태양열 농장 배선 사례 연구: 25-극한의 기후에서의 내구성
Introduction
Solar farms are expanding into deserts, 동토대, 그리고 다른 가혹한 환경. 그러나 배선은 무엇입니까? 특히 매일 UV에 직면하는 DC 케이블 하네스, 모래, 서리, 그리고 수십 년 동안 기계적 변형? A solar farm in the Atacama Desert, Chile, has proven that proper harness engineering can deliver 25+ years of performance in one of Earth¡¯s harshest climates.
Project Overview
Location: Atacama Desert, Northern Chile
Scale: 1.2 GW capacity, 4 million panels
Climate: UV index of 11+, temperature swings of -5¡ãC to 45¡ãC
Wiring Scope: 9 million meters of DC cable and over 300,000 harness connections
Harness Design for Durability
1. Material Selection
Cross-linked polyethylene (xlpe) insulation for UV and thermal resistance
Tinned copper to resist corrosion from sand and salt-laden air
Flame-retardant outer sheathing to meet IEC 62930 표준
2. Layout Optimization
Horizontal routing on cable trays to avoid thermal pooling
Looping allowances for expansion/contraction due to daily heat cycles
3. Connectors and Terminations
IP68-rated MC4 equivalents with 25-year certification
Double crimping and over-molded stress relief points
Installation Techniques
Preassembled wire harness kits reduced installation labor and minimized open-air cable exposure
Cable elevation to prevent ground abrasion from wind-blown sand
Performance After 10 Years
Resistance readings showed <3% deviation from factory specs
No insulation cracking or terminal corrosion observed
Maintenance logs show only 0.02% failure rate in harness-connected modules
Sustainability Considerations
Harnesses are designed for disassembly and material recycling at end-of-life
Recovered copper and polymer insulation can be reused for future solar installations
Conclusion
The Atacama case study proves that when properly engineered, solar wiring systems can meet¡ªand exceed¡ªthe 25-year lifespan required by financiers and regulators. For solar developers and EPCs, investing in high-quality wire harnesses is not a luxury¡ªit¡¯s a safeguard for long-term ROI.