变压器油介损超标的原因! - 山东变压器油哪家好

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变压器油介损超标的原因!

发布时间2019-05-16  来源:众彩彩票注册http://www.wunqdctk.com

        变压器在装置过程中油品或固体绝缘资料中存在着尘埃等杂质,运转一段时间后,胶体杂质慢慢析出。变压器胶体粒子直径很小(普通为 10-gin~10 m),扩散慢,但有一定的活动能量。粒子可自动聚结,由小变大,为粗分散系,处于非均衡的 不稳定状态,当超出胶体范围时,变压器因重力作用而堆积。油中存在溶胶后,沉淀物超越0.02%时,便可能惹起电导超越介质正常电导的几倍或几十倍,从而招致介损值增大。
  There are dust and other impurities in oil or solid insulation data of transformer during the process of installation. After a period of operation, colloidal impurities gradually precipitate. The diameter of colloidal particles in transformer is very small (usually 10-gin~10 m), which diffuses slowly, but has certain active energy. Particles can coalesce automatically, from small to large, and become coarse dispersed system. It is in an unbalanced and unstable state. When it exceeds the colloid range, transformers accumulate due to gravity. When the precipitate exceeds 0.02% after the presence of sol in the oil, the conductivity may exceed several or several dozen times of the normal conductivity of the medium, thus causing the dielectric loss value to increase.
  变压器构造
  Transformer structure
  变压器从变压器制造构造上剖析,目前有的变压器制造厂家从变压器减少渗漏油角度思索取消了净油器(热虹吸器),对变压器油介质损耗因数的增大有一定的影响。假如变压器上变压器装有净油器有利于绝缘油质量的稳定,能够在变压器运转过程中“吸出”绝缘内部水分,改善绝缘的电气性能,从而减缓了绝缘中水分的增加。
  The transformer manufacturing structure is analyzed. At present, some transformer manufacturers think about eliminating oil purifier (thermal siphon) from the angle of reducing oil leakage of transformer, which has a certain influence on the increase of dielectric loss factor of transformer oil. If the transformer on the transformer is equipped with oil purifier, the quality of insulating oil will be stable. It can "absorb" the moisture in the insulation during the operation of the transformer and improve the electrical performance of the insulation, thus slowing down the increase of moisture in the insulation.
  微生物污染
  Microbial contamination
山东变压器油
  变压器微生物细菌感染主要是在装置和大修中细菌类生物浸入所形成的。变压器由于污染所致,在油中含有水、空气、炭化物、有机物、各种矿物质及微量元素,因此构成了菌类生物生长代谢和繁衍的根底条件。由于微生物都含有丰厚的蛋白质其自身就有胶体性质,因而微生物对油的污染实践是一种微生物胶体的污染,而微生变压器物胶体都带有电荷,使油的电导增大,所以电导损耗也增大。变压器油处在全密封、缺氧和无光的器身中,油中存在的微生物厌氧和厌光。对放置较长时间后停止介变压器损测试,特别是在无色透明玻璃瓶中放置的,其介损值会变小。变压器在不同时期内所带负载不同、运转油温不同,微生物在不同温度下繁衍速度也不同,油温在50℃~70℃范围内运转,繁衍速度最快,所以介损相对增加较快。故温度对油中微生物的生长及油的性能影响很大,普通冬季的介质损耗因数比拟稳定。
  Transformer microbial bacterial infection is mainly caused by bacterial biological immersion during installation and overhaul. Transformers contain water, air, carbons, organic matter, minerals and trace elements in oil due to pollution, thus constituting the basic conditions for the growth, metabolism and reproduction of fungi. Because microorganisms contain abundant proteins and have colloidal properties, the practice of microbial contamination of oil is a kind of microbial colloidal contamination. The colloids of microbial transformers are charged, which increases the conductivity of oil, so the conductivity loss increases. Transformer oil is in fully sealed, anoxic and matte body, microbial anaerobic and anaerobic in oil. When dielectric transformer loss test is stopped after a long time, especially when it is placed in colorless transparent glass bottle, its dielectric loss value will decrease. Transformers have different loads and operating oil temperatures in different periods, and microorganisms multiply at different temperatures. Oil temperature runs in the range of 50 ~70 ~C. The propagation speed is the fastest, so the dielectric loss increases relatively fast. Therefore, temperature has a great influence on the growth of microorganisms in oil and the performance of oil. The dielectric loss factor in winter is comparatively stable.
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