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Calculation method of corona loss in EHV/UHV system based on distributed parameter characteristic
Author(s) -
Pan Wenxia,
Li Yi,
Chen Xin
Publication year - 2019
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.22859
Subject(s) - corona (planetary geology) , electric power transmission , line (geometry) , transmission line , voltage , corona ring , power (physics) , electrical engineering , transmission (telecommunications) , corona discharge , engineering , computational physics , physics , mathematics , geometry , thermodynamics , astrobiology , venus
For the calculation of corona loss of extra‐/ultra‐high voltage (EHV/UHV) transmission lines, especially the estimation of real‐time corona loss, there exists no accurate method. In this paper, a calculation method of corona loss in the EHV/UHV system based on a distributed parameter characteristic is proposed. Based on the π‐shaped equivalent circuit of the long‐line distributed parameter characteristic, and considering the voltage distribution along the line, a formula for calculating the corona loss under a variety of weather and annual average conditions is derived and the power equation for the corona loss of EHV/UHV system is established by the method. The example results show that the method is quite accurate. The calculation method of this paper can consider different weather conditions of the line sections to calculate the corona loss. It is more in line with the actual weather conditions on the surface of the EHV/UHV transmission lines. And the method can analyze the corona loss and its proportion to the total loss of the system under the annual average and different weather conditions. It is of great significance to the design and operation of an EHV/UHV system. © 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.