In the complex environment of actual substations,in addition to the impact of environmental noise,the gas insulated switchgear(GIS)online monitoring system also receives interference from external partial discharge(PD)signals.To address the current defect that GIS PD online monitoring systems can't identify external PD signals,this paper conduct research on the identification of external PD interference in the GIS,combining the advantages of digital twin technology.It proposes a mechanism for identifying external PD interference in the GIS based on digital twins,establishes an overall digital twin model of the GIS and a signal attenuation component model,and analyzes the ultra-high frequency signal attenuation rate.According to attenuation rate comparisons,it completes the identification of external PD signals,and verifies the effectiveness of the algorithm proposed through simulation experiments.
关键词
数字孪生/抗干扰技术/局部放电/目标识别
Key words
digital twin/anti-interference technology/partial discharge/target identification
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