Search for dissertations about: "frequency dependence partial discharge"

Found 3 swedish dissertations containing the words frequency dependence partial discharge.

  2. 1. Partial Discharges Studied with Variable Frequency of the Applied Voltage

    Author : Hans Edin; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; diagnostic methods; partial discharges; phase resolved; variable frequency; dielectric spectroscopy; dielectric response; harmonics; insulation; Electrical engineering; electronics and photonics; Elektroteknik; elektronik och fotonik;

    Abstract : This thesis concerns partial discharge (PD) diagnostics withvariable frequency of applied voltage in the frequency range 1mHz - 400 Hz. The exploration of a new type of spectroscopythat combines partial discharge analysis and dielectricresponse is demonstrated. READ MORE

  4. 2. Dielectric properties of poly(ethyelene-co-butyl acrylate) filled with Alumina nanoparticles

    Author : Nadejda Jäverberg; Hans Edin; Eva Mårtensson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nanocomposites; poly ethylene-co-butyl acrylate ; EBA; alumina; dielectric permittivity; absorbed water; humidity; temperature; dielectric spectroscopy; partial discharge; electrical treeing; Electrical engineering; Elektroteknik;

    Abstract : In this work dielectric properties of the poly(ethylene-co-butyl acrylate)filled with alumina nanoparticles are evaluated. These nanocomposite materialswere manufactured at the department of Fibre and Polymer Technology,KTH.This study is limited to the properties of general importance for the AC applications. READ MORE

  5. 3. Partial discharges in cylindrical cavities at variable frequency of the applied voltage

    Author : Cecilia Forssén; Roland Eriksson; Ron Brammer; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Electronic structure; Elektronstruktur;

    Abstract : Measurements of partial discharges are commonly used to diagnose the insulation system in high voltage components. Traditionally a single xed frequency of the applied voltage is used for such measurements as in the Phase Resolved Partial Discharge Analysis (PRPDA) technique. READ MORE