Load Impact

Load Impact identifies changes in the steady state electrical loads of a power system triggered by a voltage disturbance, such as a voltage sag or interruption.

Loads can be affected by voltage disturbances in different ways. Some loads might shut down and not automatically restart after the disturbance. Other loads might experience changes in their operational state and draw more or less power. It is even possible that the power flow reverses, for example if backup power generation is triggered by the disturbance.

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

NOTE: Load Impact identifies changes in loads that persist after the disturbance. It does not identify changes in loads during the disturbance event.

See Load Impact calculations for more details.

Prerequisites

Load Impact calculations are only available for data captured by the following monitoring device types:

ION 9000 (all firmware versions)
ION 8800 (all firmware versions)
ION 8650 (all firmware versions)
ION 7650 (all firmware versions)
ION 7550 (all firmware versions)
ION 7400 (all firmware versions)
PM8000 (all firmware versions)
ACCESS 9510 (all firmware versions)
ACCESS 9610 (all firmware versions)
9410 (all firmware versions)
9810 (all firmware versions)

The monitoring devices must be configured to record the following data:

Sag/swell and transient event data
Current and voltage waveforms, for each phase, for the voltage disturbance events.

NOTE: Load Impact calculations are done automatically by the software for any applicable alarm or incident. No special configuration is required.