Views: 0 Author: Site Editor Publish Time: 2025-07-04 Origin: Site
As critical protection devices in distribution networks, drop-out fuses' operational reliability and interruption accuracy directly impact grid safety. Traditional fuses face challenges including action time deviation and limited fault-type adaptability. This study integrates multi-sensor monitoring, adaptive algorithms, and digital twin technology to achieve dynamic optimization of operation characteristics and precise interruption control.
1. Multi-parameter Sensing System
- Integrated temperature/current/arc sensors with 10ms-level data acquisition
- DL-based fault feature extraction (accuracy ≥98.2%)
2. Precision Interruption Control
- Vacuum interrupter + magnetic arc control
- Action time dispersion reduced from ±15ms to ±2ms
- Arc energy decreased by 40% (Fig 1)
Fig 1: Arc energy comparison between new and traditional fuses
Experimental Validation
Tests on 35kV distribution network simulation platform:
| Fault Type | Traditional Fuse Error | Intelligent Fuse Error |
| Short Circuit | +22%/-18% | +3.5%/-2.8% |
| Overload | ±15% | ±4.1% |
Application Value
1. 80% reduction in false operations
2. Fault location accuracy to pole-level with SCADA
3. ~30% extension of service life
