Диагностика состояния высоковольтных маслонаполненных вводов на основе анализа динамики изменения показателей изоляции во времени
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Дата
2019
DOI
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Видавець
Национальный технический университет "Харьковский политехнический институт"
Анотація
В статье приведены результаты исследования зависимостей показателей изоляции от продолжительности эксплуатации для исправных и неисправных высоковольтных маслонаполненных вводов как герметичной, так и негерметичной конструкции. Для исследований использовались математические модели дисперсионного анализа линейной регрессии, модель парного регрессионного анализа и корреляционный анализ. По результатам исследований установлено, что в высоковольтных вводах с разным состоянием имеет место не только различие в численном значении показателей изоляции, что известно и широко используется, но и существенное различие в динамике изменения показателей во времени, что может быть использовано для
диагностики состояния высоковольтных вводов.
The article presents the results of the study of the insulation dependence performance on the duration of operation for serviceable and faulty high-voltage oilfilled bushings of both sealed and leak-proof design. Mathematical models of variance analysis of linear regression, model of pair regression analysis and correlation analysis were used for research. According to the research results,it was found that in high-voltage bushings with different States there is not only a difference in the numerical value of the insulation indica-tors, which is known and widely used, but also a significant difference in the dynamics of the indicators in time. So for serviceable high-voltage bushings is characterized by the practical absence of a significant systematic component in the dependence of indicators on the duration of operation, the practical absence of a significant correlation between the indicators, as well as the presence of a sig-nificant correlation between the indicatorsof isolation bushings installed on adjacent phases. For faultyhigh-voltage bushings is characterized by the presence of a significant systematic component in the dependence ofthe indicators on the duration of operation, the presence of a significant correlation between the insulation indicators, as well as the lack of a significant correlation between the indicators of faulty bushing and indicators of serviceable bushings installed on adjacent phases. The revealed differences can be used for early diagnosis of the insulation state of high-voltage bushings.
The article presents the results of the study of the insulation dependence performance on the duration of operation for serviceable and faulty high-voltage oilfilled bushings of both sealed and leak-proof design. Mathematical models of variance analysis of linear regression, model of pair regression analysis and correlation analysis were used for research. According to the research results,it was found that in high-voltage bushings with different States there is not only a difference in the numerical value of the insulation indica-tors, which is known and widely used, but also a significant difference in the dynamics of the indicators in time. So for serviceable high-voltage bushings is characterized by the practical absence of a significant systematic component in the dependence of indicators on the duration of operation, the practical absence of a significant correlation between the indicators, as well as the presence of a sig-nificant correlation between the indicatorsof isolation bushings installed on adjacent phases. For faultyhigh-voltage bushings is characterized by the presence of a significant systematic component in the dependence ofthe indicators on the duration of operation, the presence of a significant correlation between the insulation indicators, as well as the lack of a significant correlation between the indicators of faulty bushing and indicators of serviceable bushings installed on adjacent phases. The revealed differences can be used for early diagnosis of the insulation state of high-voltage bushings.
Опис
Ключові слова
длительность эксплуатации, ковариационный анализ, регрессионный анализ, operation duration, covariance analysis, regression analysis
Бібліографічний опис
Шутенко О. В. Диагностика состояния высоковольтных маслонаполненных вводов на основе анализа динамики изменения показателей изоляции во времени / О. В. Шутенко, О. А. Загайнова // Вісник Національного технічного університету "ХПІ". Сер. : Техніка та електрофізика високих напруг = Bulletin of the National Technical University "KhPI". Ser. : Technique and Electrophysics of High Voltage : зб. наук. пр. – Харків : НТУ "ХПІ", 2019. – № 18. – С. 62-76.