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你知道怎样评估变压器油的使用年限吗?

变压器油抗氧化性能的好坏可直接影响到油品的使用寿命。
The oxidation resistance of transformer oil can directly affect the service life of oil products.
为了评估运行中变压器油的剩余使用寿命,在100℃、110℃和120℃温度下分别对新变压器油和运行变压器油样品进行氧化安定性试验,检测出它们在不同温度下的诱导期,然后利用诱导期对运行中的变压器油剩余使用寿命进行评估。
In order to evaluate the remaining service life of transformer oil in operation, oxidation stability tests of new transformer oil and running transformer oil samples were carried out at 100, 110 and 120 C, respectively, and their induction periods at different temperatures were detected. Then the remaining service life of transformer oil in operation was evaluated by induction periods. Estimate.
测定油水之间的界面张力也是检查变压器油中含有因老化而产生的可溶性极性杂质的一种间接有效的方法,是检测变压器油油品早期氧化的一种手段,故在100℃、110℃和120℃温度下分别对新变压器油和运行变压器油样品进行开口杯老化试验,并定期测定各老化油样的界面张力,根据测得的试验结果可以从另一方面对油品剩余使用寿命进行评估。
山东变压器油
Measuring the interfacial tension between oil and water is also an indirect and effective method to check the soluble polar impurities in transformer oil caused by aging. It is a means to detect the early oxidation of transformer oil. Therefore, the samples of new transformer oil and running transformer oil are opened at 100 C, 110 C and 120 C, respectively. The interfacial tension of each aging oil sample is measured regularly by cup aging test, and the remaining service life of the oil product can be evaluated on the other hand.
纯净变压器油的电气强度达到200一250kV/cm,比空气高4-7倍。变压器油作绝缘可大大缩小变压器的体积。由于纸和纸板的原料很丰富、价格较便宜、机械强度尚好,浸入变压器油后电气强度高,当变压器油被击穿以后,绝缘可以恢复,不会留下永久性的放电通道,因此变压器油得到了广泛的应用。
The electrical strength of pure transformer oil is 200 250kV/cm, 4-7 times higher than that of air. Transformer oil can greatly reduce the volume of transformer. Transformer oil is widely used because of its abundant raw materials, low price, good mechanical strength and high electrical strength after being immersed in transformer oil. When transformer oil is broken down, insulation can be restored without leaving permanent discharge channel.
变压器油绝缘强度高,在电气设备中主要作绝缘介质使用,又因比热容较大,故也作冷却介质,在断路器和有载分接开关及起动补偿器中作熄弧介质使用和起冷却触头作用。
Transformer oil has high insulation strength and is mainly used as insulation medium in electrical equipment. It is also used as cooling medium because of its large specific heat capacity. It is used as arc quenching medium in circuit breakers, on-load tap changers and starter compensators and plays a role of cooling contacts.
在高压电缆中,变压器油起填充、浸渍的作用,以清除电缆内部的气体,提高电气强度。在油浸纸介电容器中,变压器油起填充、浸溃、绝缘的作用,以提高电容量和绝缘强度。
In high-voltage cables, transformer oil fills and impregnates the cables to remove gases and improve electrical strength. In oil-immersed paper dielectric capacitors, transformer oil plays the role of filling, collapsing and insulation, so as to improve the capacitance and insulation strength.
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