添加剂对低热下油/纸绝缘体系产气特性的影响

摘要/Abstract

摘要： 为更好地考察运行变压器设备真实的产气特性，在120℃下进行了基础油、抗氧剂DBPC及金属钝化剂Irgamet39对油/纸复合绝缘产气特性的影响。结果表明，油/纸绝缘中产生的溶解气含量受添加剂种类、绝缘油氧化、绝缘纸板降解、绝缘纸板吸附作用等多因素影响；抗氧剂DBPC可通过抑制绝缘油老化使油/纸绝缘中氢气含量和烃类气体含量大幅降低，但同时DBPC也促进绝缘纸板老化产生更多的CO和CO₂气体；金属钝化剂Irgamet39虽然会使油/纸绝缘中产生较高氢气，但与纯油产生的氢气量相比呈现出大幅下降趋势，分析认为是由于绝缘纸板吸附金属钝化剂引起的；Irgamet39可促进绝缘纸板老化，使其产生更多的CO和CO₂气体，但对烃类气体的产生基本无影响。

关键词: 绝缘油, 变压器油, 抗氧剂, 金属钝化剂, 产气特性

Abstract: In order to study the real gassing characteristics of transformers in operation, effects of base oil,antioxidant DBPC and metal deactivator Irgamet39 on stray gassing of oil-paper composite insulation at 120 ℃ were studied. The test results showed that stray gassing of oil-paper was largely influenced by additive types, oil oxidation, insulation pressboard thermal degradation, and insulation pressboard adsorption. Antioxidant DBPC could greatly reduce the content of hydrogen and hydrocarbon gas in oil-paper insulation system by inhibiting the aging of insulating oil. However, DBPC could also promote the aging of insulating paperboard to produce more CO and CO₂. The metal deactivator Irgamet39 produced a higher amount of hydrogen in the oil-paper insulation system, and showed a sharp downward trend, compared with the amount of hydrogen produced by pure oil, which was considered to be caused by the adsorption of metal deactivator on the insulation board. At the same time, Irgamet 39 could promote the pressboard aging leading to more CO and CO₂, while Irgamet39 made no obvious influence on hydrocarbon gas.

Key words: insulation oil, transformer oil, antioxidant, metal deactivator, gassing characteristics

王会娟李盛涛陈华马书杰于会民张昱邱冬. 添加剂对低热下油/纸绝缘体系产气特性的影响[J]. 石油炼制与化工, 2021, 52(2): 85-91.

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