SUB-HARMONIC DETECTION AND CONTROL SYSTEM

摘要

A distribution series capacitor control system is provided with a sub-harmonic detection module (100) connected to an input signal and operable to detect the presence of at least two distinct types of sub-harmonic content in the input signal. A logical signal processor (140) is electrically connected to the sub-harmonic detection module (100), and operates to independently determine the existence of self-excitation during induction motor starting and ferroresonant phenomena based upon the at least two distinct types of sub-harmonic content, respectively. A system controller (142) is electrically connected to the logical signal processor (140) and operates to eliminate effects of self-excitation during induction motor starting and ferroresonant phenomena on the system.