DocumentCode :
1544040
Title :
Electroluminescence measurements to detect accumulated charge at the electrode-insulator interface
Author :
Mary, D. ; Malec, D.
Author_Institution :
Univ. Paul Sabatier, Toulouse, France
Volume :
8
Issue :
5
fYear :
2001
fDate :
10/1/2001 12:00:00 AM
Firstpage :
771
Lastpage :
775
Abstract :
Electroluminescence (EL) spectrum analysis is proposed to detect charge accumulation in insulators. The objective is to find the nature of accumulated space charges at the electrode-insulator interface by using only EL measurements recorded under a moderate ac 50 Hz field. The differences between spectra obtained with virgin samples and treated samples are analyzed. Some experience obtained with 500 μm thick low-density polyethylene (LDPE) samples are described to illustrate the expected modification of the EL spectrum vs, interfacial space charges. Direct space charge measurements, using the laser induced pressure propagation (LIPP) method are used to verify our assumptions. Good agreement is found between EL analysis and experimental data of space charges
Keywords :
dielectric polarisation; electroluminescence; insulation testing; measurement by laser beam; polyethylene insulation; space charge; 50 Hz; 500 micron; accumulated space charges; electrode-insulator interface; electroluminescence measurements; interfacial space charges; laser induced pressure propagation; low-density polyethylene; Charge measurement; Current measurement; Data analysis; Electroluminescence; Insulation; Laser modes; Optical propagation; Polyethylene; Pressure measurement; Space charge;
fLanguage :
English
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
Publisher :
ieee
ISSN :
1070-9878
Type :
jour
DOI :
10.1109/94.959699
Filename :
959699
Link To Document :
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