Section 10
Control
10.1
Synchronism check, energizing check, and
synchronizing SESRSYN (25)
10.1.1
Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Synchrocheck, energizing check, and
synchronizing
SESRSYN
sc/vc
SYMBOL-M V1 EN
25
10.1.2
Application
10.1.2.1
Synchronizing
To allow closing of breakers between asynchronous networks a synchronizing function is
provided. The breaker close command is issued at the optimum time when conditions
across the breaker are satisfied in order to avoid stress on the network and its components.
The systems are defined to be asynchronous when the frequency difference between bus
and line is larger than an adjustable parameter. If the frequency difference is less than this
threshold value the system is defined to have a parallel circuit and the synchronism check
function is used.
The synchronizing function measures the difference between the V-Line and the V-Bus.
It operates and enables a closing command to the circuit breaker when the calculated
closing angle is equal to the measured phase angle and the following conditions are
simultaneously fulfilled:
1MRK 511 286-UUS A
Section 10
Control
183
Application manual
Summary of Contents for REC650 ANSI
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