中国电力2017，Vol.50Issue(11)：90-95,6.DOI:10.11930/j.issn.1004-9649.201606076
国内外架空输电线路档中线间距设计的对比研究
Comparative Research on Mid Span Clearances of Overhead Transmission Lines Design Between Domestic and Foreign Standards
汪晶毅 1潘春平 1朱映洁1
作者信息
- 1. 中国能源建设集团广东省电力设计研究院有限公司,广东广州510663
- 折叠
摘要
Abstract
The mid span clearance has important influence on tower top geometry and reliable operation of overhead transmission lines.The existing comparison between domestic and foreign design standards mainly focus on wind load on the basis of tower structure,while research on mid span clearance between conductor and conductor or conductor and earthwire are absent.Chinese,Japanese,European and CIGRE design standards are selected to study mid span clearance calculation methods.The analysis and comparison includes different aspects such as design and check conditions,wind load,swing angle calculation and electric clearance requirements.The existing problems in standards are also discussed.An 500 kV line is taken as example to discuss different tower top geometry between phase to phase determining by mid span clearance.Influence of wind velocity,wind direction,conductor arrangement,conductor type and spans on tower top are also studied.It is proposed that,in domestic design and check of mid span clearance,normal distribution should be used for swing angel of conductors and standard deviation should be decided by line importance.Also,it is advised to perform long-term research and observation of swing characteristics of conductors in order to improve overhead lines design.关键词
架空输电线路/档中线间距/风偏角/标准偏差/电气间隙Key words
overhead transmission lines/mid span clearance/swing angle/standard deviation/electrical clearance分类
信息技术与安全科学引用本文复制引用
汪晶毅,潘春平,朱映洁..国内外架空输电线路档中线间距设计的对比研究[J].中国电力,2017,50(11):90-95,6.
