海南联网工程牛皮纸绝缘和 PPL 纸绝缘 充油海底电缆技术经济比较

Technical and Economical Comparison of Submarine Oil － filled Cables with Kraft Paper and PPL Paper Insulation in Hainan Interconnection Project

摘要:

目前，500 kV 交流自容式充油海底电缆绝缘材料主要有两种型式: 牛皮纸绝缘和 PPL 纸绝缘［1］。由于两者造 价、绝缘性能、介质损耗性能均有较大差异，工程应用应综合初始投资、年运行费用、应用经验和安全稳定性等多方面 因素进行选择。以海南联网工程为例，介绍上述两种绝缘材料的性能和差异，并结合不同电缆铠装型式、回流导体结 构、无功补偿投入等，进行综合技术经济比较，最终得出对工程建设有指导意义的结论。

关键词:海南联网; 自容式充油海底电缆; 牛皮纸绝缘; PPL 纸绝缘; 损耗; 技术经济性

Abstract:

The insulating materials of 500 kV AC self － contained oil － filled ( SCOF) submarine cables currently consist of two main types: kraft paper and PPL paper． Considering the huge differences between these two types including cost，insulation performance and dielectric loss performance，the first investment，annual operational cost，application experience and safety stability should be taken into consideration to make a final choice． Taking Hainan interconnection project for example，the performance and differences between these two insulating materials are introduced，and the technical and economical comparison is carried out based on different armour type，return conductor structure and reactive power compensation，etc． ，which may benefit other projects．

Key words:Hainan interconnection; self － contained oil － filled ( SCOF) submarine cable; kraft paper; PPL paper; losses; technical economy