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水分对变压器油的影响过程?

来源:https://www.jnwdsh.com/ 日期:2021-04-15 发布人:woduanshihua
变压器油是对水分要求严格的一种绝缘油品。
Transformer oil is a kind of insulating oil with strict requirements for moisture.
即使油中有微量的水也会使变压器油的耐电压性能降低,介质损耗变大导致变压器故障。
Even if there is a small amount of water in the oil, the withstand voltage performance of the transformer oil will be reduced, and the dielectric loss will be increased, leading to transformer failure.
同时水分能通过各种途径影响氧化,它能提高金属的催化活性,使油加速氧化并生成大量的沉淀物。据测定,有游离水时在不太长时间内所析出的沉淀物数量相当于干燥油8年所析出的数量。含水量较大的油老化速度一般是含水量小的油的几倍。
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At the same time, water can affect the oxidation through various ways. It can improve the catalytic activity of metals, accelerate the oxidation of oil and generate a large amount of precipitates. It has been determined that the amount of precipitates precipitated in a short period of time with free water is equivalent to the amount precipitated in 8 years of dry oil. The aging rate of oil with high water content is several times of that of oil with low water content.
另外,水分的存在对变压器油的电气性能和理化性能均有很大的破坏。
In addition, the existence of moisture has great damage to the electrical and physical and chemical properties of transformer oil.
变压器油中含水量愈多,油质本身的老化、设备绝缘老化及金属部件的腐蚀速度愈快,因此监测变压器油中水分的含量十分必要。
The more water content in transformer oil, the faster the aging of oil itself, the aging of equipment insulation and the corrosion of metal parts. Therefore, it is necessary to monitor the water content in transformer oil.