Development of fuzzy logic power system stabilizer and further studies

During the last several years, we have been working on the development of a fuzzy logic power system stabilizer to enhance the damping of generator oscillations as a joint research work between Kumamoto University and the Kyushu Electric Power Co. Through simulation studies and also experimental studies on a 5 kVA laboratory system, several hydro units in the Kyushu Electric Power System, and the Analog Power System Simulator at the Research Laboratory of the Kyushu Electric Power Co., the excellent control performance of the proposed fuzzy logic power system stabilizer has been demonstrated. The fuzzy logic power system stabilizer manufactured by Toshiba Co. is now in service on a 90 MVA hydro unit in the Kyushu Electric Power System. Further studies are now ongoing for the development of the integrated fuzzy logic generator controller and the fuzzy logic excitation controller.