柔性直流换流站阀厅屋面结构体系研究

Study on Roof Structure System of Valve Hall of Flexible DC Converter Station

柔性直流输电技术是一种以电压源变流器、可控关断器件和脉宽调制技术为基础的新型直流输电技术。该技术具有可控性高、设计施工方便环保、占地小及换流站间无需通信等优点。阀厅是直流换流站工程的核心建筑物,阀厅结构的设计质量关系到换流站的安全性,阀厅的大跨度屋面结构更是设计的难点。文中通过分析不同屋面结构体系受力性能,对比研究了各自的特点,提出柔性直流换流站阀厅屋面体系的最佳方案。

Flexible DC transmission technology is a new type of DC transmission technology based on voltage source converter, controllable switching device and pulse width modulation technology.The technology has the advantages of high controllability, convenient design and construction,environmental protection,small occupation of land and no communication between converter stations.Valve hall is the core building of DC converter station project.The design quality of valve hall structure is related to the safety of the converter station.The large-span roof structure of valve hall is the difficulty of design.By analyzing the mechanical properties of different roof structure systems and comparing their characteristics,the optimum scheme of flexible DC converter station valve hall roof system is put forward.