Определение карбонильных соединений и ионола в трансформаторном масле методом ИК-спектрометрии
Аннотация
В настоящее время трансформаторное масло наиболее широко используют как жидкий диэлектрик в высоковольтном оборудовании и особенно в силовых трансформаторах. Однако в процессе эксплуатации масло подвергается постепенному старению и его физико-химические свойства изменяются, что также приводит и к ухудшению изоляционных свойств. Поэтому основной задачей превентивной диагностики является контроль качества жидкого диэлектрика по некоторым параметрам, в том числе отслеживание изменения свойств трансформаторного масла происходят по расходованию антиокислительной присадки ионол, а также по накоплению окисленных соединений. Среди продуктов деструкции особое место занимают соединения кислотного характера (карбоновые кислоты, сложные эфиры, альдегиды, кетоны и др.). В настоящей работе предложена методика одновременного определения ионола и карбонильных соединений в масле в процессе его эксплуатации в высоковольтных трансформаторах. Методика базируется на ИК-спектрометрии. В отличие от традиционных методик определения ионола и кислотного числа, предлагаемая методика позволяет быстро и качественно получить более полную информацию о состоянии жидкого диэлектрика, а, следовательно, предпринять меры по улучшению его физико-химических и изоляционных свойств.
Ключевые слова: минеральное изоляционное масло, трансформаторное масло, антиокислительная присадка, ионол (2,6-ди-трет-4-метилфенол), карбонильные соединения, продукты окислительной деструкции, ИК-спектрометрияПолный текст:
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DOI: https://doi.org/10.15826/analitika.2023.27.4.003
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