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针对500 kV气体绝缘开关设备（Gas Insulated Switchgear，GIS）内部特高频电磁波传播过程复杂、局部放电在线监测存在盲区的问题，建立500 kV GIS开关设备三维等比例的电磁波传播仿真模型，对GIS内部特高频电磁波衰减特性进行计算分析。结果表明，500 kV双断口断路器的平均正向传输系数低于单断口断路器，500 kV转角型隔离开关的平均正向传输系数低于直线型隔离开关，且GIS分闸时特高频电磁波会产生额外衰减。
Abstract：In response to the complex propagation process of UHF electromagnetic waves inside 500 kV GIS switchgear and the potential blind spots in partial discharge online monitoring, a three - dimensional proportional electromagnetic wave propagation simulation model of 500 kV GIS switchgear is established to analyze the attenuation characteristics of UHF electromagnetic wave signals inside the GIS switchgear. It is concluded that the average forward transmission coefficient of 500 kV double-break circuit breaker is lower than that of single-break circuit breaker, and the average forward transmission coefficient of 500 kV corner-type disconnector is lower than that of linear-type disconnector. In addition, GIS opening will cause additional attenuation of UHF electromagnetic waves.
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基本信息:
DOI：10.19929/j.cnki.nmgdljs.2024.0070
中图分类号:
引用信息:
[1]张丕沛,郭晨瑞.500 kV气体绝缘开关设备特高频电磁波衰减特性研究[J],2024,42(05):78-84.DOI:10.19929/j.cnki.nmgdljs.2024.0070.
基金信息:
国家电网公司科技项目“基于光纤传像的GIS内部多谱段光学成像关键技术研究”（520626220048）