Viewing Load Impact

View Load Impact to identify changes in steady state electrical loads in your power system triggered by a voltage disturbance.

NOTE: Load Impact analysis is only available for alarm instances and incidents, not for alarm status. Also, the data associated with the alarm or incident must meet the prerequisites. See Load Impact for more information.

To view Load Impact:

1. In the alarm viewer, open an existing alarm history or incident history view from the View Library or add a new View.

   TIP: Add a Load Impact filter to your view to identify load impact relevant alarms and incidents. You can add this filter in View Settings > Categories > Power Quality.

   NOTE: The Load Impact filter settings only apply to the following Power Quality alarm or incident types: Interruption, Under Voltage, Over Voltage, Sag, Swell, Unclassified Disturbance, Transient.

2. Find the alarm instance or Incident for which you want to view Load Impact, and click Open Details to open the details window.

   TIP: Alarms or incidents with Load Impact calculations are tagged with a Load Loss (load value less than 0) or Load Gain (load value greater than 0) label. You can enable or disable the display of the label in Web Applications > Settings > Alarms > Alarm Views.

3. In the details window, view the Load Impact information related to this alarm or incident.

   TIP: See Load Impact calculations for more details.

For information on how to configure Alarms, see Alarms configuration.

Load Impact for Recent Alarms

Load Impact will be enabled if the recent Alarm card Type field matches one of the following categories:

ALM_INTERRUPTION_VOLTAGE	Interruption
ALM_UNDER_VOLTAGE	Under Voltage
ALM_OVER_VOLTAGE	Over Voltage
ALM_SAG_VOLTAGE	Sag (Current)
ALM_SWELL_VOLTAGE	Swell (Voltage)
ALM_SAG_SWELL_VOLTAGE	Sag/Swell (Voltage)
ALM_TRANSIENT_VOLTAGE	Transient
ALM_UNCLASSIFIED_PQ	Unclassified Disturbance

Load Impact for Recent Incidents

Load Impact will be enabled if the recent Incident card Type field matches one of the following categories:

IN_INTERRUPTION	Interruption
IN_UNDER_VOLTAGE	Under Voltage
IN_OVER_VOLTAGE	Over Voltage
IN_SAG	Sag
IN_SWELL	Swell
IN_SAG_SWELL	Sag/Swell
IN_UNCLASSIFIED_PQ	Unclassified Disturbance
IN_TRANSIENT	Transient

Enable and disable Load Impact Display

To view and configure Load Impact Display settings, do the following:

1. In WebHMI, click SETTINGS.

2. In the Settings Library, click Alarms > Alarm Views.

3. In the Load Impact Display section, select or clear the check boxes.

4. Click Save to apply the changed settings.