Title :
Statistical analysis of partial discharge data
Author :
Bélec, Mario ; Hudon, Claude ; Nguyen, Duc Ngoc
Author_Institution :
IREQ, Hydro-Quebec, Montreal, Que.
Abstract :
Recently, considerable efforts were deployed at Hydro-Quebec to retrieve all partial discharge (PD) files recorded with the PDA-H instrument over the last 25 years and which were scattered all over in plant computers. These initial raw data files have been centralized on a corporate computer, where all new measurements are now systematically saved. The statistical analysis of the first 10000 files has served as a framework for establishing five levels of discharges severity. This paper presents the results of this statistical analysis which proposes a two dimensional classification of the discharge severity. It also attempts to compare the statistical distribution of the maximum discharge apparent amplitudes with what can be found in the industry. Finally, a description is given to show how the evolution of partial discharges over the years is used in a more general diagnostic process
Keywords :
partial discharge measurement; statistical analysis; statistical distributions; Hydro-Quebec; PDA-H instrument; diagnostic process; partial discharge measurement; plant computer; statistical analysis; statistical distribution; Circuits; Fault location; Instruments; Measurement techniques; Partial discharge measurement; Partial discharges; Performance analysis; Performance evaluation; Pulse measurements; Statistical analysis;
Conference_Titel :
Electrical Insulation, 2006. Conference Record of the 2006 IEEE International Symposium on
Conference_Location :
Toronto, Ont.
Print_ISBN :
1-4244-0333-2
DOI :
10.1109/ELINSL.2006.1665272