Voltage Control - ABB REC670 Applications Manual

1MRK 511 401-UUS A
14.5
14.5.1
14.5.2
Bay control REC670 2.2 ANSI
Application manual
If, in this case, line voltage supervision is added, then rather than setting 989 to open
state, specify the state of the voltage supervision:
• 989_OP = VOLT_OFF
• 989_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%.
The voltage control function is intended for control of power transformers with a motor
driven on-load tap-changer. The function is designed to regulate the voltage at the
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
407