基于局部放电特征的电机定子搭线故障智能识别方法
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- QINGDAO YIDI ELECTRONICS CO LTD
- Filing Date
- 2026-04-21
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are difficult to effectively distinguish between metallic wire contact faults and air corona discharge in motor stator winding tests, and are easily affected by power grid fluctuations, resulting in low identification accuracy and poor stability.
By applying AC high voltage to the stator winding of the motor, partial discharge pulses, instantaneous voltage signals and phase signals are obtained. The analysis window is dynamically divided, and the voltage dynamic distribution entropy, waveform steepness index and stability score are calculated. The fault state is finally determined by combining the weighted combination.
It improves the sensitivity of identifying metallic wire faults in dynamic environments, reduces false alarms, and provides more robust insulation condition monitoring.
Smart Images
Figure CN122072316B_ABST