How should the effectiveness of reactive power support be evaluated after an event?

Evaluating the effectiveness of reactive power support after an event is best accomplished by assessing changes in the voltage profile. Reactive power plays a crucial role in maintaining voltage levels within the power system, as it supports the regulation of voltage and helps to stabilize the system following disturbances.

By analyzing the voltage profiles before and after an event, operators can determine if the reactive power resources were able to respond adequately to maintain voltage levels within acceptable limits. This assessment would highlight any improvements or deficiencies in reactive power contributions and can provide insights into necessary adjustments for future events or operational strategies.

While simulation, telemetry data review, and stakeholder interviews may provide valuable information, they do not directly measure the immediate effectiveness of reactive power support in relation to voltage stability following an actual event. Hence, examining the voltage profile changes offers the most straightforward and relevant insight into the performance of reactive power support mechanisms within the system.