FIELD INSTALLATION AND MODIFICATIONS OF A 5-KV CLASS ADAPTIVE VAR COMPENSATOR

A 5-kV class Adaptive Var Compensator (AVC) was designed, installed, a nd tested at a rock crushing plant where the reactive power is rapidly varying. Several novel circuits including optical triggering Sor the switching of the solid state devices are used in the AVC. The AVC prov ides reactive power support for cyclic loads, and maintains the power factor at unity at the point of installation without introducing trans ients to the system. During the field testing of the AVC, several modi fications were made to ensure that the AVC operates accurately in a ha rsh industrial environment. The design, modifications and field test r esults of the AVC are presented in this paper.