Flashover Characteristics of Vapor-Mist Dielectrics under Lightning Impulse and Factors to Increase the Flashover Voltage

Masafumi Yashima; Hideo Fujinami; Tadasu Takuma

doi:10.1541/ieejfms1990.112.11_905

Masafumi Yashima, Hideo Fujinami, Tadasu Takuma

Author information

JOURNAL FREE ACCESS

1992 Volume 112 Issue 11 Pages 905-912

DOI https://doi.org/10.1541/ieejfms1990.112.11_905

Details

Published: November 20, 1992 Received: February 24, 1992 Available on J-STAGE: July 15, 2008 Accepted: - Advance online publication: - Revised: -
Correction information
Date of correction: July 15, 2008 Reason for correction: - Correction: DTRECEIVED Details: Wrong : 19910826
Right : 19920224

Date of correction: July 15, 2008 Reason for correction: - Correction: ABSTRACT Details: Wrong : It has been reported that the flashover voltage of gaseous dielectrics may greatly increase when they are mixed with carbon-halide mist. However, the factors which bring about the increase of the flashover voltage are not fully clarified yet. Based on our study on the basic flashover characteristics of vapor-mist dielectrics, we have suggested the scarcity of initial electrons as the predominant factor.
In the present work, we have furthermore investigated the effect of ultraviolet light irradiation, flashover characteristics under forced supply of initial electrons and for lightning impulse superimposed on DC voltage. These results have verified that the scarcity of initial electrons is the
decisive factor of increasing the lightning impulse flashover voltage of vapor-mist dielectrics. We have also made clear that the scarcity is principally attributed to: (1) the reduction of effective period (lifetime) of initial electrons, (2)the suppression of photoelectric emission from electrodes.
Right : It has been reported that the flashover voltage of gaseous dielectrics may greatly increase when they are mixed with carbon-halide mist. However, the factors which bring about the increase of the flashover voltage are not fully clarified yet. Based on our study on the basic flashover characteristics of vapor-mist dielectrics, we have suggested the scarcity of initial electrons as the predominant factor.
In the present work, we have furthermore investigated the effect of ultraviolet light irradiation, flashover characteristics under forced supply of initial electrons and for lightning impulse superimposed on DC voltage. These results have verified that the scarcity of initial electrons is the decisive factor of increasing the lightning impulse flashover voltage of vapor-mist dielectrics. We have also made clear that the scarcity is principally attributed to: (1) the reduction of effective period (lifetime) of initial electrons, (2)the suppression of photoelectric emission from electrodes.

Date of correction: July 15, 2008 Reason for correction: - Correction: DTPUB Details: Wrong : 19921115
Right : 19921120

Date of correction: July 15, 2008 Reason for correction: - Correction: PDF FILE Details: -

Abstract

It has been reported that the flashover voltage of gaseous dielectrics may greatly increase when they are mixed with carbon-halide mist. However, the factors which bring about the increase of the flashover voltage are not fully clarified yet. Based on our study on the basic flashover characteristics of vapor-mist dielectrics, we have suggested the scarcity of initial electrons as the predominant factor.
In the present work, we have furthermore investigated the effect of ultraviolet light irradiation, flashover characteristics under forced supply of initial electrons and for lightning impulse superimposed on DC voltage. These results have verified that the scarcity of initial electrons is the decisive factor of increasing the lightning impulse flashover voltage of vapor-mist dielectrics. We have also made clear that the scarcity is principally attributed to: (1) the reduction of effective period (lifetime) of initial electrons, (2)the suppression of photoelectric emission from electrodes.

Corresponding author

Correction information

Register with J-STAGE for free!