Brief Introduction to the Fundamentals of Electrical Discharges in Liquids and Liquid/Solid Interfaces
- EMC Specialist, ABB AB – FACTS in Västerås, Sweden
B9 L2 H1
In this seminar I will introduce the basics of the electrical discharges (plasma) in non-polar liquids and liquid/solid interfaces and their importance in specific applications such as high-powered transformers, capacitors, cables etc. The precursor mechanism of breakdown in these liquid and liquid/solid insulating systems are usually call streamers and their characteristics vary significantly with the nature of the liquid, voltage, pressure, electrode configuration, etc.
Overview
Abstract
In this seminar, I will introduce the basics of electrical discharges (plasma) in non-polar liquids and liquid/solid interfaces and their importance in specific applications such as high-powered transformers, capacitors, cables, etc. The precursor mechanism of breakdown in these liquid and liquid/solid insulating systems are usually called streamers and their characteristics vary significantly with the nature of the liquid, voltage, pressure, electrode configuration, etc. In the first part of this seminar, I will introduce the state of the art and classification of the streamers and their main physical characteristics. The second part of the seminar is dedicated to the theoretical understanding of the streamers and the importance of the gas/liquid interface formation during their inception and propagation. The last and fourth part of the seminar is dedicated to measurement techniques and detection and future work for the analysis of the phenomena. Note that the future analysis and study of the streamers involves several side research areas such as signal processing, fluid, and electro-fluid dynamics methods, etc. thus further effort and research need to be performed in these areas to improve the understanding of the phenomena.
