Corona and Electric Field Effects of Transmission Lines


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Corona and Electric Field Effects of Transmission Lines
1010603 Corona and Electric Field Effects of Transmission Lines
Introduction Corona or partial discharge is an ionization process initiated by the acceleration of free electrons in the air by an electric field. If the field strength is high enough, electrons will acquire enough energy to ionize neutral molecules in the air. At field strength levels near 3000 kV/m (30 kV/cm) in either positive or negative polarity, an avalanche process from subsequent collisions can lead to partial discharges in the air. Positive and negative partial disch…
Citation
Masoud Farzaneh, Ph.D.; Shahab Farokhi, Ph.D.; William A. Chisholm, Ph.D.: Electrical Design of Overhead Power Transmission Lines. Corona and Electric Field Effects of Transmission Lines, Chapter (McGraw-Hill Professional, 2013), AccessEngineering Export