Title :
A discharge locating probe for rotating machines
Author :
Sedding, H.G. ; Stone, G.C.
Author_Institution :
Ontario Hydro, Toronto, Ont., Canada
Abstract :
The basic principles of an improved Tennessee Valley Authority (TVA) probe known as the discharge locating (DL) probe are presented. The principal features of the new device are very-high-frequency detection using a capacitive sensor and microprocessor-based signal processing. These features are intended to make the probe easier to use and less ambiguous in the interpretation of results. The coupling technique used permits significantly improved spatial resolution of the discharge source and immunity to radiated electrical interference. Details of the signal processing electronics and field experience are described.<>
Keywords :
discharges (electric); electric sensing devices; machine testing; probes; Tennessee Valley Authority; capacitive sensor; coupling technique; discharge locating probe; microprocessor-based signal processing; radiated electrical interference; rotating machines; spatial resolution; very-high-frequency detection; Coils; Fault location; Inspection; Partial discharges; Probes; Radio frequency; Rotating machines; Signal processing; Stator windings; Testing;
Journal_Title :
Electrical Insulation Magazine, IEEE
