title: ÐÐ»Ð¸ÑÐ½Ð¸Ðµ ÑÐµÐ¿Ð»Ð¾Ð²Ð¾Ð³Ð¾ Ð²Ð¾Ð·Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ Ð½Ð° ÑÐ¾Ð¿ÑÐ¾ÑÐ¸Ð²Ð»ÐµÐ½Ð¸Ðµ ÐºÐ¾ÑÐ¾Ð½Ð¾Ð³Ð°ÑÑÑÐ¸Ñ Ð¿Ð¾ÐºÑÑÑÐ¸Ð¹ Ð¾Ð±Ð¼Ð¾ÑÐºÐ¸ ÑÑÐ°ÑÐ¾ÑÐ° ÑÑÑÐ±Ð¾Ð³ÐµÐ½ÐµÑÐ°ÑÐ¾ÑÐ°
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: Influence of heat exposure on the resistance of corona-suppressing coating of turbogenerator stator winding
Creators: name: Ð§ÐµÑÐ¸Ð»Ð¾Ð²Ð°, ÐÐ¸ÐºÑÐ¾ÑÐ¸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: 2023
Subjects: Ð²Ð¸Ð±ÑÐ¾Ð´ÑÐ³Ð¾Ð²Ð¾Ð¹ ÑÐ°Ð·ÑÑÐ´
ÐºÐ¾ÑÐ¾Ð½Ð¾Ð³Ð°ÑÑÑÐµÐµ Ð¿Ð¾ÐºÑÑÑÐ¸Ðµ
Ð¾Ð±Ð¼Ð¾ÑÐºÐ° ÑÑÐ°ÑÐ¾ÑÐ° ÑÑÑÐ±Ð¾Ð³ÐµÐ½ÐµÑÐ°ÑÐ¾ÑÐ°
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Ð¿Ð°Ð·Ð¾Ð²ÑÐ¹ ÑÐ°Ð·ÑÑÐ´
ÑÐ¾Ð¿ÑÐ¾ÑÐ¸Ð²Ð»ÐµÐ½Ð¸Ðµ Ð¿Ð¾ÐºÑÑÑÐ¸Ñ
ÑÐµÐ¿Ð»Ð¾Ð²Ð¾Ðµ ÑÑÐ°ÑÐµÐ½Ð¸Ðµ
vibration sparkling
corona-suppressing coating
turbogenerator winding
polymer matrix solidification
slot discharge
coating resistance
thermal deterioration

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description: The subject of the masterâs thesis is Â«Influence of heat exposure on the resistance of corona-suppressing coating of turbogenerator stator windingÂ». In the slot part of the stator winding of high-voltage electrical machines, slot discharge may occur. To eliminate them, a low-resistance conductive coating based on graphite is applied to the surface of the insulation. Then exposed to elevated temperature, there is a sharp drop in the resistance of the coating below acceptable limits. This can lead to the appearance of vibration sparkling that are extremely dangerous for the stable operation of an eclectic machine. In this paper possible causes of a sharp decrease in the coating resistance at the first stage of accelerated thermal aging are considered. As a result of the work, the following result are obtained: 1. A change in the size of graphite particles and additional processing of their surface by calcination do not cause a sharp decrease in the resistance of slotted coating at the first stage of thermal aging. 2. The most probable cause of resistance instability during thermal aging is the unfinished process of formation of the polymer matrix structure, which can be completed at the initial stage of winding operation at operating temperature. 3. Possible ways of solving these problems are presented in this work.