Title :
Relations between the Medium Composition, Dielectric Properties, and Corona Current
Author :
Kucerovsky, Zden
Author_Institution :
Univ. of Western Ontario, London
Abstract :
Problems are discussed of the interaction between an inhomogeneous electric field and the species that the field produces in medium, which in the end are recognized as corona current. The work is based on the analysis of voltage-current characteristics, measured in several gas mixtures, created in a special apparatus that allowed handling and controlling the composition to 0.1 ppm. The results were verified using gas chromatographic and spectroscopic techniques. It has been determined that several medium additives, in trace concentrations, have a significant impact on the magnitude of the corona current and the electrical breakdown strength of the medium. Role of the additives in the corona medium is analyzed in terms of their chemical physics properties, and their effectiveness in breakdown suppression. For several electric field intensities and concentrations, the additives are classified according to the impact of their Milliken-Jaffe energy on corona current and breakdown.
Keywords :
chromatography; corona; electric fields; gas mixtures; Milliken-Jaffe energy; breakdown suppression; chemical physics properties; corona current; dielectric properties; electric field intensities; electrical breakdown strength; gas chromatographic techniques; gas mixtures; inhomogeneous electric field; spectroscopic techniques; trace concentrations; voltage-current characteristics; Additives; Breakdown voltage; Chemical analysis; Corona; Dielectrics; Electric breakdown; Electrons; Physics; Pollution measurement; Sulfur hexafluoride;
Conference_Titel :
Industry Applications Conference, 2007. 42nd IAS Annual Meeting. Conference Record of the 2007 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
978-1-4244-1259-4
Electronic_ISBN :
0197-2618
DOI :
10.1109/07IAS.2007.172
