Corona Discharge Loss Reduction Method Developed on the Basis of a Three-Dimensional Model of Power Line Strength

EasyChair Preprint 6815

Abstract

An analysis of corona losses in extra-high voltage networks was carried out. It was found that corona losses constitute a significant part of losses in power lines. A method of calculating the electric field strength on the overhead line wire, taking into account its sag, has been developed. The obtained results make it possible to assume that the value of corona losses is not uniformly distributed along the length of the span. In the vicinity of the suspension point, the corona intensity is the highest and decreases until a certain distance along the wire, and then tends to increase again. The obtained values of intensities show that if we exclude the possibility of corona on the wire sections with the highest intensity, then the losses on the line span are reduced by 10%. The variants of reduction of working electric field intensity on the surface of overhead line wires are considered.

Keyphrases: corona losses, electric field intolerance, height of wire suspension, power line capacitance, power line support, transmission line

@booklet{EasyChair:6815,
  author    = {Sergiy Shevchenko and Andrii Potryvai and Dmytro Danylchenko and Elman Asadov and Oleksandr Miroshnyk and Mohamed Qawaqzeh},
  title     = {Corona Discharge Loss Reduction Method Developed on the Basis of a Three-Dimensional Model of Power Line Strength},
  howpublished = {EasyChair Preprint 6815},
  year      = {EasyChair, 2021}}