大截面圆形紧压海缆导体结构设计

Structural Design of Large-Cross-Section Circular Compacted Conductors for Submarine Cables

摘要: 为满足圆形单丝紧压海缆导体结构的设计应用需求，通过计算导体外径、单丝直径、绞合外径、紧压后外径、各层紧压量及单丝数量，设计并优化了630 mm²和1800 mm²的导体结构，测量了两种规格导体的直流电阻。结果表明，630 mm²和1800 mm²导体在20 ℃时的单位长度直流电阻分别为2.81×10⁻⁸、1.008×10⁻⁸ Ω·mm⁻¹，满足标准要求。最后，对圆形单丝紧压导体结构设计与工艺优化进行了展望。

Abstract: To meet design and application requirements of compacted round stranded conductor construction for submarine cables, conductor outer diameter, monofilament diameter, stranded outer diameter, post-compaction outer diameter, compaction reduction per layer, and number of monofilaments were calculated. Conductor structures for 630 mm² and 1800 mm² specifications were designed and optimized, and their DC resistances were measured. Results showed that DC resistances of two conductors at 20 °C were 2.81×10⁻⁸ and 1.008×10⁻⁸ Ω·mm⁻¹ respectively, meeting the standard requirements. Finally, the structural design and process optimization of compacted round stranded conductor were discussed.