Title :
Partial discharge fault location and diagnosis on HV power cables
Author :
Gross, Detlev W. ; Herbig, J.G.
Author_Institution :
Power Diagnostix, Aachen, Germany
Abstract :
Risk assessment with a large population of service-aged distribution class cables demands field-applicable partial discharge measurement techniques. Recent experience with lightweight portable instruments applied with resonant test sets as well as with O.1 Hz high voltage sources is presented. Application of correlation functions to compensate the influence of high frequency properties of power cables, such as attenuation or dispersion, are used to improve location accuracy. Additionally, characteristics of phase-resolved partial discharge patterns to assess cause and potential risk of the discharge activity are discussed, Furthermore, methods and application of hand-held instruments to fine-locate the site of discharge activity are presented
Keywords :
fault diagnosis; fault location; insulation testing; partial discharge measurement; portable instruments; power cable insulation; power cable testing; 0.1 Hz; HV power cable insulation; attenuation; correlation function; dispersion; fault diagnosis; fault location; field ageing; high frequency properties; partial discharge measurement; phase-resolved pattern; portable instrument; resonant test; risk assessment; Fault diagnosis; Fault location; Instruments; Partial discharge measurement; Partial discharges; Power cables; Resonance; Risk management; Testing; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2000 Annual Report Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-6413-9
DOI :
10.1109/CEIDP.2000.884038
