我国高压及超高压交联聚乙烯绝缘电力电缆的应用与发展

Development and application of high voltage and extra-high voltage XLPE power cable system in China

本文介绍我国 110 k V及 2 2 0 k V交联聚乙烯 (XL PE)绝缘电缆及其附件的发展。高压 XL PE电缆是我国城市电网建设与改造工程采用地下电缆输电系统的首选产品。本文叙述 XL PE电缆的绝缘设计原则、绝缘质量控制要求 ,特别是绝缘中杂质、微孔以及绝缘与半导电屏蔽界面的微孔与凸起、绝缘收缩与交联工艺的关系 ,及电缆附件的选型与预制附件橡胶应力锥的设计方法。介绍了我国特大城市 ,上海、北京与广州高压电缆系统的应用情况。最后对我国 110 k V及 2 2 0 k V XL PE电缆及附件进一步发展以及 5 0 0 k V XL

The development of 110 kV and 220 kV XLPE cables and their accessories in China are presented. High voltage XLPE cable is the preferred choice for transmission line used in power grid renovation and construction in China. The principle of design and quality control in manufacture (especially for contaminants and voids in insulation, voids and protrusion in the interface between insulation and semiconductive layer and insulation shrinkage related to cross linking process) of XLPE insulation is described. Also described are the selection of applicable accessories for XLPE cables and the design philosophy of rubber stress cone for prefabricated accessories. Finally, further development of 110 kV and 220 kV XLPE cables and their accessories as well as development and application of 500 kV XLPE cable system in China are envisaged.