Title :
Corona Characteristics under Lightning Surges
Author :
Jia, Wang ; Xiaoqing, Zhang
Author_Institution :
Beijing Jiaotong Univ., Beijing
Abstract :
An analysis is made for the attenuation and distortion of lightning surges traveling on overhead transmission lines under the corona condition. The corona characteristics are described by the q-u curves. The parameters of the surge waveshapes are varied experimentally to examine their effects on the q-u curves. A discussion about the experimental data is presented with emphasis on the corona onset voltage gradient, dynamic capacitance of the line conductor and energy losses of corona. It provides the foundation for accurate calculation of lightning overvoltages.
Keywords :
corona; lightning; overvoltage protection; power overhead lines; power system protection; surge protection; corona characteristics; corona onset voltage gradient; dynamic capacitance; energy losses; lightning surges; line conductor; overhead transmission lines; q-u curves; surge waveshapes; Capacitance; Corona; Distortion measurement; Electrodes; Equations; Lightning protection; Optical attenuators; Optical propagation; Surge protection; Voltage; corona characteristics; lightning surge; q-u curve;
Conference_Titel :
Electromagnetic Compatibility, 2007. EMC 2007. International Symposium on
Conference_Location :
Qingdao
Print_ISBN :
978-1-4244-1371-3
Electronic_ISBN :
978-1-4244-1372-0
DOI :
10.1109/ELMAGC.2007.4413489