ABB REC650 ANSI, Руководство по эксплуатации продукта

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4. Control
Synchrocheck, energizing check,
and synchronizing SESRSYN
The Synchronizing function allows closing of
asynchronous networks at the correct
moment including the breaker closing time,
which improves the network stability.
Synchrocheck, energizing check, and
synchronizing (SESRSYN) function checks
that the voltages on both sides of the circuit
breaker are in synchronism, or with at least
one side dead to ensure that closing can be
done safely.
SESRSYN function includes a built-in voltage
selection scheme for double bus arrangements.
Manual closing as well as automatic reclosing
can be checked by the function and can have
different settings.
For systems which are running asynchronous
a synchronizing function is provided. The
main purpose of the synchronizing function
is to provide controlled closing of circuit
breakers when two asynchronous systems are
going to be connected. It is used for slip
frequencies that are larger than those for
synchrocheck and lower than a set maximum
level for the synchronizing function.
Autorecloser SMBRREC
The autorecloser (SMBRREC) function
provides high-speed and/or delayed auto-
reclosing for single breaker applications.
Up to five reclosing attempts can be included
by parameter setting.
The autoreclosing function can be configured
to co-operate with a synchrocheck function.
Apparatus control APC
The apparatus control functions are used for
control and supervision of circuit breakers,
disconnectors and earthing switches within a
bay. Permission to operate is given after
evaluation of conditions from other functions
such as interlocking, synchrocheck, operator
place selection and external or internal
blockings.
Apparatus control features:
• Select-Execute principle to give high
reliability
• Selection function to prevent simultaneous
operation
• Selection and supervision of operator place
• Command supervision
• Block/deblock of operation
• Block/deblock of updating of position
indications
• Substitution of position indications
• Overriding of interlocking functions
• Overriding of synchrocheck
• Operation counter
• Suppression of Mid position
Two types of command models can be used:
• Direct with normal security
• SBO (Select-Before-Operate) with enhanced
security
Direct commands are received with no prior
select command. SBO commands are
received with a select command first and on
successful selection, a proceeding operate
command.
In normal security, the command is
processed and the resulting position is not
supervised. However with enhanced security,
the command is processed and the resulting
position is supervised.
Control operation can be performed from the
local HMI under authority control if so defined.
Bay control REC650 1MRK 511 249-BEN -
Product version: 1.1 Issued: February 2011
18 ABB