中文摘要：

CO和CO2是反映油纸绝缘系统绝缘故障的重要特征气体。为了研究并比较不同绝缘组合下油中CO和CO2体积分数φ（CO）、φ（CO2）的变化规律,对^#25变压器油、普通纤维素绝缘纸、BIOTEMP植物绝缘油、Munksjo热稳定纸组成的4种油纸复合绝缘在不同温度下进行约4000h的加速热老化试验,对不同油纸复合绝缘的油中CO、CO2体积分数φ（CO）、φ（CO2）及比值φ（CO2）/φ（CO）随老化时间、绝缘纸聚合度的变化规律进行了研究。结果表明：采用Munksjo热稳定纸的油纸复合绝缘时,进入老化初期（聚合度约830）后,φ（CO2）/φ（CO）可以反映绝缘纸老化程度的变化;采用普通纤维素绝缘纸的油纸复合绝缘时,推荐用进入老化中期（聚合度约600）后的φ（CO2）/φ（CO）来量度老化程度的变化;绝缘纸聚合度与φ（CO2）/φ（CO）变化的关系中,影响φ（CO2）/φ（CO）达到最大值及到达时间的主要因素是纸的类型,而油的类型影响较小;与^#25变压器油进行组合时,若用新型Munksjo热稳定纸替换普通纤维素绝缘纸来提高性能,则现行的用φ（CO2）/φ（CO）判断绝缘系统故障信息的标准需要进行适当调整。

英文摘要：

CO and CO2 are important gases able to reflect insulating problems of oil-paper insulation. In order to research the changing regularities of volume about CO（φ（CO） ） and CO2（φCO2 ） ） , in oil with different insulation compositions, in this paper, four types of oil-paper insulation compositions, which are composed of kraft paper and thermal upgraded transformer paper named Munksjo and ^# 25 mineral oil, Biotemp vegetable oil, are thermally aged for 4000 hours at different temperature respectively. Then the variations of φ（CO2）/φ（ CO） and φ（CO）, φ（CO2） dissolved in oil of those compounds are analyzed. The main conclusions obtained from test results are as follows. The φ（CO2 ）/φ（CO） can reflect the aging extent of the oil paper compounds containing the thermal upgraded paper when these oil-papers were degraded to their early aging stage （the degree of polymerization of paper is less than 830）. It is recommended that the value of φ（CO2 ）/φ（CO） should be used to reflect the aging extent of the oil-paper compounds containing regular paper when these oil-papers were degraded to their middle aging stage （degree of polymerization of paper〈600）. Among the factors influencing the relation between Dp and φ（CO2）/φ（ CO） , the most important one that impacts φ（CO2）/φ（CO） on its maximum value and the time arriving at was the type of paper, the type of oil had a little role on them. The current standard using φ（CO2 ）/φ（CO） to evaluate the aging state of oil paper insulation should be revised reasonably, when the thermal upgraded paper was used to improve the anti-aging performances of the regular oil and paper insulation system.