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使用中的变压器油的存在的现象

运行中的变压器油经常处于高温(85℃左右)下,与大气接触就会发生氧化。而油中存在的某些物质(如铜等)又会加速这种氧化过程。油氧化时,不断分解出酸、灰分等杂质,从而使油的性能劣化。当油中杂质达到一定浓度时,会生成油泥沉降,油泥聚积在绕组、铁芯和散热管上,影响变压器散热。此外,变压器油还会从大气中吸收潮气。在上述各种因素的作用下,变压器油的质量会逐渐变坏(即老化),其绝缘强度逐渐降低,使变压器油老化变质。
Transformer oil in operation is often in high temperature (about 85 degrees Celsius), and contact with the atmosphere will occur oxidation. Some substances in oil, such as copper, accelerate the oxidation process. When oil is oxidized, the impurities such as acid and ash are broken down continuously, so that the performance of the oil is degraded. When the impurities in oil reach a certain concentration, oil sludge will be deposited, and oil sludge will accumulate in the windings, iron cores and heat pipes, which will affect the heat dissipation of the transformer. In addition, transformer oil also absorbs moisture from the atmosphere. In the above-mentioned various factors, the quality of transformer oil will gradually deteriorate (ie aging), and its insulation strength gradually reduced, so that the transformer oil aging deterioration.
变压器出现假油位可能是由以下原因引起的:(1)油标管堵塞。(2)呼吸器堵塞。(3)安全气道通气孔堵塞。(4)薄膜保护式油枕在加油时未将空气排尽。
山东变压器油
The false oil level in the transformer may be caused by the following: (1) the oil gauge pipe is blocked. (2) respirator blockage. (3) airway obstruction of safety airway. (4) the film protected oil pillow does not exhaust the air when it is filling.
热老化在所有变压器油中都存在,油箱中既有原来残留的氧,而纤维分解时也会产生氧。运行温度较高时,变压器油的氧化过程就进行得比较快,使得粘度增高、颜色变深、泊泥增多、tgδ值增大、击穿电压下降等。
Thermal aging is present in all transformer oils, where the original residual oxygen is produced and the oxygen is produced when the fiber is broken down. When the operation temperature is high, the oxidation process of transformer oil is faster, which makes the viscosity increase, the color becomes deeper, the mud increases, the TG delta value increases, and the breakdown voltage decreases.
另外,还存在着电老化的问题,随着加压时间的延长,油间隙的击穿电压下降。油浸电力变压器中,高场强处产生局部放电,促使油分子进一步互相缩合成更高分子量的腊状物质,同时逸出低分子的气体。腊状物质积聚于高场强区附近的绕组绝缘上,堵塞油道、影响散热、产生的气体增多,放电更易发展。
In addition, there is also the problem of electrical aging. As the pressure time increases, the breakdown voltage of the oil gap decreases. In oil immersed power transformers, partial discharges occur at high field strengths, which promote the condensation of oil molecules into more highly polymeric waxes, while escaping low molecular gases. The wax material accumulates in the winding insulation near the high field strength, blocking the oil passage, affecting the heat dissipation, increasing the gas generated, and discharging more easily.
有了上面的小总结,希望对广大客户有所帮助,如果有什么不理解的或者寻求帮助的请点击我们的官方网站:山东变压器油http://www.jnwdsh.com或者来电咨询,我们会尽全力为您解决
There is a small sum above, hope to help customers, if what you do not understand or seek help please click on our official website: Shandong transformer oil http://www.jnwdsh.com or contact us, we will do our best for you to solve
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