74

Section 6
Testing functionality
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66
Signal Monitoring in PCM600 shows the same signals that are available on the
local HMI.
Values of the logical signals for TR8ATCC are available on the local HMI under
Main menu/Tests/Function status/Control/TR8ATCC(90)/X:TR8ATCC. The
Signal Monitoring in PCM600 shows the same signals that are available on the
local HMI.
The automatic voltage control for tap changer, parallel control TR8ATCC, if
installed, may be set to operate in Master Follower (MF) mode, or Minimise
Circulating Current (CC) mode. The commissioning tests for each parallel control
mode are addressed separately in the following procedure.
Secondary injection of load current (I
quantities is required during installation and commissioning tests. The test consists
mainly of:
1. Increasing or decreasing the injected voltage or current at the analogue inputs
of the IED.
2. Checking that the corresponding commands (Lower or Raise) are issued by the
voltage control function.
Setting confirmation is an important step for voltage control in the installation and
commissioning phase to ensure consistency of power systems base quantities, alarm/
blocking conditions and parallel control settings for each transformer control
function.
Before starting any test, verify the following settings in PCM600 or the local HMI
for TR8ATCC and TCMYLTC.
• Confirm power system base quantities IBase (for winding 1, which is defined
in a global base function, selected with setting GlobalBaseSel1 for
TR8ATCC), IBase (for winding 2, which is defined in a global base function,
selected with setting GlobalBaseSel2 for TR8ATCC), UBase.
Main menu/Settings/IED Settings/Control/TR8ATCC (90)/TR8ATCC/General
and
Main menu/Settings/IED Settings/Control/TCMYLTC (84)
• Confirm that the setting for short circuit impedance Xr2 for TR8ATCC is in
accordance with transformer data:
• Short circuit impedance, available on the local HMI under Main menu/
Settings/IED Settings/Control/TR8ATCC (90)/1:TR8ATCC/General/
Xr2.
• Confirm that the setting for TCMYLTC is in accordance with transformer data:
) and secondary bus voltage (UB) equivalent
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1MRK 504 126-UEN -
Commissioning Manual