ABB Relion 650 Series Technical Manual page 541

1MRK 506 326-UUS B
Section 16
16.1 Binary input
16.1.1 Binary input debounce filter
The debounce filter eliminates debounces and short disturbances on a binary input.
A time counter is used for filtering. The time counter is increased once in a millisecond when a
binary input is high, or decreased when a binary input is low. A new debounced binary input signal
is forwarded when the time counter reaches the set
value is low or when the time counter reaches 0 and the debounced input value is high.
The binary input ON-event gets the time stamp of the first rising edge, after which the counter
does not reach 0 again. The same happens when the signal goes down to 0 again.
Each binary input has a filter time parameter
input of the module in question (for example
16.1.2 Oscillation filter
Binary input lines can be very long in substations and there are electromagnetic fields from, for
example, nearby breakers. Floating input lines can result in binary inputs' activity. These events are
unwanted traffic in the system. An oscillation filter is used to reduce the load from the system
when a binary input starts oscillating.
Each debounced input signal change increments an oscillation counter. Every time the oscillation
time counter reaches the set
counters are reset. If the counter value is above the set
declared as oscillating. If the value is below the set
valid again. During counting of the oscillation time the status of the signal remains unchanged,
leading to a fixed delay in the status update, even if the signal has attained normal status again.
Each binary input has an oscillation count parameter
parameter
Table 490: BIO_9BI Non group settings (basic)
Name Values (Range)
BatteryVoltage 24 - 250
Table 491: BIO_9BI Non group settings (advanced)
Name Values (Range)
Threshold1 6 - 900
DebounceTime1 0.000 - 0.100
OscillationCount1 0 - 255
Table continues on next page
Line distance protection REL650
Technical manual
Basic IED functions
OscillationTime , the oscillation counter is checked and both the
OscillationTime# , where # is the number of the binary input of the module in question.
Unit Step
V
Unit Step
%VB
s
-
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DebounceTimevalue and the debounced input
DebounceTime# , where # is the number of the binary
DebounceTime1 ).
OscillationCount value the signal is
OscillationCount value, the signal is declared as
OscillationCount# and an oscillation time
Default
1 110
Default
1 65
0.001 0.005
1 0
Basic IED functions
GUID-AE43976C-E966-484C-AF39-89B2B12F56DC v1
GUID-41B89E6F-50C3-44BF-9171-3CC82EB5CA15 v1
Description
Station battery voltage
Description
Threshold in percentage of station battery
voltage for input 1
Debounce time for input 1
Oscillation count for input 1
Section 16
PID-1900-SETTINGS v5
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