Abstract
Super-GM and the Kansai Electric Power Co., Inc., demonstrated a field test of a 70MW class superconducting generator. The model machine, which was operated as a rotary condenser, was connected to a 77kV commercial power grid through 77/6.6kV transformers. It supplied leading 40MVar to the electric power system. The model machine showed an ability to operate stably through all the tests to the various load changes in the service electric power system. The results show that a superconducting generator has effects on voltage stabilization because of small synchronous reactance of the generator and also on the increase of leading reactive capacity compared with a conventional generator.
