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A particle simulation of negative corona discharge in SF 6 gas
Author(s) -
Sasano Shuichi,
Cho Mengu
Publication year - 2002
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.10065
Subject(s) - electric field , electron avalanche , corona discharge , corona ring , atomic physics , electron , ionization , particle in cell , space charge , electrode , ion , partial discharge , corona (planetary geology) , physics , particle (ecology) , monte carlo method , materials science , voltage , nuclear physics , oceanography , statistics , mathematics , quantum mechanics , astrobiology , venus , geology
In order to study partial discharge phenomena in a gas‐insulated system, we have developed a simulation code using the MC‐PIC (Monte Carlo Particle‐in‐Cell) method. The MC‐PIC code can simulate ionization and attachment in a nonuniform unsteady electric field with sufficient quantitative accuracy by considering collision cross‐section data as close as possible to the real data. A negative DC corona discharge in SF 6 is simulated. The electric field is distorted near the rod electrode once the corona discharge starts, because the positive ions and negative ions are polarized near the rod electrode after the electron avalanche ends. The electric field strength decreases in comparison with the initial condition due to the negative space charge. The image current due to the motion of electrons dominates the current pulse. The simulation result agrees well with the experimental result. © 2002 Wiley Periodicals, Inc. Electr Eng Jpn, 141(3): 1–8, 2002; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.10065