Title :
Partial discharge. XIII. Acoustic partial discharge detection-fundamental considerations
Author_Institution :
Norwegian Electr. Power Res. Inst., Trondheim, Norway
Abstract :
An overview of the basic acoustics theory required to understand the finer points of acoustic partial discharge (PD) detection systems is given. PD and acoustic test methods are discussed, and acoustic wave motion, impedance, and intensity are described. Wave propagation and signal absorption, and the velocity of sound are discussed. Acoustic characteristics of media gases, liquids, and solid materials are described.<>
Keywords :
acoustic emission testing; acoustic impedance; acoustic intensity; partial discharges; NDE; acoustic partial discharge detection; acoustic test methods; acoustic wave motion; gases; impedance; intensity; liquids; signal absorption; solid materials; velocity of sound; Absorption; Acoustic propagation; Acoustic signal detection; Acoustic testing; Acoustic waves; Gases; Impedance; Liquids; Partial discharges; Solids;
Journal_Title :
Electrical Insulation Magazine, IEEE
