Title :
Development of a capacitance measuring robot for the water-cooled stator winding of turbine generators
Author :
Tari, Makoto ; Nagano, Susumu ; Hasegawa, Hiroshi ; Tashiro, Kazuo ; Murakami, Shin ; Shimada, Hideyuki
Author_Institution :
Toshiba Corp., Yokohama, Japan
Abstract :
When water permeates the stator winding insulation in a large-scale turbine-generator, its dielectric strength drops steeply due to wet heat deterioration. A robot, which enables the measurement of water-cooled winding capacitance without removing the rotor, has been developed, confirming good results in the field and contributing to assuring generators with high reliability
Keywords :
automatic test equipment; capacitance measurement; electric breakdown; electric strength; insulation testing; machine insulation; machine testing; robots; stators; trees (electrical); turbogenerators; capacitance measuring robot; dielectric strength; reliability tests; rotor; stator winding insulation; turbine generators; water-cooled stator winding; wet heat deterioration; Capacitance measurement; Coolants; Cooling; Dielectric measurements; Dielectrics and electrical insulation; Hydrogen; Robots; Stator windings; Turbines; Water resources;
Conference_Titel :
Electric Machines and Drives Conference Record, 1997. IEEE International
Conference_Location :
Milwaukee, WI
Print_ISBN :
0-7803-3946-0
DOI :
10.1109/IEMDC.1997.604299
