东海大桥高压电缆工程设计

Engineering designs for high voltage cable laying along Donghai Bridge

洋山深水港110 kV变电站的电源线路是敷设于东海大桥的箱梁内的两回110 kV 630 mm2交联电缆,是目前世界上最长的敷设于桥梁的高压电缆,详尽介绍了在东海大桥电缆工程设计时,应对桥梁伸缩、振动,以及如何处理电缆金属护套的接地等技术难题所采取的措施。

The Donghai Bridge is a cross-sea bridge connecting the mainland of Shanghai and the Yangshan Deep Water Port. As the power source lines of the 110 kV substation in the Small Yangshan Island, two circuits of 110 kV 630 mm^2 - XLPE power cables, the longest high voltage cable laid along the bridge in the world, were laid in the box girders of the Donghai Bridge. To lay the cable along the bridge successfully, the technical problems such as bridge expansion and vibration, and grounding should be solved. Measures adopted in the cable laying engineering project are recommended.