Synchronism conditions for automatic reclosure
Addresses 3510 to 3519 are relevant to the check conditions before automatic reclosure of the circuit breaker.
When setting the parameters for the internal automatic reclosing function (Section
it is
decided with which automatic reclosing cycle synchronism and voltage check should be carried out.
Address 3510
Op.mode with AR
determines whether closing under asynchronous system conditions is
allowed for automatic reclosure. Set this parameter to
with T-CB close
to allow asynchronous closing; the
relay will then consider the circuit breaker closing time before determining the correct instant for the close
command. Remember that closing under asynchronous system conditions is allowed only if the circuit breaker
closing time is set correctly (see above under “Preconditions”)! If you wish to permit automatic reclosure only
under synchronous system conditions, set this address to
w/o T-CB close
.
The permissible difference between the voltages is set in address 3511
AR maxVolt.Diff
. The setting is
applied in Volts secondary. This value can be entered as a primary value when parameterising with a PC and
DIGSI. Depending on the VT connection these are phase-to-earth voltages or phase-to-phase voltages.
The permissible frequency difference between the voltages is set at address 3512
AR maxFreq.Diff
the
permissible phase angle difference at address 3513
AR maxAngleDiff
.
The further release conditions for automatic reclosing are set at addresses 3515 to 3519.
The following addresses mean:
3515
AR SYNC-CHECK
both measuring points U
sy1
and U
sy2
must be ener-
gized (
Live Volt. Thr.
, address 3503); the
synchronism conditions are checked, i.e.
AR
maxVolt.Diff
(address 3511),
AR maxFreq.Diff
(address 3512) and
AR maxAngleDiff
(address
3513). This parameter can only be altered in DIGSI at
Display Additional Settings;
3516
AR Usy1<Usy2>
the measuring point U
sy1
must be de-energized
Dead
Volt. Thr.
, address 3502), the measuring point
U
sy2
must be energized (
Live Volt. Thr.
, address
3503) ;
3517
AR Usy1>Usy2<
the measuring point U
sy1
must be energized (
Live
Volt. Thr.
, address 3503), the measuring point
U
sy2
must be de-energized (
Dead Volt. Thr.
,
address 3502);
3518
AR Usy1<Usy2<
both measuring points U
sy1
and U
sy2
must be de-ener-
gized (
Dead Volt. Thr.
, address 3502);
3519
AR OVERRIDE
automatic reclosure is released without any check.
The five possible release conditions are independent of one another and can be combined.
Synchronism conditions for manual closure and control command
Addresses 3530 to 3539 are relevant to the check conditions before manual closure and closing via control
command of the circuit breaker. When setting the general protection data (Power System Data 2, Section
it was already decided at address 1151 whether synchronism and voltage check should
be carried out before manual closing. With the following setting in address
MAN. CLOSE
=
w/o Sync-
check
, no checks are performed before manual closing.
For commands through the integrated control (local, DIGSI, serial interface), address 3509
SyncCB
deter-
mines whether synchronism checks will be performed or not. This address also informs the device to which
switching device of the control the synchronizing request refers. You can select from the switching devices
which are available for the integrated control. Choose the circuit breaker to be operated via the synchronism
check. This is usually the circuit breaker which is operated in case of manual closing or automatic reclosure. If
you set
SyncCB
=
none
here, a CLOSE command via the integrated control will be carried out without
synchronism check.
Address 3530
Op.mode with MC
determines whether closing under asynchronous system conditions is
allowed for manual closing or reclosure via control command. Set this parameter to
with T-CB close
to
Functions
2.4 Synchronism and voltage check (optional)
SIPROTEC 4, 7VK61, Manual
91
C53000-G1176-C159-5, Edition 05.2018
Содержание SIPROTEC 4 7VK61
Страница 8: ...8 SIPROTEC 4 7VK61 Manual C53000 G1176 C159 5 Edition 05 2018 ...
Страница 10: ...10 SIPROTEC 4 7VK61 Manual C53000 G1176 C159 5 Edition 05 2018 ...
Страница 16: ...16 SIPROTEC 4 7VK61 Manual C53000 G1176 C159 5 Edition 05 2018 ...
Страница 176: ...176 SIPROTEC 4 7VK61 Manual C53000 G1176 C159 5 Edition 05 2018 ...
Страница 224: ...224 SIPROTEC 4 7VK61 Manual C53000 G1176 C159 5 Edition 05 2018 ...
Страница 264: ...264 SIPROTEC 4 7VK61 Manual C53000 G1176 C159 5 Edition 05 2018 ...
Страница 270: ...270 SIPROTEC 4 7VK61 Manual C53000 G1176 C159 5 Edition 05 2018 ...
Страница 276: ...276 SIPROTEC 4 7VK61 Manual C53000 G1176 C159 5 Edition 05 2018 ...
Страница 346: ...346 SIPROTEC 4 7VK61 Manual C53000 G1176 C159 5 Edition 05 2018 ...