基于气体组分分析的GIS金属性过热故障程度图像化判别方法
投稿时间:2022-08-02  修订日期:2022-09-08  点此下载全文
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康宁 国网新疆电力有限公司乌鲁木齐供电公司 830011
董宏宇 国网新疆电力有限公司乌鲁木齐供电公司 
缪刚 国网新疆电力有限公司乌鲁木齐供电公司 
塔伊尔江.巴合依 国网新疆电力有限公司乌鲁木齐供电公司 
卡里哈尔.安尼万别克 国网新疆电力有限公司乌鲁木齐供电公司 
曾红刚 国网新疆电力有限公司乌鲁木齐供电公司 
钟理鹏 湖南大学电气与信息工程学院 
胡玉柱 湖南大学电气与信息工程学院 410082
中文摘要:SF6气体绝缘设备在电力系统中使用广泛,设备运行过程中的过热故障会威胁其安全,有必要开展故障程度判断研究。本文研究了不通程度过热故障下的SF6气体分解特性,分析了加热时间及气压对SF6分解产物的影响。结果显示:过热条件下的分解产物主要有CO、CO2、SO2、SOF2、SO2F2、COS、H2S;产物含量随温度、气压呈增长趋势,气体含量大小结果满足:SO2>SOF2>SO2F2>CO2>CO>H2S>COS;基于特征比值的思想构建了以SO2、(SOF2+CO)和(SO2F2+H2S+CO2)为含量比值的三角诊断方法,可实现对金属性过热故障严重程度的有效判断。
中文关键词:SF6  金属性  过热  三角诊断
 
Pictorial discrimination of metallic overheating fault degree in GIS based on gas component analysis
Abstract:SF6 gas-insulated equipment is widely used in power systems, and overheating faults during equipment operation can threaten their safety, necessitating research on fault level determination. In this paper, the SF6 gas decomposition characteristics under inaccessible overheating fault are studied, and the effects of heating time and barometric pressure on SF6 decomposition products are analyzed. The results show that the decomposition products under superheat conditions are mainly CO, CO2, SO2, SOF2, SO2F2, COS and H2S; the product content shows an increasing trend with temperature and barometric pressure, and the gas content size results satisfy: SO2>SOF2>SO2F2>CO2>CO>H2S>COS; a triangular diagnosis method with SO2, (SOF2+CO) and (SO2F2+H2S+CO2) as content ratios is constructed based on the idea of characteristic ratio, which can realize an effective judgment of the severity of metallic overheating faults.
keywords:SF6  metallicity  overheating  Triangle diagnosis
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