Open AccessLightning impulse breakdown path and characteristics with dielectric BMC barrier inserted sphere‐plane electrode
Author(s) -
Seok BokYeol,
Choi Won
Publication year - 2020
Publication title -
iet science, measurement and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.418
H-Index - 49
eISSN - 1751-8830
pISSN - 1751-8822
DOI - 10.1049/iet-smt.2019.0521
Subject(s) - dielectric , materials science , electrode , impulse (physics) , breakdown voltage , voltage , composite material , penetration (warfare) , dielectric strength , dielectric barrier discharge , electrical breakdown , partial discharge , electrical engineering , chemistry , optoelectronics , physics , mathematics , classical mechanics , engineering , operations research
This study deals with the electrical breakdown characteristics of the sphere‐plane electrode system with the dielectric barrier of bulk moulding compound (BMC) material under the positive lightning impulse voltage. The sphere electrode has a spherical shape of 50 mm in diameter and suspended with a metal rod of 10 mm in diameter, while the plane electrode has a circular with a diameter of 350 mm. The dielectric barrier has a square plate shape of BMC material, and the dimension is changed from 80 × 80 to 240 × 240 mm 2 . Experimental results show that electrical breakdown paths could be identified into three categories, depending on the dielectric barrier position and the dimension. The larger and farther away from the sphere electrode the dimension of the dielectric barrier is, the occurrence probability of electrical breakdown through the penetration of dielectric barrier becomes. It was confirmed that the breakdown voltage considerably depends on the dimension of the dielectric barrier and the dielectric barrier position.