Optimal frequency and voltage determination method of deicing power source for transmission lines

Authors

Tao HU, School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410114 , China
Ci TANG, School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410114 , China
Jie CAI, School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410114 , China
Zhaoliang LI, School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410114 , China
Lijun CHEN, School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410114 , China

Keywords

AC deicing, highfrequency excitation deicing, dielectric loss, skin effect

Abstract

Based on the theory of uniform transmission line, an equivalent circuit model and an equivalent distributionparameter circuit model are established respectively for studying the deicing process of transmission lines. The determinizing method for the optimal frequency and voltage of the deicing power supply is then given. A transmission line with the rated voltage of 110 kV is adopted as an example. Combinations of frequency and voltage are obtained at several dielectric loss angles. Finally, the effects from the frequency and voltage on the thermal power and power factor along the transmission line are analyzed by utilizing MATLAB/Simulink. The research results show that both frequency and voltage of the deicing power supply play a decisive role in deicing process of transmission lines. The proposed method can not only realize reliable and efficient deicing effects for icecovered lines, but also reduce the requirements of the deicing power supply on its power electronics selection in terms of switching frequency and withstand voltage level.

DOI

10.19781/j.issn.16739140.2020.03.021

First Page

155

Last Page

161

Recommended Citation

HU, Tao; TANG, Ci; CAI, Jie; LI, Zhaoliang; and CHEN, Lijun (2020) "Optimal frequency and voltage determination method of deicing power source for transmission lines," Journal of Electric Power Science and Technology: Vol. 35: Iss. 3, Article 21.
DOI: 10.19781/j.issn.16739140.2020.03.021
Available at: https://jepst.researchcommons.org/journal/vol35/iss3/21