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정성계,Sung Kae Chung 대한전기학회 1965 전기의 세계 Vol.14 No.2
It is expected that the impurities contained in a solid state insulation material will affect a considerable influence on its break-down voltage, dielectric loss, and insulation resistance. In this thesis, as a preliminary experimental research for the investigation described above, the effect of metalic barrier between the electrodes on the creepin flash over discharge voltage along the surface of a solid insulation material has been investigated, and got some interesting results. It was found that generaly the flash over voltage rises when a metalic barrier is located between the electrodes. The results of this investigation will be taken into account as an important components on the insulation design to prevent the creeping flash over discharge in insulators, bushings, and so on.
정성계(Sung Kae Chung) 대한전기학회 1965 전기의 세계 Vol.14 No.1
It is expected that the impurities contained in a solid state insulation material will affect a considerable influence on its break-down voltage, dielectric loss, and insulation resistance. In this thesis, as a preliminary experimental research for the investigation described above, the effect of metalic barrier between the electrodes on the creepin flash over discharge voltage along the surface of a solid insulation material has been investigated, and got some interesting results. It was found that generaly the flash over voltage rises when a metalic barrier is located between the electrodes. The results of this investigation will be taken into account as an important components on the insulation design to prevent the creeping flash over discharge in insulators, bushings, and so on.
정성계(Sung Kae Chung),이계호(Kae Ho Lee),김원섭(Won Sob Kim) 대한전기학회 1969 전기의 세계 Vol.18 No.2
This paper shows experimentally the characteristics of raising up the flashover voltage in supension insulators or bushing according to the theoretical results which was gotten by previous study. It was shown theoretically that, if some conducting metallic barriers are inserted into the flashover discharge path, the flashover voltage is found to be increased considerably. In order to verify this theoretical results, some basic experimental study was done, and the results was found to be more or less satisfactory except some problems which must be considered in future study.
정성계(Sung Kae Chung) 대한전기학회 1968 전기의 세계 Vol.17 No.3
When a insulator plate is inserted to the discharge path of a space discharge gap in which the field strength is not uniform, the spark voltage under the atmospheric pressure between the electrodes decreases or rises according to the position of the insulating plate. Also it is reported that if a metallic barrier plate is inserted to the discharge path of the same space discharge gap, similar variations of spark voltage are found. Speaking briefly, mensioned above are the spark voltage characteristics when an insulator or metallic barrier is inserted to the space discharge gap. Also some experimental results, concerning to the surface creepage flash over characteristics at the case when an insulator barrier is inserted to the discharge path of a surface creepage discharge gap, were reported by Peek. But up to now there are no reports on surface flash over voltage characteristics at the case when a metallic barrier is inserted to the surface creepage gap. In this study the effects of a conducting metallic barrier inserted to the path of a surface creepage discharge gap on the flash over voltage characteristics are investigated theoretically and experimentally, and got some important results, clearing the effects of the position and width of a conducting barrier is inserted, the surface flash over voltage characteristics appear as an Inverse N or W Characteristics. Such theoretical or experimental results may have some relation not only with the effects of dry belt and snow on suspension insulators, but also with the effects of dirty zone or water drops on the surface creepage flash over voltage.
정성계(Sung Kae Chung) 대한전기학회 1969 전기의 세계 Vol.18 No.1
This paper shows theoretically the possibility of raising up the flash over voltage in suspension insulators or bushing according to the results which was gotten by previous study done by the Author. If some conducting metallic barriers are inserted into the flash over discharge path, the flash over voltage is forund to be increased condiferablly. Applying this priciple, some methods of improving flash over characteristics are discussed theoretically.
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정성계(Sung Kae Chung) 대한전기학회 1970 전기의 세계 Vol.19 No.2
According to the previous studies which was done by the author, the flashover voltage was found to be increased considerably if some metallic barriere are inserted into the flashover discharge path. This paper shows that the flashover voltage in suspension insulators and bushings is raised up by the application of metallic barrier effect on surface discharge. Using moderate metallic barrier configulation the flash over voltage can be raised up by the amount of about 15% compared to that of the convensional type of suspension insulatiors and bushings.
Corona pulse 검출에 의한 전력기기절연진단에 대한-고찰
성영권(Yung Kwon Sung),정성계(Sung Kae Chung),김왕곤(Wang Kwun Kim) 대한전기학회 1967 전기의 세계 Vol.16 No.5
This paper shows the analysis for mechanisms of corona pulse caused by dielectric breakdown, and for the results of observed values on an actual machines with the this corona pulse technique. Although the above results are not directly related with the generation, numbers or wave of the corona pulse, it may possibly be chanced a judgement of dielectric breakdown and one of better synthetic judgement methods for actual electrical machines.