title: ÐÐµÑÐ¾Ð´Ñ Ð¾Ð±Ð½Ð°ÑÑÐ¶ÐµÐ½Ð¸Ñ Ð¾Ð´Ð½Ð¾ÑÐ°Ð·Ð½ÑÑ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ð¹ Ð½Ð° Ð·ÐµÐ¼Ð»Ñ Ð² ÑÐµÑÑÑ 6-35 ÐºÐ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Methods for detecting single phase earth faults in 6-35 kV networks
Creators: name: ÐÑÐ²ÑÑÐ¶Ð¸Ðº, ÐÐ»ÐµÐºÑÐ°Ð½Ð´Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: Ð¿ÐµÑÐµÐ¼ÐµÐ¶Ð°ÑÑÐ°ÑÑÑ Ð´ÑÐ³Ð°
Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ðµ Ð½Ð° Ð·ÐµÐ¼Ð»Ñ
MatLAB
Simulink
ÑÐµÐ»ÐµÐ¹Ð½Ð°Ñ Ð·Ð°ÑÐ¸ÑÐ° Ð¸ Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸ÐºÐ° Ð² ÑÐµÑÑÑ 6-35 ÐºÐ
Ð²ÑÐ±Ð¾Ñ Ð¿ÐµÑÐ²Ð¸ÑÐ½Ð¾Ð³Ð¾ Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ
ÑÐ¿ÐµÐºÑÑ ÑÐ¸Ð³Ð½Ð°Ð»Ð°
Ð¼Ð¾Ð´ÐµÐ»Ñ Ð´ÑÐ³Ð¾Ð²Ð¾Ð³Ð¾ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ñ
Ð³Ð°ÑÐ¼Ð¾Ð½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ¾ÑÑÐ°Ð² ÑÐ¸Ð³Ð½Ð°Ð»Ð°
LabVIEW
alternating arc
earth fault
matlab simulink
relay protection and automatics of grids 6-35 kv
primary equipment selection
spectrum of a signal
arc short-circuit fault model
harmonic content
labVIEW

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description: The theme of the final qualification work is Â«Methods for detecting single phase earth faults in 6-35 kV networksÂ». This work is dedicated to research into intermittent into alternating arc short circuits and the development of methods for their identification. Tasks that were solved during the study: 1. The study of the effect of intermittent arc faults taking place at 6-35 kV grids. 2. The features of the course of this process for different types of neutral grounding were analyzed. 3. Development of the Simulink model of a power system with an alternating and stable arc short circuit to the ground. 4. Analysis of the effect of this short circuit on the magnetization of current measuring transformers. The mathematical model of intermittent and stable earth faults were developed in the MatLAB. A series of oscillograms of alternating arc faults to earth were obtained for various types of neutral grounding. Harmonic and spectral analyzes of waveforms was carried out. The influence of current transformers on measuring was analyzed. The influence of the hysteresis of measuring current transformers on the secondary signal was investigated.