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Figure 3. Protection function overview of preconfiguration B
5. Control
The IED incorporates local and remote
control functions. The IED offers a number of
freely assignable binary inputs/outputs and
logic circuits for establishing bay control and
interlocking functions for circuit breakers and
motor operated switch-disconnectors. The
IED supports both single and double busbar
substation busbar layouts. The number of
controllable primary apparatuses depends on
the number of available inputs and outputs in
the selected configuration. Besides
conventional hardwired signaling also
GOOSE messaging according to IEC
61850-8-1 can be used for signal interchange
between IEDs to obtain required interlockings.
Further, the IED incorporates a synchro-
check function to ensure that the voltage,
phase angle and frequency on either side of
an open circuit breaker satisfy the conditions
for safe interconnection of two networks.
6. Voltage regulator
The voltage regulator function (on-load tap
changer controller) is designed for regulating
the voltage of power transformers with on-
load tap changers in distribution substations.
The voltage regulation function provides a
manual or automatic voltage control of the
Transformer Protection and Control
1MRS756978 D
RET630
Product version: 1.1
Issued: 2011-05-18
ABB
11
Содержание Relion 630 Series RET630
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