E3S Web Conf.
Volume 178, 2020High Speed Turbomachines and Electrical Drives Conference 2020 (HSTED-2020)
|Number of page(s)||6|
|Published online||09 July 2020|
Analysis of influence of external atmospheric factors on the accuracy of fault location on overhead power lines
Kamyshin Institute of Technology (branch) Volgograd State Technical University, 403874 Russia, Volgograd region, Kamyshin, Lenina st. 6a
* Corresponding author: firstname.lastname@example.org
Devices of fault location are widespread in electrical grids. In overhead power lines of voltages of 10 kV and higher, such devices are based on measurements of parameters in emergency mode. These devices can be divided into two main groups: designed to determine fault location of short circuits and of ground short circuit. In both cases, when detecting fault location, analyzed are not only the current and voltage parameters at the accident time, but also the parameters of overhead power line. When analyzing equivalent circuits of power lines, approximate tabular values of direct and quadrature parameters are used. It was revealed, that the line parameters are significantly affected by external atmospheric factors: ambient temperature, soil moisture, wind strength and direction, ice formation, etc. To accurately determine the fault location, it is necessary to evaluate the influence of these factors on the linear parameters of the overhead line. The paper presents analysis of the influence of changes in atmospheric factors on parameters of overhead power line. A methodology for calculating the operation setpoints of the device for fault location in power line is given.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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