Effects of Damper Windings on Unbalanced Steady-State Performance of Synchronous Generator: A Case of 500 KV EHV Java-Madura-Bali System

Abstract

The purpose of this study is to investigate the performance of three different damper winding configurations of a synchronous generator (SG) which is a source of electrical energy generation system in the 500 kV EHV Java-Madura-Bali (or Jamali) System under unbalanced steady-state condition. By the SGs simulator, induced currents of damper windings under the unbalanced steady-state system conditions are measured and analyzed. The value of the generator’s inputs is derived through unbalanced Newton-Raphson loadflow analysis on the Jamali System. It has been found that the damper windings have contributed the stability effectively output. It is clear that there were little lower power angle and oscillation in the stator currents of the SGs because the damper windings reduced the unbalanced loads.

Keywords — damper windings, synchronous generator, 500 kV EHV Jamali, unbalanced steady state, loadflow analysis