CAJ | 학술논문

由于O2直接参与SF6过热分解组分的生成过程，而目前有关其作用机制与宏观规律尚不完全清楚，因此亟需了解微量O2对SF6过热分解特性的影响规律，为建立有效的SF6气体绝缘装备过热故障诊断方法提供参考。该文在已有的 SF6过热分解模拟实验系统上，对不同比例的 SF6/O2混合气体进行大量的过热分解实验，获取微量O2对SF6过热分解组分的有效产气速率和特征比值的影响规律，进而研究微量O2对分解组分形成过程的影响机制。结果表明：微量O2对SF6的主要过热分解组分H2S、CO2、SO2F2、SOF2和SO2的有效产气速率均有一定的影响，但影响规律因组分的差异而不同，致使表征局部过热性故障属性的特征分解组分比值因O2含量的不同而发生变化，但二者有较为明显的关联关系。
유우O2직접삼여SF6과열분해조분적생성과정，이목전유관기작용궤제여굉관규률상불완전청초，인차극수료해미량O2대SF6과열분해특성적영향규률，위건립유효적SF6기체절연장비과열고장진단방법제공삼고。해문재이유적 SF6과열분해모의실험계통상，대불동비례적 SF6/O2혼합기체진행대량적과열분해실험，획취미량O2대SF6과열분해조분적유효산기속솔화특정비치적영향규률，진이연구미량O2대분해조분형성과정적영향궤제。결과표명：미량O2대SF6적주요과열분해조분H2S、CO2、SO2F2、SOF2화SO2적유효산기속솔균유일정적영향，단영향규률인조분적차이이불동，치사표정국부과열성고장속성적특정분해조분비치인O2함량적불동이발생변화，단이자유교위명현적관련관계。
As the result of the direct involvement that trace O2 participates in SF6decomposition process under partial overthermal fault, but the corresponding mechanisms and macro-rules are of blank. Hence, it is essential to investigate the influence of trace O2on SF6 overthermal decomposition characteristics and establish the foundation for the effective partial overthermal fault diagnosis method of SF6 gas insulated apparatus. Therefore, a series of overthermal decomposition experiments of different SF6/O2 mixture on the existing simulation system were conducted. Influence rules of trace O2 on effective formation rates and characteristic ratio of decomposition components were achieved. The impact mechanism of trace O2on the formation process of SF6 overthermal decomposition components was analyzed based on the data acquired. The results show that: trace O2has impact on the effective formation rates of SF6 overthermal decomposition components to some extent, such as H2S, CO2, SO2F2, SOF2 as well as SO2. The influence rule of each component is different from others.