{"title":"Corona stabilization at negative impulse stress in SF/sub 6/ and SF/sub 6/-N/sub 2/-mixtures","authors":"W. Pfeiffer, H. Welke, V. Zimmer","doi":"10.1109/CEIDP.1989.69526","DOIUrl":null,"url":null,"abstract":"Measurements have been made to evaluate the characteristics of impulse corona at negative impulse stress. It is shown that for the parameters investigated the corona onset voltage is a linear function of the degree of homogeneity of the electrode arrangement for different pressures and mixture ratios. It is also shown that the corona onset voltage is a linear function of the pressure for different gap distances and mixture ratios for the parameters investigated. The breakdown voltage at impulse stress has been measured for a constant formative time lag, for different gap distances, for various degrees of homogeneity ( eta =E/sub mean//E/sub max/ was varied from 0.76 to 0.04), and for different SF/sub 6/-N/sub 2/ mixtures. Measurements of the breakdown voltage have shown that the corona stabilizing effect exists up to a mixture ratio of 10% SF/sub 6/ to N/sub 2/. It has been found that a slightly inhomogeneous electrode arrangement ( eta =0.26) has a lower dielectric strength than a strongly inhomogeneous electrode arrangement ( eta =0.04).<<ETX>>","PeriodicalId":10719,"journal":{"name":"Conference on Electrical Insulation and Dielectric Phenomena,","volume":"8 1","pages":"75-80"},"PeriodicalIF":0.0000,"publicationDate":"1989-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Conference on Electrical Insulation and Dielectric Phenomena,","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CEIDP.1989.69526","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Measurements have been made to evaluate the characteristics of impulse corona at negative impulse stress. It is shown that for the parameters investigated the corona onset voltage is a linear function of the degree of homogeneity of the electrode arrangement for different pressures and mixture ratios. It is also shown that the corona onset voltage is a linear function of the pressure for different gap distances and mixture ratios for the parameters investigated. The breakdown voltage at impulse stress has been measured for a constant formative time lag, for different gap distances, for various degrees of homogeneity ( eta =E/sub mean//E/sub max/ was varied from 0.76 to 0.04), and for different SF/sub 6/-N/sub 2/ mixtures. Measurements of the breakdown voltage have shown that the corona stabilizing effect exists up to a mixture ratio of 10% SF/sub 6/ to N/sub 2/. It has been found that a slightly inhomogeneous electrode arrangement ( eta =0.26) has a lower dielectric strength than a strongly inhomogeneous electrode arrangement ( eta =0.04).<>