Composite modified nano particle transformer oil, and preparation method thereof

Abstract

The invention relates to a composite modified nano particle transformer oil, and a preparation method thereof. The composite modified nano particle transformer oil is prepared from, by weight, 0.1 to 1.5% of hydrophobic nano SiO2, 1 to 2% of nano Al2O3, and 10% of an additive mother liquor; the additive mother liquor is prepared from 0.1 to 0.5% of butyl hydroxy anisd (BHA), 0.2 to 0.5% of butylated hydroxytoluene (BHT), 0.05 to 1% of tertiary butylhydroquinone (TBHQ), and 0.3 to 2% of dodecenyl succinic anhydride; and the composite modified nano particle transformer oil with excellent aging resistance and thermal conductivity are obtained via intense mechanism agitation. According to the prepared method, modified nano SiO2 and Al2O3 nano particles are added, so that insulating properties, thermal conductivity, and stability of the composite modified nano particle transformer oil are better than that of pure transformer oil; rust resistance, and aging resistance are better; equipment is simple; operation is convenient; and large-scale production can be realized.

Description

technical field [0001] The invention relates to the fields of electricity and chemistry, in particular to a composite modified nano particle transformer oil and a preparation method thereof. Background technique [0002] At present, most large-scale power transformers are oil-immersed power transformers. The main functions of transformer oil include insulation, heat dissipation and arc suppression. Therefore, the heat dissipation and insulation performance of transformer oil play an important role in the long-term safety and reliability of transformer to a decisive role. During the storage, transportation and operation of transformer oil, under the action of factors such as heat, oxygen, electric arc, light, electromagnetic field, radiation, and catalysts such as copper and iron, chemical reactions such as slow oxidation, cracking and carbonization will occur, forming Some oxides and their condensates (sludge) produce hydrogen, low molecular hydrocarbon gases and solid X wa...

AI Technical Summary

Problems solved by technology

The aging of transformer oil often causes the increase of hygroscopicity, or the water content in the insulating medium increases due to the decomposition and oxidation of the insulating medium, which leads to the decline of the overall insulation performance of the transformer, and the cooling and heat dissipation effects are greatly weakened.

Aging often also produces sludge to block the transformer oil circulation channel, which makes the local temperature of the transformer oil too high, further accelerates the aging of the internal parts of the transformer and the insulating medium, and generates more debris such as micro water, gas and particles to penetrate into the oil. The above factors lead to The service life of insulating media such as transformer oil and equipment is shortened, and the probability of major insulation accidents increases