Study on properties of dielectric liquids at low temperatures

Author

Wang Guokang ; Wang Yougong ; Li Liqin ; Xianmin, Chang ; Jing, He Xi ; Yaoxian, Gao

Author_Institution

Xi´´an Power Capacitor Res. Inst., China

fYear

1990

fDate

10-14 Sep 1990

Firstpage

519

Lastpage

523

Abstract

The crystallinity of several dielectric liquids at low temperatures used as capacitor impregnants was investigated by means of DSC (differential scanning calorimetry), and some of the results obtained are compared with those obtained by the traditional glass-tube test. Compared to the glass-tube method, DSC has the advantage of fast measurement speed. Further research results on the partial discharges of model capacitors (all-time capacitors and paper/film capacitors) impregnated with the dielectric liquids tested show that the DSC method is practicable for measuring the properties of dielectric liquids at low temperature

Keywords

calorimetry; capacitors; dielectric properties of liquids and solutions; partial discharges; DSC; all-time capacitors; capacitor impregnants; crystallinity; dielectric liquids; differential scanning calorimetry; measurement speed; paper/film capacitors; partial discharges; Crystallization; Dielectric liquids; Dielectric measurements; Electrical capacitance tomography; Helium; Partial discharge measurement; Partial discharges; Power capacitors; Temperature distribution; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Conduction and Breakdown in Dielectric Liquids, 1990. ICDL 1990. Conference Record., 10th International Conference on

Conference_Location

Grenoble

Type

conf

DOI

10.1109/ICDL.1990.202957

Filename

202957