Circuit Breaker Operation Monitoring And Operation Counter; Circuit Breaker Operation Monitoring And Operation; Counter; Operation Counter - ABB COM600 series User's & Technical Manual

5.1 substation analytics

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1MRS758734

5.5.

5.5.1.

5.5.2.

COM600 series 5.1

Substation Analytics Technical Manual

Circuit breaker operation monitoring and operation counter

The purpose of the circuit breaker operation monitoring subfunction is to indicate if the

circuit breaker has not been operated for a long time.

The operation of the circuit breaker operation monitoring can be described with a module

diagram. All the modules in the diagram are explained in the next sections.

Figure 5.5.1-1 Functional module diagram for calculating inactive days and alarm for circuit

breaker operation monitoring

Inactivity timer

The module calculates the number of days the circuit breaker has remained inactive, that

is, has stayed in the same open or closed state. The calculation is done by monitoring

the states of the POSOPEN and POSCLOSE auxiliary contacts.

The inactive days INA_DAYS is available in the Real time Data base.

Alarm limit check

When the inactive days exceed the limit value defined with the Inactive Alm days setting,

the MON_ALM alarm is initiated. The time in hours at which this alarm is activated can

be set with the Inactive Alm hours parameter as coordinates of UTC. The alarm signal

MON_ALM can be blocked by activating the binary input BLOCK.

The operation counter subfunction calculates the number of breaker operation cycles.

The opening and closing operations are both included in one operation cycle. The oper-

ation counter value is updated after each opening operation.

functional_module_diagram_for_calculating_inactive_days.png

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