ABB Relion REC670 - Interaction between Modules

The solution in Figure 108 can also be realized over the station bus according to the
application example in Figure 109. The solutions in Figure 108 and Figure 109 do not have the
same high security compared to the solution in Figure 107, but instead have a higher
availability, since no acknowledgment is required.
SCSWI
SELECTED
RES_EXT
IED
IED
OR
Other SCWI in
the bay
Station bus
. . .
SPGAPC
IN
RESGRANT
IntlReceive
.
.
.
.
.
.
RESGRANT
IntlReceive
IEC05000178-3-en.vsd
IEC05000178 V3 EN-US
Figure 109: Application principle for an alternative reservation solution
13.3.2 Interaction between modules
M16626-3 v7
A typical bay with apparatus control function consists of a combination of logical nodes or
functions that are described here:
• The Switch controller (SCSWI) initializes all operations for one apparatus. It is the
command interface of the apparatus. It includes the position reporting as well as the
control of the position
• The Circuit breaker (SXCBR) is the process interface to the circuit breaker for the
apparatus control function.
• The Circuit switch (SXSWI) is the process interface to the disconnector or the earthing
switch for the apparatus control function.
• The Bay control (QCBAY) fulfils the bay-level functions for the apparatuses, such as
operator place selection and blockings for the complete bay.
• The Reservation (QCRSV) deals with the reservation function.
• The Protection trip logic (SMPPTRC) connects the "trip" outputs of one or more protection
functions to a common "trip" to be transmitted to SXCBR.
• The Autorecloser (SMBRREC) consists of the facilities to automatically close a tripped
breaker with respect to a number of configurable conditions.
• The logical node Interlocking (SCILO) provides the information to SCSWI whether it is
permitted to operate due to the switchyard topology. The interlocking conditions are
evaluated with separate logic and connected to SCILO .
• The Synchrocheck, energizing check, and synchronizing (SESRSYN) calculates and
compares the voltage phasor difference from both sides of an open breaker with
predefined switching conditions (synchrocheck). Also the case that one side is dead
(energizing-check) is included.
• The Generic Automatic Process Control function, GAPC, handles generic commands from
the operator to the system.
The overview of the interaction between these functions is shown in Figure
110 below.
1MRK 511 358-UEN A Section 13
Control
263
Application manual