Method for evaluating quality state of transformer
A state evaluation and transformer technology, applied in the field of transformers, can solve problems such as untargeted, blind and incomplete transformer maintenance, and achieve the effect of improving repair quality and safety
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[0028] Take the 408316 transformer of Tianshengqiao Converter Station of Yunnan Power Grid (model: EFPH8554; rated capacity: 354 / 177 / 177MVA (line / wye / delta); rated voltage: Number of phases: single phase) as an example, the transformer quality state evaluation method provided by the present invention will be described.
[0029] On July 18, 2004, during routine chromatographic analysis of transformer insulating oil, total hydrocarbons (8390.32×10-6μL / L), hydrogen (2546.19×10-6μL / L), acetylene (28.23×10-6μL / L) were found The contents were far greater than the attention value stipulated in the regulations. Afterwards, several sampling tests were carried out, and it was found that the chromatographic data had a further increasing trend. After a comprehensive analysis of the chromatographic data, it was considered that if the operation continued, a major accident would occur, so it was decided to immediately withdraw from the operation for repair. Considering that the equipment ...
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