Title :
A new approach to the diagnosis of solid insulation systems based on PD signal inference
Author :
Cavallini, A. ; Montanari, G.C. ; Contin, A. ; Pulletti, F.
Author_Institution :
DIE-LIMAT, Bologna Univ., Italy
Abstract :
The authors have developed digital instrumentation that can measure the amplitude, shape, phase, and number of pulses per cycle. Examples are given of results obtained from an induction motor, a hydrogenerator, a polymeric cable system with a defective joint, and a high-voltage current transformer.
Keywords :
cable jointing; current transformers; digital instrumentation; hydroelectric generators; induction motors; insulation testing; machine insulation; partial discharge measurement; power cable insulation; power cable testing; signal detection; PD pulse signals detection; PD signal inference; basic defect characteristics identification; defective cable joint; digital instrumentation; high-voltage current transformer; hydrogenerator; induction motor; noise rejection; partial discharge measurement; polymeric cable system; pulses per cycle number measurement; signal separation; solid insulation systems diagnosis; Induction motors; Instruments; Phase measurement; Polymers; Power transformer insulation; Pulse measurements; Pulse shaping methods; Pulse transformers; Shape measurement; Solids;
Journal_Title :
Electrical Insulation Magazine, IEEE
DOI :
10.1109/MEI.2003.1192033
