QQ客服 官方微博 反馈留言

	山区复杂地形输电线路绕击跳闸率的研究
	周远翔 ; 鲁斌 ; 燕福龙 ; 崔吉峰 ; 李震宇 ; 徐旭 ; 刘亚新 ; 梁曦东 ; ZHOU Yuan-xiang ; LU Bin ; YAN Fu-long ; CUI Ji-feng ; LI Zhen-yu ; XU Xu ; LIU Ya-xin ; LIANG Xi-dong
	2010-06-10 ; 2010-06-10
关键词	复杂地形 输电线路 蒙特卡罗 电气几何模型 绕击跳闸 山区 complex landscape transmission lines Monte Carlo electro-geometric model(EGM) shielding failure flash-over mountainous area TM755 TM863
其他题名	Shielding Failure Flash-over Rate Under Conditions of Complex Landscape in a Mountainous Area
中文摘要	绕击是超高压、特高压输电线路雷击跳闸的主要原因,山区绕击跳闸率计算相对平原更为复杂。为提高山区线路绕击跳闸率的计算精度,在现场调研的基础上,利用蒙特卡罗法和改进的电气几何模型研究了山区复杂地形下输电线路的绕击特性,总结出了包括山顶、山谷、沿坡、爬坡、跨沟等各种典型的山区复杂地形下的绕击跳闸率计算模型,并且计算了各种典型地形下,不同坡度、不同沟深、不同杆塔高度的绕击跳闸率变化规律。本研究可为输电线路设计、改造和运行提供指导。; Shielding failure is the main cause of lightning flash-over of EHV transmission lines and UHV transmission lines.Electro-geometric (EGM) model is now the most popular method for the shielding failure flash-over rate(SFFOR) calculation.With this method,the calculation of SFFOR in a mountainous area is more complicate than that in the plain.In order to improve the precision of calculation of SFFOR under conditions of complex landscape in a mountainous area,the SFFOR under conditions of complex landscape in a mountainous area is studied on basis of the field investigation and by using Monte Carlo method and improved electro-geometric(EGM) model.The calculation model under conditions of complex landscape in a mountainous area includes peak,hollow,slope,ditch and so on.The research results include the SFFOR characteristics with the variation of the slope angle,the depth of ditch and the height of the towers.The decrease of the shielding effect of ground is the main reason for the decrease of SFFOR.With the increase of the depth of ditch and the height of the towers,the SFFOR increases because of the decrease of the shielding effect.The same phenomenon appears when the variation of the slope angle increases beyond 20.Ditch under lines often is ignored in the previous design.But according to the present result,we found that it apparently influences the effects of ground shielding and the shielding failure flash-over rate.It was suggested that ditch must be considered as one of the important factors in the lightening protection of transmission lines.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/62660]
专题	清华大学
推荐引用方式 GB/T 7714	周远翔,鲁斌,燕福龙,等. 山区复杂地形输电线路绕击跳闸率的研究[J],2010, 2010.
APA	周远翔.,鲁斌.,燕福龙.,崔吉峰.,李震宇.,...&LIANG Xi-dong.(2010).山区复杂地形输电线路绕击跳闸率的研究..
MLA	周远翔,et al."山区复杂地形输电线路绕击跳闸率的研究".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。