架空输电线路防舞设计关键问题探讨

Discussion on Key Problems of Anti-galloping Design for Overhead Transmission Lines

雷击、风偏、覆冰、舞动等为架空输电线路设计中需重点考虑的自然灾害,近几年输电线路因舞动导致的电网故障越来越多。为减少线路舞动引起的电网故障,须结合以往工程经验和相关设计规范,在设计阶段采取必要的防舞措施。探讨了设计阶段中防舞设计的关键问题,包括确定防舞设计依据、确定舞动设防分级、微地形微气象的识别、防舞装置的种类和特点、山东电网的防舞设计经验、加装防舞装置后对弧垂的影响、差异化的防舞设计等,为后续的工程设计提供参考或依据。

Lightning strike,windage yaw,icing and galloping are natural disasters that should be considered in the design of overhead transmission lines.In recent years,there are more and more power failures caused by transmission line galloping.In order to reduce the power failures caused by line galloping,it is necessary to take anti galloping measures in the design stage based on the previous engineering experience and relevant design specifications.The key issues of anti galloping design in the design stage was discussed in this paper,including the basis of anti galloping design,classification of galloping protection,identification of micro topography and micro meteorology,types and characteristics of anti galloping devices,anti galloping design experience of Shandong power grid,influence of anti galloping devices on sag after installing anti galloping devices,differential anti galloping design and so on,which can provide reference or basis for subsequent engineering design.