Анализ особенностей газосодержания масел в бездефектных трансформаторах негерметичного исполнения
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Дата
2017
Автори
ORCID
DOI
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Видавець
НТУ "ХПИ"
Анотація
В статье, приведены результаты анализа особенностей газосодержания трансформаторных масел в бездефектных трансформаторах негерметичного исполнения. Выполнен анализ распределений газов в масле бездефектных трансформаторов негерметичного исполнения по уровням концентраций и критерию максимального газа. Проанализированы распределения значений скоростей нарастания и отношений пар газов. Выполнен анализ процентного содержания газов в пробах масел бездефектных трансформаторов негерметичного исполнения. Исследованы корреляционные связи между газами, для проб масел с
максимальным содержанием разных газов. Полученные результаты позволяют сделать вывод о значимых количественных и качественных различиях газосодержания масел в бездефектном герметичном и негерметичном маслонаполненном оборудовании.
In the article, the results of the analysis of the peculiarities of the gas content of transformer oils in defect-free transformers of a nonhermetic execution are presented. Analysis of gases distributions in oil of defect-free transformers of a non-hermetic execution by concentrations levels and the criterion of key gas, is fulfilled. The distributions of the values of the rates of increase and the ratio of pairs of gases are analyzed. The percentage of gases in oil samples from defect-free transformers of a non-hermetic execution are analyzed. Correlation relations between gases, for samples of oils with the maximum content of different gases, are investigated. The obtained results allow to draw a conclusion about significant quantitative and qualitative differences in the gas content of oils in defect-free hermetic and unsealed oil-filled equipment. In particular, for non-hermetically sealed transformers, there is a low hydrogen content, which is due to the diffusion of this gas into the atmosphere. Also for non-hermetic equipment, an unusually high content of ethylene and acetylene is characteristic, which is caused by intensive oxidation of the oil under conditions of access of atmospheric oxygen. Significant influence of the design of transformers on the values of the rate of increase of gases and the ratio of gases, is established. The data given in the article allow us to conclude that it is necessary to correct the values of gas concentrations, the rates of gas build-up and gas ratios for transformers non-hermetic execution.
In the article, the results of the analysis of the peculiarities of the gas content of transformer oils in defect-free transformers of a nonhermetic execution are presented. Analysis of gases distributions in oil of defect-free transformers of a non-hermetic execution by concentrations levels and the criterion of key gas, is fulfilled. The distributions of the values of the rates of increase and the ratio of pairs of gases are analyzed. The percentage of gases in oil samples from defect-free transformers of a non-hermetic execution are analyzed. Correlation relations between gases, for samples of oils with the maximum content of different gases, are investigated. The obtained results allow to draw a conclusion about significant quantitative and qualitative differences in the gas content of oils in defect-free hermetic and unsealed oil-filled equipment. In particular, for non-hermetically sealed transformers, there is a low hydrogen content, which is due to the diffusion of this gas into the atmosphere. Also for non-hermetic equipment, an unusually high content of ethylene and acetylene is characteristic, which is caused by intensive oxidation of the oil under conditions of access of atmospheric oxygen. Significant influence of the design of transformers on the values of the rate of increase of gases and the ratio of gases, is established. The data given in the article allow us to conclude that it is necessary to correct the values of gas concentrations, the rates of gas build-up and gas ratios for transformers non-hermetic execution.
Опис
Ключові слова
анализ растворенных газов, уровни концентраций, окисление масла, ошибочный диагноз, корреляция, dissolved gas analysis, concentration levels, oil oxidation, erroneous diagnosis, correlation
Бібліографічний опис
Шутенко О. В. Анализ особенностей газосодержания масел в бездефектных трансформаторах негерметичного исполнения / О. В. Шутенко // Вісник Нац. техн. ун-ту "ХПІ" : зб. наук. пр. Сер. : Техніка та електрофізика високих напруг = Bulletin of the National Technical University "KhPI" : coll. works. Ser. : Technique and Electrophysics of High Voltage. – Харків : НТУ "ХПІ", 2017. – № 38 (1260). – С. 84-97.