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	蒙特卡罗法计算线路雷击跳闸率随机过程研究
	周远翔 ; 鲁斌 ; 李震宇 ; 徐旭 ; 胡航海 ; 王宁华 ; 梁曦东 ; 关志成 ; ZHOU Yuan-xiang ; LU Bin ; LI Zhen-yu ; XU Xu ; HU Hang-hai ; LIANG Xi-dong ; GUAN Zhi-cheng ; WANG Ning-hua
	2010-06-10 ; 2010-06-10
关键词	蒙特卡罗法 输电线路 雷击跳闸率 电气几何模型 工频电压瞬时值 Monte Carlo method transmission line lightning flash-over rate electric geometry method transient power frequency parameter TM863
其他题名	Selection of Random Processes in Application of Monte Carlo Method to Calculation of the Lightning Flash-over Rate of Transmission Lines
中文摘要	针对规程法分析输电线路防雷性能中过于简单化和EMTP计算复杂化问题,用较符合雷击实际过程的蒙特卡罗法计算输电线路雷击跳闸率。因雷击随机过程的选取直接影响计算速度和计算结果的确信度,故在研究了雷电流幅值、波头时间、雷击部位、工频电压瞬时值、风偏等随机过程对跳闸率计算的影响的基础上,综合考虑计算速度和计算结果确信度,确定雷电流幅值、雷击部位、反击时工频电压瞬时值为蒙特卡罗法中需要考虑的因素。经验证设计的蒙特卡罗法雷击跳闸率计算结果和实际运行线路雷击跳闸率统计结果相吻合。; It is well known that lightening trip out caused by lightening flashover of electrical power transmission lines greatly influences the safety and steady operating of power system.Research has been widely carried out with calculation of lightening flash-over rate of transmission lines.In calculation of lightning flash-over rate of transmission lines,the selection of random processes is very important for the speed and the precision of the calculation.In this paper,the lightening flashover rate of transmission lines is studied by using a modified Monte Carlo method.Typical tower parameters of 110 kV,220 kV and 500 kV transmission lines are selected and the electric geometry method is introduced.The probability of hitting the tower under different kinds of landscape and the shield failure flashover rate under different obliquities are calculated.The back flash-over rate as well as the shield failure flash-over rate of typical towers before and after considering the power frequency voltage is also calculated.The influence of stroke current,front time,the hitting point,transient power frequency voltage and windage yaw on the lightning flash-over rate of transmission line is analyzed.On the basis of analyses above and considering the speed and the precision of the calculation,it is found that the random processes including stroke current,the hitting part and power frequency voltage of back flashover are crucial in the Monte Carlo method.After calculating actual 110 kV,220 kV and 500 kV transmission lines,it is proved on site that this new Monte Carlo method has good correspondence with the real calculating results.; 国家科技支撑计划重大项目“特高压输变电系统开发与示范”资助(2006BAA02121)。~~
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/62604]
专题	清华大学
推荐引用方式 GB/T 7714	周远翔,鲁斌,李震宇,等. 蒙特卡罗法计算线路雷击跳闸率随机过程研究[J],2010, 2010.
APA	周远翔.,鲁斌.,李震宇.,徐旭.,胡航海.,...&WANG Ning-hua.(2010).蒙特卡罗法计算线路雷击跳闸率随机过程研究..
MLA	周远翔,et al."蒙特卡罗法计算线路雷击跳闸率随机过程研究".(2010).

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