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Direct current measuring unit
ABB Network Partner AB
1MRK 580 154-XEN
Page
7 - 7
Version 1.0-00
These reporting modes are available:
• Periodic reporting
• Periodic reporting with dead-band supervision in parallel
• Periodic reporting with dead-band supervision in series
Users can select between two types of dead-band supervision:
• Amplitude dead-band supervision(ADBS)
• Integrating dead-band supervision (IDBS)
4.1 Amplitude dead-band
supervision
If the changed value—compared to the last reported value—is larger than
the ±
∆
Y predefinied limits that are set by users, and if this is detected by
a new measuring sample, then the measuring channel reports the new
value to a higher level (Fig. 2). This limits the information flow to a mini-
mum necessary.
Fig. 2
Amplitude dead-band supervision
After the new value is reported, the new +
∆
Y limits for dead-band are
automatically set around it. The new value is reported only if the meas-
ured quantity changes more than defined by the new +
∆
Y set limits.
4.2 Integrating dead-band
supervision
The value of the measured quantity is updated even if the changes do not
exceed the amplitude dead-band supervision limits. The measured value is
updated if the time integral of all changes exceeds the pre-set limits, see
Fig. 3. The shadowed areas represent the time integrals which exceed the
pre-set value of the integrating dead-band supervision.
The last value reported (Y1 in Fig. 3) serves as a basic value for further
measurement. A difference is calculated between the last reported and the
newly measured value during the new sample and is multiplied by the
1
2
3
4
5
6
Y
t
∆
Y
∆
Y
∆
Y
∆
Y
Y1
Y2
Y3
new values reported
(x80154-2)
Содержание REC 561
Страница 19: ...ABB Network Partner AB Introduction REC 561 Version 1 0 00 1MRK 580 146 XEN Page 2 14 ...
Страница 31: ...ABB Network Partner AB Requirements and basic technical data REC 561 Version 1 0 00 Page 2 26 ...
Страница 49: ...ABB Network Partner AB Page IV ...
Страница 67: ...ABB Network Partner AB Installation and commissioning Version 1 0 00 1MRK 580 166 XEN Page 3 18 ...
Страница 85: ...ABB Network Partner AB Local man machine communication Version 1 0 00 1MRK 580 156 XEN Page 3 36 ...
Страница 121: ...ABB Network Partner AB Menu tree Appendix Version 1 0 00 1MRK 580 158 XEN Page 3 72 ...
Страница 139: ...ABB Network Partner AB Terminal identification Version 1 0 00 1MRK 580 160 XEN Page 4 4 ...
Страница 143: ...ABB Network Partner AB Activation of setting group Version 1 0 00 1MRK 580 162 XEN Page 4 8 ...
Страница 175: ...ABB Network Partner AB Configurable logic Version 1 0 00 1MRK 580 161 XEN Page 4 40 ...
Страница 261: ...ABB Network Partner AB Auto reclosing Single and or three phase Version 1 0 00 1MRK 580 170 XEN Page 5 82 ...
Страница 281: ...ABB Network Partner AB Loss of power system voltage Version 1 0 00 1MRK 580 153 XEN Page 5 102 ...
Страница 385: ...ABB Network Partner AB Apparatus control Version 1 0 00 1MRK 580 150 XEN Page 6 100 ...
Страница 495: ...ABB Network Partner AB Interlocking Version 1 0 00 1MRK 580 151 XEN Page 6 210 ...
Страница 515: ...ABB Network Partner AB Event function Version 1 0 00 1MRK 580 140 XEN Page 6 230 ...
Страница 519: ...ABB Network Partner AB Page IV ...
Страница 561: ...ABB Network Partner AB Time synchronisation Version 1 0 00 1MRK 580 135 XEN Page 7 42 ...
Страница 569: ...ABB Network Partner AB Internal events Version 1 0 00 1MRK 580 134 XEN Page 7 50 ...
Страница 599: ...ABB Network Partner AB Index Version 1 0 01 1MRK 580 175 XEN Page 8 6 ...
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