Vehicle-mounted cable terminal partial discharge fault anomaly detection method

• Main Authors: GAO GUOQIANG, JIAO SHIBO, NIE GUANGBO, FAN LIKE, CHEN KUI, LIU KAI, GAO BO, WU GUANGNING
• Format: Patent
• Language: Chinese; English
• Published: 05.04.2024
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses a vehicle-mounted cable terminal partial discharge fault anomaly detection method, and the method specifically comprises the steps: directly taking partial discharge signal time sequence data as input, and carrying out the segmentation through a sliding window, thereby forming a single sample; segmenting the sample, determining an adjacency relation and an edge weight matrix according to a similarity index and an adjacent window, and constructing a graph signal; constructing a thermodynamic diagram of node degree centrality to an original partial discharge waveform, and determining the size and step length of a window by judging whether the size of the node degree centrality is in a partial discharge main position or not; a graph self-attention convolution layer is used as a main body, a graph self-adaptive pooling layer is used for extracting global features of partial discharge graph signals, and finally, three-layer full connection is used as a classification layer for outputting th