Auto-Reclosing Mode Selection; Start Auto-Reclosing And Conditions For Start Of A Reclosing Cycle - ABB Relion 670 Series Technical Reference Manual

Section 11
Control
11.1.2.3
11.1.2.4
310
When the function is set On and is operative the output SETON is activated (high).
Other input conditions such as CBPOS and CBREADY must also be fulfilled. At
this point the automatic recloser is prepared to start the reclosing cycle and the
output signal READY on the SMBRREC function block is activated (high).

Auto-reclosing mode selection

The Auto-reclosing mode is selected with setting ARMode = 3phase(0), 1/2/3ph(1),
1/2ph(2), 1ph+1*2ph(3), 1/2ph+1*3ph(4), 1ph+1*2/3ph(5). The selected mode
can be read as integer as per above list on output MODE.
As an alternative to setting the mode can be selected by connecting an integer, for
example from function block B16I to input MODEINT.
Following integers shall be used: 1=3phase, 2=1/2/3ph, 3=1/2ph, 4=1ph+1*2ph,
5=1/2ph+1*3ph or 6=1ph+1*2/3ph.
When INTZERO from Fixed signal function block is connected to the input
MODEINT the parameter setting selected will be valid.

Start auto-reclosing and conditions for start of a reclosing cycle

The usual way in which to start a reclosing cycle, or sequence, is to start it when a
line protection tripping has occurred, by applying a signal to the START input. It
should be necessary to adjust three-phase auto-reclosing open time, (dead time) for
different power system configurations or during tripping at different protection
stages, the input STARTHS (start high-speed reclosing) can also be used.
For a new auto-reclosing cycle to be started, a number of conditions need to be
met. They are linked to dedicated inputs. The inputs are:
• CBREADY: CB ready for a reclosing cycle, for example, charged operating gear
• CBPOS: to ensure that the CB was closed when the line fault occurred and
start was applied
• No blocking or inhibit signal shall be present.
After the start has been accepted, it is latched in and an internal signal "Started" is
set. It can be interrupted by certain events, like an inhibit signal.
To start auto-reclosing by CB position Open instead of from protection trip signals,
one has to configure the CB Open position signal to inputs CBPOS and START
and set a parameter StartByCBOpen = On and CBAuxContType = NormClosed
(normally closed). One also has to configure and connect signals from manual trip
commands to input INHIBIT.
The logic for switching the auto-recloser On/Off and the starting of the reclosing is
shown in figure 154. The following should be considered:
1MRK 505 208-UEN B
Technical reference manual