CAJ | 학술논문

研究吸附剂对在局部放电下SF6分解组分的影响是探究利用分解组分诊断 SF6电气设备内部早期绝缘缺陷的重要内容。为此，在建立的特定吸附实验研究平台上，选用SF6电气设备中最常用的活性氧化铝和kdhF-03型分子筛吸附剂，对局部放电(partial discharge，PD)下产生的4种SF6稳定分解特征组分(CF4、CO2、SO2F2和SOF2)进行吸收特性研究，利用气相色谱仪和质谱联用仪定时检测气室内气体残余量，结合吸附量和等温吸附线对吸附机制和作用过程进行了深入分析。结果表明：两种吸附剂几乎不吸附 CF4，对CO2略有吸附，但对SO2F2和SOF2有较强的吸附能力，吸附量由多到少依次为SOF2>SO2F2>CO2>CF4。因此，在利用特征组分含量及变化规律辨识 SF6气体绝缘设备的绝缘缺陷时，必须考虑吸附剂的影响。实验也发现选用SOF2+SO2整体作为辨识 SF6设备内部绝缘缺陷的一种特征组分更有效。
연구흡부제대재국부방전하SF6분해조분적영향시탐구이용분해조분진단 SF6전기설비내부조기절연결함적중요내용。위차，재건립적특정흡부실험연구평태상，선용SF6전기설비중최상용적활성양화려화kdhF-03형분자사흡부제，대국부방전(partial discharge，PD)하산생적4충SF6은정분해특정조분(CF4、CO2、SO2F2화SOF2)진행흡수특성연구，이용기상색보의화질보련용의정시검측기실내기체잔여량，결합흡부량화등온흡부선대흡부궤제화작용과정진행료심입분석。결과표명：량충흡부제궤호불흡부 CF4，대CO2략유흡부，단대SO2F2화SOF2유교강적흡부능력，흡부량유다도소의차위SOF2>SO2F2>CO2>CF4。인차，재이용특정조분함량급변화규률변식 SF6기체절연설비적절연결함시，필수고필흡부제적영향。실험야발현선용SOF2+SO2정체작위변식 SF6설비내부절연결함적일충특정조분경유효。
As the decomposition products of SF6 could be affected by the absorbent, it is important to study this kind of influence before we use the decomposition products of SF6 to diagnose faults in SF6 electrical equipment. Two kinds of absorbents were widely used in power apparatus, namely activated alumina and molecular sieve kdhF-03, were chosen as the samples. The absorption characteristics of this two absorbents on the four stable decomposition products of SF6, namely CF4, CO2, SO2F2 and SOF2, were investigated based on our adsorption experiment platform. The concentration of the decomposition products was detected by a gas chromatograph and a gas chromatograph-mass spectrometer. And then the adsorption mechanism and reaction process of the two absorbent were analyzed based on the adsorption capacity and adsorption isotherms. The results show that the two kinds of adsorbents hardly adsorb CF4, and slightly adsorb CO2, but have strong adsorption ability on SO2F2 and SOF2. The adsorption capacity in decreasing order is SOF2>SO2F2>CO2>CF4. Therefore, the influence of absorbent cannot be ignored when to diagnose the fault in SF6 electrical equipment by decomposition products of SF6. The study also suggests that it is more effective to choose the total concentration of SOF2+SO2 as the feature parameter to recognize internal insulation defects in SF6 electrical equipment.