Title :
Progress of insulation ageing and diagnostics of high voltage rotating machine windings in Japan
Author_Institution :
Mitsubishi Electr. Corp., Tokyo, Japan
Abstract :
Recent research into using offline and online diagnostics to study ageing of generator insulation is discussed. Preventive maintenance based on offline diagnostic methods and adequate updating of windings are reviewed. A few examples of online partial discharge measurements and sensor designs of and concepts under development by several manufacturers are presented.<>
Keywords :
ageing; insulation testing; machine insulation; machine testing; machine windings; partial discharges; Japan; electric machines; generator insulation; high voltage; offline diagnostic methods; online partial discharge measurements; rotating machine windings; sensor designs; Aging; Breakdown voltage; Dielectrics and electrical insulation; Machine windings; Partial discharges; Power generation; Preventive maintenance; Rotating machines; Stator windings; Testing;
Journal_Title :
Electrical Insulation Magazine, IEEE
