Registration and simulation of partial discharges in free bubbles at AC voltage

Autor:	A. V. Ridel, M. B. Meredova, D. I. Karpov, D. A. Medvedev, Sergey M. Korobeynikov, A. G. Ovsyannikov
Rok vydání:	2019
Předmět:	010302 applied physics Materials science Field (physics) Transformer oil Lattice Boltzmann methods Mechanics 01 natural sciences Current transformer Electric field 0103 physical sciences Electrode Partial discharge Electrical and Electronic Engineering Voltage
Zdroj:	IEEE Transactions on Dielectrics and Electrical Insulation. 26:1035-1042
ISSN:	1558-4135 1070-9878
DOI:	10.1109/tdei.2019.007808
Popis:	Partial discharges in free bubbles in transformer oil are investigated both experimentally and theoretically. Optical, electric and optoelectronic registration are performed to obtain a picture of partial discharge. The time duration of electrical and optoelectronic signals is practically the same, 50 ns. Much longer time is needed for bubble deformation and its breaking, approximately several milliseconds. Electric properties obtained in experiments are confirmed by the simulation of the electrical field, “true” and “apparent” charges of partial discharge. Hydrodynamic behavior in experiments corresponds well to the simulation with the lattice Boltzmann method.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f3bb27511346f86ddd98c79833674468 https://doi.org/10.1109/tdei.2019.007808 Zobrazit plný text záznamu