Monitoring of the Function Group Selection
A particular group of parameters is provided for each synchronizing point which are designated as a function
group. Each of these function groups applies to one synchronising point and must be therefore clearly
selected. This is done via the binary inputs
>Sy1 activ
to
>Sy8 activ
. The selection uniqueness is
checked by a “1-out of-n” decision. An incorrect function group selection is signalled by the indication
Sync
FG-Error
.
Relay Monitoring
The relays R1 (BO1) and R2 (BO2) in the devices 7VE61 and 7VE63 are activated by 2 command channels and
an additional enabling channel. Open circuits and short-circuits in the relay activation are detected and indi-
cated (indiciations
Error Relay R1
or
Error Relay R2
). If this monitoring responds the synchronizing
function is blocked and reset.
Plausibility of Parameter Settings
In principle simultaneous parametrization and synchronization is not permitted. A start pulse is not accepted
during a parametrization or a current synchronisation is aborted by a reparametrization.
On plausibility errors in configuration of the synchronizing function the indication
Sync Fail.Conf.
is
issued and the synchronizing function blocked. The check is done already on startup of the device/on
arriving measured request to the synchronizing function. All switching actions which operate with the
synchronizing function are acknowledged in the error case with a negative command execution (CO-).
Further monitoring is specific to function group i.e. it monitors the parameters within a function group. In the
event of plausibility errors the indication
SyX ParErr
(with X = 1 to 8) is issued and the faulty parametrized
functional group is blocked. The following monitoring functions are carried out:
Addr.
Parameter
Description
Condition
6x05
U<
Threshold U1, U2 dead line
6x05 < 6x06 ≤ 6x03 < 6x04
6x06
U>
Threshold U1, U2 energized
6x03
Umin
Lower voltage limit: Umin
6x04
Umax
Upper voltage limit: Umax
6x30
dU ASYN U2>U1
Perm. Voltage Difference U2>U1
6x30 ≤ I 6x03–6x04 I
6x31 ≤ I 6x03–6x04 I
6x31
dU ASYN U2<U1
Perm. Voltage Difference U2<U1
6x03
Umin
Lower voltage limit: Umin
6x04
Umax
Upper voltage limit: Umax
6x42
dU SYN U2>U1
Perm. Voltage Difference U2>U1
6x42 ≤ I 6x03–6x04 I
6x43 ≤ I 6x03–6x04 I
6x43
dU SYN U2<U1
Perm. Voltage Difference U2<U1
6x03
Umin
Lower voltage limit: Umin
6x04
Umax
Upper voltage limit: Umax
6x71
T U PULS MIN
minimum position impulse for U comparison
6x71 < 6x72
6x72
T U PULS MAX
maximum position impulse for U comparison
6x81
T f PULS MIN
minimum position impulse for f comparison
6x81 < 6x82
6x82
T f PULS MAX
maximum position impulse for f comparison
6x20
T-CB close
Operating Time of the Circuit Breaker
6x20 != ∞
6x33
df ASYN f2<f1
Perm. Frequency Difference f2<f1
(-1·6x33) < 6x85 < 6x32
6x85
Δf SET POINT
Target value for the frequency balance
6x32
df ASYN f2>f1
Perm. Frequency Difference f2>f1
Malfunction Responses of the Monitoring Functions
Depending on the type of malfunction detected, an indication is sent, a restart of the processor system initi-
ated, the synchronism function is blocked and reset or the whole device is taken out of service. After three
unsuccessful restart attempts, the device is also taken out of service. The device healthy relay (live) also resets
2.12.4
Functions
2.12 Supervision
114
SIPROTEC 4, 7VE61 and 7VE63, Manual
C53000-G1176-C163-3, Edition 10.2017
Summary of Contents for SIPROTEC 4 7VE61
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