Section 14 Control
14.1 Synchronism check, energizing check, and synchronizing
SESRSYN (25)
IP14558-1 v4
14.1.1 Identification
M14889-1 v4
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Synchrocheck, energizing check, and
synchronizing
SESRSYN
SYMBOL-M V1 EN-US
25
14.1.2 Functionality
M12480-3 v15
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 (25) 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 (25) function includes a built-in voltage selection scheme for double bus and breaker-
and-a-half or ring busbar 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. The synchronizing function evaluates voltage
difference, phase angle difference, slip frequency and frequency rate of change before issuing a
controlled closing of the circuit breaker. Breaker closing time is a parameter setting.
However this function can not be used to automatically synchronize the generator to the network.
1MRK 502 066-UUS B Section 14
Control
747
Technical manual
To Next Page
Loading...
