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This menu allows to monitor the filter load and to get an idea of its operating point
compared to the nominal rating of the filter. In addition, logged warnings and faults can be
retrieved for troubleshooting the filter operation and any abnormal network conditions.
Where applicable the different units in a filter system can be selected to get more detailed
information on parameters of the individual unit.
The PQF monitoring menu can also be used to check the status of individual units of a
multi-filter system. If required, errors in individual units can be reset.
The items of the 'PQF Monitoring' menu are discussed next.
7.8.1
The 'Status of units' menu [/Welcome/PQF monitoring/Status of units]
This menu shows for each unit of a filter system its status and allows resetting the 'fault'
status of individual units.
Three possible status indications exist:
·
Ready: The unit considered does not have a fault and can run normally.
·
Ack. Fault: The unit considered has been stopped due to an error. By pressing
Ack. Fault, the reason for the fault will be displayed and an attempt will be made
to clear the fault. When doing this, the complete filter system will be shut down.
If the fault could be cleared, the unit status will become 'Ready'. If the fault
could not be cleared, the unit status will remain 'Ack. Fault'. In the fault clearing
process, the complete filter system will be shut down. The filter can be restarted
after the fault clearing process has ended.
·
Not present: The unit considered has been excluded of the normal filter
operation due to either:
o
o
7.8.2
The 'Filter load' menu [/Welcome/PQF monitoring/Filter load]
The filter load menu shows bar graphs expressed in % indicating the filter load with
respect to the nominal rating of the following parameters:
· Inverter DC bus voltage: 'Udc' graph
· Peak current of the IGBT-modules: 'Ipeak' graph
· RMS current of the IGBT-modules: 'Irms' graph
· IGBT-temperature: 'Temp' graph
For multi-unit filters, this data can be obtained for each individual unit.
7.8.3
The 'Event logging' menu [/Welcome/PQF monitoring/Event logging]
The 'event logging' window stores the events that are recorded by the filter controllers.
The event buffer stores the 200 most recent events.
event window.
The unit is physically not present
The unit is physically present but the control board power is not present
Manual Power Quality Filter PQFS ç The PQF-Manager user interface 103
Figure 74
gives an example of the
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Troubleshooting
