The Analysis And Design Of High Voltage Cable Laying Along Bridges Technology In The New District Of Zhoushan Islands

Compared with the commonly used method of submarine cable laying in island power grid,laying power cables along the traffic bridges has many advantages such as large transmission capacity enhancement and cost reduction.In addition,the maintenance of cables can be carried out via bridge maintenance passages,and thus improves the reliability of cable operation.This thesis focuses on the analysis and design study of high voltage cable laying along bridges technology in Zhoushan Islands.First,based on a detailed analysis of the related tandards and the engineering cases of the high voltage cable laying along bridges at home and abroad,the thesis investigates the standard adaptability,technical feasibility and application safety of high voltage cable laying along bridges technology.According to two documents: "Planning of the power grid of Zhoushan Islands District" and "The Comprehensive Transportation Planning of Zhoushan Islands District ",the thesis poposes a preliminary design scheme of the high voltage cable laying along bridges in the Zhoushan islands district with four kinds of cable layouts corresponding to four typical types of bridge sections.Finally,through a comparison the preliminary plan of new high voltage cable laying along bridges technology in Zhoushan Islands district with the submarine cable laying plan in technical and economic aspects,the thesis surmmaries the social and economic benefits with the implementation of the new thechnology.The study in this thesis meets the needs of the economic and grid's development in Zhoushan island very timely s.It provides a useful guide to the planning,design and construction of inter-island bridges and inter-island power network in Zhoushan new district.The new high voltage cable laying along bridges technology integrates effectively inter-island traffic and power channel resources,is able to reduce the project investment and improve the power supply reliability level of the island power grid.