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变压器油为什么要进行过滤?

来源:https://www.jnwdsh.com/ 日期:2020-06-30 发布人:woduanshihua
  变压器油是油浸变压器的主要绝缘、冷却介质,其电气强度和化学成分的好坏,直接影响变压器的性能。 如果油中含有少量水分和杂质,就会使绝缘强度下降;且油与氧气接触,在高温下容易氧化而变质。因此,变压器安装时要进行变压器油过滤。
  Transformer oil is the main insulation and cooling medium of oil immersed transformer. Its electrical strength and chemical composition directly affect the performance of transformer. If the oil contains a small amount of moisture and impurities, the insulation strength will be reduced; and the oil contacts with oxygen, it is easy to oxidize and deteriorate at high temperature. Therefore, the transformer should be installed for oil filtration.
  防止油质变坏而致使的安全运行受到的影响,应对正常运行的配电定期采油样进行化验分析,根据分析的结果对油进行相关处理。配电运行油化学监督的检验周期规定为至少3年一次。下面山东变压器油给大家说一下需要注意的要点!
  In order to prevent the safety operation from being affected by the deterioration of oil quality, it is necessary to carry out laboratory analysis on regular oil production samples of power distribution in normal operation, and carry out relevant treatment for oil according to the analysis results. The inspection cycle of the chemical supervision of distribution operation oil shall be at least once every 3 years. The following Shandong transformer oil to you to say the need to pay attention to the main points!
                 山东变压器油
  1.酸值
  1. Acid value
  酸值是表示油中含有酸性物质的数量,中和1g油中的酸性物质所需的氢氧化钾的毫克数称为酸值。酸值包括油中所含有机酸和无机酸,但在大多数情况下,油中不含无机酸。因此,油酸值实际上代表油中有机酸的含量。新油所含有机酸主要为环浣酸。在贮存和使用过程中,油因氧化而生成的有机酸为脂肪酸。酸值对于新油来说是精制程度的一种标志,对于运行油来说,则是油质老化程度的一种标志,是判定油品是否能继续使用的重要指标之一。
  Acid value is the amount of acid in the oil. The mg of potassium hydroxide required to neutralize 1 g of acid in oil is called acid value. The acid value includes both organic and inorganic acids in the oil, but in most cases, there is no inorganic acid in the oil. Therefore, the oleic acid number actually represents the content of organic acids in the oil. The main organic acid in the new oil is cyclonic acid. In the process of storage and use, the organic acids produced by oil oxidation are fatty acids. Acid value is a sign of refining degree for new oil and aging degree for running oil. It is also one of the important indexes to judge whether the oil can be used continuously.
  2.水溶性酸
  2. Water soluble acid
  其超极限值为小于4.2。超出极限值的可能原因有2种:油质老化;油被污染。对水溶性酸超出极限值可采取如下对策:增加试验次数,并与酸值比较查明原因。进行油的再生处理,若经济合理可做换油处理。
  The over limit value is less than 4.2. There are two possible reasons for exceeding the limit value: oil aging and oil contamination. The following countermeasures can be taken for the water-soluble acid exceeding the limit value: increase the test times, and compare with the acid value to find out the reason. Carry out oil regeneration treatment. If it is economical and reasonable, it can be replaced.
  3.击穿电压
  3. Breakdown voltage
  其超极限值为小于20KV。超出极限值的可能原因有2种:油中含水量过大;油中有杂质颗粒污染。对击穿电压超出极限值可采取如下对策:查明原因,进行真空滤油处理、板框压力式滤油机处理或更换新油。一般选用ZJB真空滤油处理后油的击穿电压要求大于50KV。
  The over limit value is less than 20kV. There are two possible reasons for exceeding the limit value: the water content in the oil is too high; there are impurity particles in the oil. For the breakdown voltage exceeding the limit value, the following countermeasures can be taken: find out the cause, carry out vacuum oil filtration treatment, plate and frame pressure oil filter treatment or replace new oil. Generally, zjb vacuum oil filter is selected, and the breakdown voltage of oil after treatment is required to be greater than 50kV.
  4.闪点
  4. Flash point
  其超极限值为小于130℃。或者比前次试验值下降5℃。超出极限值的可能原因有2种:设备存在局部过热故障;补错了油。对闪点超出极限值可采取如下对策:查明原因,消除故障;进行真空滤油机脱气处理,或进行换油处理。
  The over limit value is less than 130 ℃. Or 5 ℃ lower than the previous test value. There are two possible reasons for exceeding the limit value: local overheating fault of the equipment; wrong oil supplement. The following countermeasures can be taken for the flash point exceeding the limit value: find out the cause and eliminate the fault; degassing the vacuum oil filter or changing the oil.
  5.外状
  5. External shape
  如果外观目测油不透明,有可见杂质或悬浮物。或油色太深,则为油外观异常。外观异常的可能原因有:油中含有水分、纤维、碳黑及其它固体物。对外观异常的油应采取以下对策:若油模糊不清、浑浊发白,表明油中含有水分,应检查含水量。若发现油中含有碳颗粒,油色发黑,甚至有焦臭味,则可能是内部存在有电弧或局部放电故障,应与其它试验结合,调查原因,排除故障。若油色发暗,而且油的颜色有明显改变,则应注意油的老化是否加速,可结合油的酸值试验分析,或加强油的运行温度的监控。
  If the oil is opaque by visual inspection, there are visible impurities or suspended solids. Or oil color is too deep, oil appearance is abnormal. The possible causes of abnormal appearance are: moisture, fiber, carbon black and other solids in the oil. For the oil with abnormal appearance, the following countermeasures should be taken: if the oil is fuzzy, turbid and white, indicating that the oil contains water, the water content should be checked. If it is found that the oil contains carbon particles, the oil color is black, and even has a burnt smell, it may be that there is an arc or partial discharge fault inside the oil. It should be combined with other tests to investigate the cause and eliminate the fault. If the color of the oil is dark and the color of the oil changes obviously, it is necessary to pay attention to whether the aging of the oil is accelerated. It can be combined with the acid value test and analysis of the oil, or strengthen the monitoring of the operating temperature of the oil.
  以上是关于变压器油为什么过滤的详细介绍,想要了解更多内容欢迎点击山东变压器油https://www.jnwdsh.com官方网站。
  The above is a detailed introduction of why transformer oil is filtered. If you want to know more, please click Shandong transformer oil https://www.jnwdsh.com Official website.

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