title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ¿Ð¾ÑÐ¾Ð±Ð¾Ð² Ð¿Ð¾Ð¸ÑÐºÐ° Ð¿Ð¾Ð²ÑÐµÐ¶Ð´ÐµÐ½Ð¸Ð¹ Ð² Ð²Ð¾Ð·Ð´ÑÑÐ½ÑÑ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»Ð¸ÑÐµÐ»ÑÐ½ÑÑ ÑÐµÑÑÑ ÑÑÐµÐ´Ð½ÐµÐ³Ð¾ ÐºÐ»Ð°ÑÑÐ° Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ñ
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: Investigation of ways to search for damage in the air distribution networks of the middle class voltage
Creators: name: ÐÐ°Ð½Ð¾Ð², ÐÐ°Ð²ÐµÐ»
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: 2019
Subjects: ÐÐ½Ð´Ð¸ÐºÐ°ÑÐ¾ÑÑ
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description: The dissertation is devoted to the topic of indication of single-phase earth faults in the air distribution networks of the middle voltage class. This type of damage is the most difficult to fix. Proper functioning of the indicators is ensured by the operation of the algorithms, one of which is based on the analysis and comparison of phase currents during the first fluctuation and the other on the calculation of settings based on zero-sequence currents flowing through the indicators. The proposed algorithms make it possible to determine the location of damage in the air distribution network with a sufficient degree of accuracy and localize it, leaving the greatest number of consumers to work. The possibility of installing a high resistance in neutral of the network and its effect on the sensitivity of relay protection is considered. The developed methods increase the reliability of the power supply system.