Internal ionization process in polymer dielectrics in strong electrical field

✍ Scribed by G.T Alisoy; H.Z Alisoy; S.A Rustamov; M Arkan

• Book ID: 104079094
• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 239 KB
• Volume: 335
• Category: Article
• ISSN: 0378-4371
• DOI: 10.1016/j.physa.2003.11.013

✦ Synopsis

In this paper, the e ects of internal ionization process, which occur in the voids under strong electrical ÿeld, on the polymer dielectrics degradation with time are analyzed. Theoretical equations have been derived for partial discharge V -I characteristic, voltage and discharge current variation with time in the discharge channel, discharge channel cross-section area variation with time and voltage, and channel expansion. The results have shown that approximately 21% of released energy is used for channel expansion and ∼ 3% of released energy is used for atom ionization when resonant emission and heat transfer are ignored. E ect of discharge impulses on the surface of dielectric for di erent pl values has been compared.