刘云鹏;费烨;陈江波;程林;李梦齐;刘诣;邵苠峰;

• 1:华北电力大学电气与电子工程学院
• 2:中国电力科学研究院有限公司
• 3:国网电力科学研究院武汉南瑞有限责任公司

摘要(Abstract)：

苏通气体绝缘金属封闭输电线路(gas-insulated transmissionline,GIL)综合管廊工程单相GIL长度接近5.8 km,在运行过程中一旦发生内部击穿将会对电网安全运行造成极大隐患,超声波原理故障定位方法可以快速和准确查找故障位置以便开展检修更换,难点在于超声波在特高压GIL上传输衰减特性及传感器的布置方法,其决定了故障定位的精度。为达到苏通工程故障定位到GIL气室的要求,研究了超声波在特高压GIL中衰减特性,开展了特高压GIL故障模拟试验和真型故障定位试验,获得了超声波经过特高压GIL直线单元、气隔盆子和伸缩节的衰减规律,得到了苏通工程GIL单个气室直线单元传感器布置方法,并对后续研究工作提供了一定建议。研究结果表明,超声波经GIL直线单元36 m传播后衰减约60%,经气隔盆子和伸缩节衰减约70%和89%,苏通工程单个气室布置2～3个超声波传感器即可达到故障定位到气室的精度要求。

关键词(KeyWords)： UHV;GIL;超声波;苏通工程;故障定位

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目(2017YFB0902500);; 国家电网有限公司科技项目(GYW11201801543; GYW11201605592)~~

作者(Author): 刘云鹏;费烨;陈江波;程林;李梦齐;刘诣;邵苠峰;

Email:

DOI: 10.13335/j.1000-3673.pst.2019.2301

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