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首页> 外文期刊>IEEE Electrical Insulation Magazine >Aging of Cellulose at Transformer Service Temperatures. Part 1: Influence of Type of Oil and Air on the Degree of Polymerization of Pressboard, Dissolved Gases, and Furanic Compounds in Oil
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Aging of Cellulose at Transformer Service Temperatures. Part 1: Influence of Type of Oil and Air on the Degree of Polymerization of Pressboard, Dissolved Gases, and Furanic Compounds in Oil

机译:变压器工作温度下的纤维素老化。第1部分:石油和空气类型对纸板中压制板,溶解气体和呋喃化合物的聚合度的影响

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摘要

A power transformer is expected to operate up to 40 years. With current cost-benefit calculations, the user is forced to perform maintenance that will bring a further extension of the transformer life. The maintenance can only be based on on-site and off-site monitoring with extended analytical and electrical tests, which can define the service condition of the transformer and predict its further life expectancy. The investment boom of the 1970s determines, to a large extent, the age distribution of transformers in service, and the percentage of transformers older than 30 years is increasing in both the utilities and industry. Highly loaded generator and furnace transformers show a more accelerated aging in comparison to grid units. It is not unusual that older transformers have 3 to 4% humidity in the solid insulation.
机译:电力变压器可使用长达40年。根据当前的成本效益计算,迫使用户执行维护工作,这将进一步延长变压器的使用寿命。维护只能基于带有扩展的分析和电气测试的现场和非现场监控,这可以定义变压器的使用条件并预测其进一步的预期寿命。 1970年代的投资热潮在很大程度上决定了使用中的变压器的使用年限,在公用事业和工业领域中,使用30年以上的变压器的百分比都在增加。与电网单元相比,高负载的发电机和熔炉变压器显示出更快的老化。老式变压器的固体绝缘层中的湿度为3%至4%,这并不罕见。

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