![ABB Relion RES670 Скачать руководство пользователя страница 329](http://html.mh-extra.com/html/abb/relion-res670/relion-res670_technical-manual_4485329.webp)
ANSI12000609-1-en.vsd
Comparator
If
f <= FreqHighLimit
AND
f > FreqLowLimit
Then
PICKUP
Comparator
I < PickupCurrentLevel
PICKUP
Signal Routing
Based on
Generator
Start or Stop
Detection Logic
and
Voltage Band Limit
Check Logic
V3P
I3P
CBOPEN
CBCLOSE
Comparator
If
FreqHighLimit <=
FreqLowLimit
Then
ERROR
BLOCK
LOADINIT
RESETACC
HOLDTIME
BFI_3P
ERROR
TRIPACC
TRIPCONT
STRORHLD
ACCTIME
ACCALARM
FREQOK
FREQOK
Comparator
V
01
<= VHighLimit
AND
V
01
>= VLowLimit
VOLTOK
VOLTOK
TRIP
FREQ
Accumulation time
counter
Continuous time
counter
AND
Pickup & Trip
Output Logic
FREQ
PICKUP
LASTEVTD
ANSI12000609 V1 EN-US
Figure 112:
Logical diagram
To achieve a proper operation, the set frequency high limit should be more than the set
frequency low limit. To avoid malfunction, a check is performed that
FreqHighLimit
is
greater than
FreqLowLimit
. If not, the
ERROR
signal is activated.
FTAQFVR (81A) can be instantiated with one or more frequency ranges according to
the turbine manufacturer's specification. When the frequency falls in to the common
zone when two frequency ranges overlap it is necessary to block one instance and keep
only one instance of FTAQFVR (81A) active. The
STRORHLD
output is activated
when either the
BFI_3P
output is active or when the
HOLDACC
input signal is on. The
STRORHLD
output is connected to the input
HOLDACC
of the other instance of
FTAQFVR (81A).
1MRK 511 408-UUS A
Section 10
Frequency protection
Phasor measurement unit RES670 2.2 ANSI
323
Technical manual
Содержание Relion RES670
Страница 1: ...RELION 670 SERIES Phasor measurement unit RES670 Version 2 2 ANSI Technical manual ...
Страница 2: ......
Страница 276: ...270 ...
Страница 306: ...300 ...
Страница 360: ...354 ...
Страница 406: ...400 ...
Страница 614: ...608 ...
Страница 732: ...726 ...
Страница 748: ...742 ...
Страница 884: ...878 ...
Страница 932: ...926 ...
Страница 933: ...927 ...