气体绝缘开关内部固体绝缘件缺陷产气特性

发布时间：2018-11-17 16:19

【摘要】：为了研究固体绝缘件是否参与放电、加压时间、电极材料等因素对SF6分解气体组分及产气速率的影响,采用脉冲电流法测量GIS设备内不同绝缘缺陷在相同累积局部放电量下240 h内产气特性变化规律,分析了不同绝缘缺陷分解产物φ(SOF2+SO2)/φ(SO2F2)、φ(CO2+CO)/φ(CF4)和φ(CF4+CO+CO2)/φ(SOF2+SO2+SO2F2)3组组分体积分数比值的数值特征。研究结果表明:电极材料影响到CO2、CO的生成量,相同缺陷类型时,铁电极CO2、CO产气量大于铜电极材料;当放电涉及到固体绝缘时,无论电极材料是铁丝或是铜丝,其φ(SOF2+SO2)/φ(SO2F2)的值均高于母线电晕放电缺陷;φ(CO2+CO)/φ(CF4)的范围一般均在2~5之间;φ(CF4+CO+CO2)/φ(SOF2+SO2+SO2F2)的值均低于母线电晕放电缺陷。
[Abstract]:In order to study the effects of solid insulating parts on the decomposition gas composition and gas production rate of SF6, such factors as discharge, pressure time, electrode material, etc. The variation of gas production characteristics of different insulation defects in GIS equipment within 240 h under the same cumulative partial discharge was measured by pulse current method. The decomposition products 蠁 (SOF2 SO2) / 蠁 (SO2F2) of different insulation defects were analyzed. Numerical characteristics of fraction integral number ratios of 蠁 (CO2 CO) / 蠁 (CF4) and 蠁 (CF4 CO CO2) / 蠁 (SOF2 SO2 SO2F2). The results show that the amount of CO2,CO is affected by electrode material, and the gas production of iron electrode CO2,CO is larger than that of copper electrode material when the same defect type is found. When the discharge involves solid insulation, the values of 蠁 (SOF2 SO2) / 蠁 (SO2F2) are higher than those of busbar corona discharge defects, and the range of 蠁 (CO2 CO) / 蠁 (CF4) is generally between 2 and 5, regardless of whether the electrode material is iron wire or copper wire, the ratio of 蠁 (SOF2 SO2) / 蠁 (SO2F2) is higher than that of busbar corona discharge defect. The values of 蠁 (CF4 CO CO2) / 蠁 (SOF2 SO2 SO2F2) are lower than those of busbar corona discharge defects.
【作者单位】：华北电力科学研究院有限责任公司;国网冀北电力科学研究院有限责任公司;
【基金】：国家电网公司科技项目(8KE000M13008)~~
【分类号】：TM595

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