Voltage Control - ABB REC670 Applications Manual

1MRK 511 401-UEN A
14.5
14.5.1
14.5.2
Bay control REC670 2.2 IEC
Application manual
• QB9_OP = 1
• QB9_CL = 0
• QC9_OP = 1
• QC9_CL = 0
If, in this case, line voltage supervision is added, then rather than setting QB9 to
open state, specify the state of the voltage supervision:
• QB9_OP = VOLT_OFF
• QB9_CL = VOLT_ON
If there is no voltage supervision, then set the corresponding inputs as follows:
• VOLT_OFF = 1
• VOLT_ON = 0

Voltage control

Identification
Function description
Automatic voltage control for tap
changer, single control
Automatic voltage control for tap
changer, parallel control
Tap changer control and supervision, 6
binary inputs
Tap changer control and supervision,
32 binary inputs
Application
When the load in a power network is increased the voltage will decrease and vice
versa. To maintain the network voltage at a constant level, power transformers are
usually equipped with on-load tap-changer. This alters the power transformer ratio
in a number of predefined steps and in that way changes the voltage. Each step
usually represents a change in voltage of approximately 0.5-1.7%.
IEC 61850 IEC 60617
identification identification
TR1ATCC
U
IEC10000165 V1 EN-US
TR8ATCC
U
IEC10000166 V1 EN-US
TCMYLTC -
TCLYLTC -
Section 14
Control
SEMOD158732-1 v2
SEMOD173054-2 v5
ANSI/IEEE C37.2
device number
90
90
84
84
SEMOD159067-1 v2
SEMOD159053-5 v5
379