Field Rapid-Installation Technology for Prefabricated Cable Accessories And Anti-Termite/Bioerosion Protection System

Introduction

As power grid construction extends into complex environments, field installation efficiency and long-term reliability of cable accessories face critical challenges. 

This study addresses two key pain points: modular rapid-installation processes and multi-level biological protection, significantly enhancing construction quality and service life.

1. Innovative Rapid-Installation Technology

1.1 Core Design Optimization

Modular Pre-assembled Structure: Integrated stress cone/semiconductor layer reduces field assembly steps by 80%.  

Smart Alignment System: Laser-guided slots and color codes ensure cable cutting accuracy (≤0.5mm error).  

1.2 4-Step Installation Process

1.3 Key Benefits

70% time reduction (e.g., 110kV joint installation: 4h → 75min)  

Torque-limiting wrench (25N·m preset) prevents mechanical damage  

2. Integrated Anti-Termite/Bioerosion Protection 

2.1 Bioerosion Mecanism  

- Termites: Formic acid dissolution of silicone rubber  

- Microorganisms: Enzyme degradation of polymer chains  

2.2 Triple-Layer Protection 

After 3000h under tropical conditions (40°C/95%RH):  

- Protected samples: Zero biological adhesion, tensile strength retention >92%  

- Control group: Significant mildew & pitting (depth 1.2mm)  

3. Field Application  

312 sets deployed in Hainan rainforest transmission project (2024):  

- Efficiency: Daily installation rate increased by 240%  

- Reliability: Zero bioerosion failure in 18 months (vs. 6.7% conventional failure rate)  

Conclusion

This integrated approach resolves field efficiency and long-term protection challenges. Future work will develop AI-assisted installation systems to advance smart grid construction.