摘要
国际大电气研究会议(CIGRE)的统计数据表明,SF_(6)气体绝缘设备运行可靠性较高,但实际运行中高电压等级SF_(6)气体绝缘设备的故障率远高于IEC标准。受限于SF_(6)气体绝缘设备复杂的金属全封闭结构以及运行中强烈的电磁干扰,如何对SF_(6)气体绝缘设备运行状态进行有效、准确的监测,仍是目前面临的一大技术挑战。在设备早期潜伏绝缘故障引起的局部强电磁能和高温的作用下,SF_(6)气体出现不同程度的分解,分解产物主要包括SO_(2)F_(2)、SOF_(2)、SO_(2)、H_(2)S和CO_(2)、CF_(4)等。基于SF_(6)故障分解组分特性提取反映故障属性的组分特征量,并建立有效的故障诊断方法,是SF_(6)气体绝缘设备绝缘状态监测的一项有效技术手段,这一领域正引起电力行业和科研院所的广泛关注。其中,提高SF_(6)故障分解组分检测速度、灵敏度和抗干扰性,是业内学者正竭力攻克的关键难题,并在近期取得了一系列突破性的研究进展。文中总结了基于故障分解组分的SF_(6)气体绝缘设备故障诊断方法的研究进展,重点介绍了SF_(6)分解组分光学检测与化学传感检测研究的突破性成果,并对该技术在应用过程中需要重点解决的难题进行了归纳和总结。
Statistics from the International Conference on Electrical Research(CIGRE)show that SF_(6) gas-insulated equipment has high operational reliability,whereas the failure rate of SF_(6) gas-insulated equipment in operation is much higher than that of the IEC standard.Limited by the complex metal fully enclosed structure of SF_(6) gas-insulated equip-ment and strong electromagnetic interference during operation,it is still a major technical challenge to effectively and accurately monitor the operating status of SF_(6) gas-insulated equipment.Due to the partial strong electromagnetic energy and high temperature caused by latent insulation failure in the early stage of the equipment,SF_(6) gas insulation presents different degrees of decomposition,and the decomposition products mainly include SO_(2)F_(2),SOF_(2),SO_(2),H_(2)S,CO_(2),CF_(4),etc.Extracting the component characteristics reflecting the fault attributes based on the characteristics of SF_(6) fault decomposi-tion components and establishing an effective fault diagnosis method are effective technical means for monitoring the insulation condition of SF_(6) gas-insulated equipment,which is attracting widespread attention from the power industry and scientific research institutes.Among them,improving the detection speed,sensitivity and anti-interference of SF_(6) fault decomposition components is a key problem that industry scholars are trying to overcome,and a series of groundbreaking research progress have been made recently.This paper summarizes the research progress of fault diagnosis method of SF_(6) gas-insulated equipment based on fault decomposition components,focuses on the breakthrough results of optical detec-tion and chemical sensing detection of SF_(6) decomposition components,and summarizes the difficulties that need to be solved in the application of this technology.
作者
曾福平
朱可馨
冯孝轩
程宏图
李昊天
姚强
唐炬
ZENG Fuping;ZHU Kexin;FENG Xiaoxuan;CHENG Hongtu;LI Haotian;YAO Qiang;TANG Ju(State Key Laboratory of Power Grid Environmental Protection,School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China;State Grid Chongqing Electric Power Company Electric Power Research Institute,Chongqing 401123,China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2023年第8期3240-3257,共18页
High Voltage Engineering
基金
国家自然科学基金(52277161)
湖北省杰出青年科学基金(2020CFA097)。
关键词
SF_(6)
故障分解
组分检测
化学传感
光学传感
SF_(6)
fault decomposition
components detection
chemical sensing
optical detection
