一种光伏阵列电缆接地故障精准定位方法及系统
By performing time-frequency integration processing and soil physical parameter mapping on the grounding fault of photovoltaic array cables, combined with virtual work projection and drawing layout length correction, the dynamic change problem of photovoltaic array cable grounding fault location was solved, and fault location with meter-level accuracy was achieved, improving the reliability and economic benefits of location.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA NAT GENERAL MASCH ENG CORP
- Filing Date
- 2026-04-02
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for locating grounding faults in photovoltaic array cables rely on fixed calculation models that fail to capture the dynamic changes in the grounding process, leading to location deviations and an inability to accurately pinpoint the true location of the fault.
A precise fault location method for photovoltaic array cable grounding is adopted. The original voltage and current signals are acquired, converted into digital sequences, and then processed by time-frequency integration. Combined with soil physical parameters and dynamic mapping relationship, nonlinear aggregation is performed using the partition filling rate operator and virtual work projection relationship. Finally, the scale correction is performed using the layout length of the drawing to achieve precise fault location.
It significantly improves the reliability and accuracy of locating grounding faults in photovoltaic array cables, maintains stability under complex geological conditions, shortens fault response time, and avoids losses caused by blind excavation.
Smart Images
Figure CN121966447B_ABST