变压器油油质的辨别方法! - 山东变压器油哪家好

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变压器油油质的辨别方法!

发布时间2019-03-19  来源:http://www.wunqdctk.com

变压器油在运用过程中会受环境污染和氧化产生的树脂和沉淀物的影响从而发作劣化,或是在变压器有毛病时,均会招致其外状发作改动。应用油的外状对变压器油及变压器的运转情况做出判别剖析是一种最根本、最直观的判别办法。
  Transformer oil will deteriorate due to the influence of resin and sediment produced by environmental pollution and oxidation, or change its appearance when transformer is faulty. Applying the appearance of oil to discriminate and analyze the operation of transformer oil and transformer is the most fundamental and intuitive discriminant method.
  用玻璃杯从变压器底部取样阀中取出少质变压器油油样后,对着阳光认真察看,良好的变压器油应该是清洁而透明的,不得有沉淀、机械杂质、悬浮物质及棉絮状物质。
  After taking a few transformer oil samples from the sampling valve at the bottom of the transformer with a glass, and looking carefully at the sunshine, a good transformer oil should be clean and transparent, without precipitation, mechanical impurities, suspended substances and cotton flocculent substances.
  一、若油样颜色为棕色或褐色,其酸值和水溶性酸常常接近或超越国际规范留意值,但是,其色谱剖析没有一定的规律性。普通状况下,关于颜色较深的变压器油,应增强油的化学监视实验,缩短实验周期,或者能够说,就不适合再用了。应对变压器油停止再生处置,以避免事故的发作。
  First, if the color of oil sample is brown or brown, its acid value and water-soluble acid are often close to or beyond the international standards, but there is no certain regularity in chromatographic analysis. Generally speaking, for transformer oils with darker colors, chemical monitoring experiments should be strengthened to shorten the experimental period, or, in other words, it is not suitable for reuse. Transformer oil should be stopped for regeneration and disposal in order to avoid accidents.
  二、若油样油色发暗,其简化剖析中,酸值和水溶性酸均严重超标。普通状况下,油色发暗,则可能为油的老化现象,变压器内部无毛病。
  2. If the oil color is dark, the acid value and water-soluble acid in the simplified analysis are seriously exceeded the standard. Under normal conditions, the dark oil may be the aging phenomenon of oil, and there is no fault inside the transformer.
  三、若油样油色发黑,其简化剖析中,闪点常常接近或低于国际规范请求的极限值。色谱剖析中,氢气和乙炔组分增高也是一重要特征。普通状况下,油色发黑可判别为变压器内部可能存在放电现象或是放电兼过热现象,变压器油因变压器固体介质的炭化而变黑,放电严重时会形成设备烧毁,以至发作爆炸事故。闪点过低也会招致变压器发作火灾,以至爆炸。关于油色发黑,且闪点过低的油应特别惹起留意。
山东变压器油
  3. If the oil sample is oily and black, the flash point in the simplified analysis is often close to or lower than the limit value required by international standards. In chromatographic analysis, the increase of hydrogen and acetylene components is also an important feature. Under normal conditions, oil blackening can be distinguished as discharge phenomenon or discharge and overheating phenomenon in transformer. Transformer oil blackens due to carbonization of solid medium of transformer. When discharge is serious, equipment will be burned down and explosion accident will occur. Low flash point will also cause transformer fire and even explosion. Special attention should be paid to oils with dark color and low flash point.
  四、若油样混浊发白,其简化剖析中,击穿电压的降低和氢气含量的增高是油样混浊发白的两个重要特征。普通状况下,假如油样混浊发白,则很可能是油中含有水分形成的,可大致诊断为变压器油内部进水受潮。这里有一个简易办法来大约得知配电变压器油击穿电压值合格与否,而无需用油的介电强度测定仪来判别。取一只无色透明经过烘干的平底玻璃杯,从变压器底部取样阀中取出少量的油样,使之在玻璃杯中构成7cm高的油柱,在光线充足处,将杯底紧贴报纸,从上望下透过油柱,如能看清6号字,则该油样的击穿电压应在25kV以上。而在10kV配电变压器运转中,绝缘油的击穿电压请求不低于25kV。
  4. If the oil sample is turbid and white, the reduction of breakdown voltage and the increase of hydrogen content are two important characteristics of the simplified analysis. Under normal conditions, if the oil sample is turbid and white, it is likely to be formed by water in the oil, which can be roughly diagnosed as moisture in the transformer oil. Here's a simple way to know about the breakdown voltage of distribution transformer oil, without using the dielectric strength tester to judge. Take a colorless transparent dried flat bottom glass and take a small amount of oil sample from the sampling valve at the bottom of the transformer to form a 7 cm high oil column in the glass. In sufficient light, press the bottom of the glass to the newspaper, and look down through the oil column from the top. If you can see No. 6 clearly, the breakdown voltage of the oil sample should be above 25 kV. In the operation of 10 kV distribution transformer, the breakdown voltage of insulation oil is not less than 25 kV.
  以上所述能够作为对变压器油油质和变压器可能呈现的毛病做出的初步判别。同时可依据其异常状况的不同,明白需求停止的油化学监视实验项目,以对设备毛病及早做出进一步精确的诊断。
  The above can be used as a preliminary judgment for transformer oil quality and possible faults of transformers. At the same time, according to the different abnormal conditions, we can understand the need to stop the oil chemical monitoring experimental project, in order to make further accurate diagnosis of equipment defects as soon as possible.
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