Intermittently increased kilovar output

RECOMMENDATIONS HAVE BEEN MADE by the AIEE for permissible 60-cycle overvoltage operation of power capacitors. Operation at overvoltage of capacitors means an increased kilovar output proportional to the square of the voltage increase. So far, little use has been made of the economics offered by this overload capacity. The overload capacity of capacitors can be used advantageously for two temporary system requirements: (1) a short-time comparatively large kilovar increase for system stability in emergency cases; and (2) a longer-time comparatively small kilovar increase for intermittent extreme-voltage or power-factor improvement.