Autors: Hadzhiev, I. S., Malamov, D. V., Georgiev A. P.
Title: Analysis of earth faults in a wind farm integrated into the electric power system
Keywords: wind farm, earth fault, electric power system, higher harmonics

Abstract: The aim of this paper is to investigate the processes of earth faults occurrence in a wind farm network, integrated into the electric power system. The wind power farm is realized with squirrel-cage induction generators (SCIG). Each generator has a 0.69/21kV step-up transformer. The connection of the wind power farm to the electric power system is implemented through a step-up substation with a single 21/115kV transformer. The star center of the transformer 21kV winding is grounded by means of a 40 ohm resistor. A synthesized in MatLab/Simulink computer model investigates the processes of earth faults occurrence in the medium-voltage (MV) network of the wind farm. Results have been obtained, concerning the influence of the earth fault location on the transient voltages and currents at both rated torque of the generators and no-operating generators.


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IOP Conference Series: Materials Science and Engineering, vol. 878, issue 1, pp. 1-8, 2020, United Kingdom, Institute of Physics Publishing, ISSN 1757-8981

Copyright Institute of Physics Publishing

Вид: статия в списание, публикация в реферирано издание, индексирана в Scopus