When there is a fault, FLISR comes up with a plan to isolate the fault and restore the sections of network around the fault. If the analysis shows that the preferred plan will leave voltage and/or flow violations, FLISR will attempt to alleviate these by performing a Volt/VAr optimization. If the objective is achieved, it will add the steps found by the optimization on the Volt/VAr devices.

FLISR performs the optimization only when the Optimization module is licensed and the Optimization global status is enabled (set to either Manual or Automatic). You can also control whether FLISR performs Volt/VAr optimization by setting a configurable parameter (flisrOptimizeNetwork) in the Configuration Assistant Event Management Rules tab’s Fault Location, Isolation, and Service Restoration rules tree. The flisrOptimizeNetwork parameter's rule_value_1 is set to yes by default. You can set the rule_value_1 to 'no' if FLISR should not perform optimization.

FLISR also needs to use powerflow as its solution engine to run optimization

When optimization relieves the violations, the recommendations on Volt/VAr devices will be added to the FLISR switching sheet when generated. These recommendations are not seen on the FLISR report, but a message is added to the report saying optimization steps have been added to the plan.

When FLISR is in automatic mode and optimization global is in manual mode, the FLISR plan will be demoted to manual if optimization has added recommendations to the FLISR switching plan.