February 13, 2026 — Beijing Xingye Jianda Electric Co., Ltd. has filed a patent titled “An Intelligent-Sensor-Based Arc Fault Diagnosis System for High-Voltage Switchgear” under publication number CN121254058A, with a filing date of November 2025.
According to the abstract, the invention relates to the field of switchgear arc fault diagnosis, and in particular to an intelligent-sensor-based arc fault diagnosis system for high-voltage switchgear, comprising:
- Sensor data encoding and fusion module: time-series data collected from arc-light sensors, current sensors and ultrasonic sensors of the HV switchgear is processed through multi-scale wavelet transform to generate an encoding matrix
- Arc feature extraction module: the encoding matrix is fed into an arc feature extraction backbone network based on conditional parametric convolution and an attention mechanism to generate arc feature vectors
- Fault cause classification module: a fault cause classification head generates the cause of the arc fault
- Fault trend prediction module: a fault trend regression head generates the predicted arc fault trend
- Fault diagnosis and warning module: manages arc fault diagnosis and alerts
The invention adaptively focuses on arc fault features and outputs both diagnosed faults and predicted fault trends, ensuring stable diagnosis of arc faults in high-voltage switchgear.