title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐ¸ ÑÑÐ¿ÐµÑÐ½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ Ð²ÑÐºÐ»ÑÑÐ°ÑÐµÐ»ÐµÐ¹ ÑÐ¸Ð»Ð¾Ð²ÑÑ ÑÑÐ°Ð½ÑÑÐ¾ÑÐ¼Ð°ÑÐ¾ÑÐ¾Ð²
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
Creators: name: ÐÐ°ÑÐ¸Ð½, ÐÐ°Ð´Ð¸Ð¼
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¢ÑÐ°Ð½ÑÑÐ¾ÑÐ¼Ð°ÑÐ¾ÑÑ ÑÐ¸Ð»Ð¾Ð²ÑÐµ
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description: In this work was investigated switching processes when energizing a 500 kV overhead line Berezovskaya Power Station- Itatskaya together with block power transformers TNC-1000000/525/24.
In the process of energizing in the circuit breakers aperiodic components were observed. That prevented zero crossing and, possibly, disconnection of linear circuit breakers during operation of the main relay protection.
In order to establish the reasons for the appearance of aperiodic components, a mathematical model of the transformer was developed to take into account the processes in the transformer magnetic circuit.
Using the developed model, it was possible to establish that the cause of the delay in the transition of current through zero is the aperiodic component caused by the flow of current in the neutral of the transformer when the phases of the switches are not simultaneously closed.
In order to eliminate delays in the transition of current through zero, measures were developed to limit the aperiodic component. For several factors, the choice of the optimal technical measure was made.
The thesis consists of an introduction, three chapters and conclusion. Contains 70 pages, including 28 figures, 4 tables and 22 sources.