文章摘要
一种基于可靠性分析的输电线路路径设计方法
A transmission line path design method based on reliability analysis
投稿时间:2017-01-23  修订日期:2017-05-04
DOI:
中文关键词: 路径选择  待选路径  故障率  逐月变化特性  输送电能损失
英文关键词: path selection  selected path  failure rate  monthly time behavior  expected energy loss
基金项目:
作者单位E-mail
王川化 江苏兴力工程建设监理咨询有限公司 13951921710@139.com 
余鹏飞 英国邓迪大学  
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中文摘要:
      对待选路径可靠性进行评估是输电线路规划设计中路径选择工作的重点之一。针对常规的采用多年平均故障率的方法存在的不足,本文提出了一种面向路径选择的可靠性参数处理方法。基于对待选路径跨越区域内已有线路的历史故障信息的统计,以月为时间尺度计算待选路径各个月份的故障率,并对其逐月变化特性进行函数拟合;考虑到与待选路径相连的电源出力也可能是时变的,本文同样对电源出力的逐月变化特性进行函数拟合。最后根据待选路径故障率和电源出力的拟合函数,通过计算待选路径的全年输送电能损失期望来反映其可靠性水平,可为待选路径间的比较和最优路径的选择提供重要的参考依据。
英文摘要:
      Reliability assessment for selected paths is one of the focuses in path selection of transmission line planning and design process. Considering the disadvantages of conventional methods which adopt average annual failure rate, a reliability parameter processing method for path selection is proposed in this paper. Based on statistics for historical failure information of existing lines in the area where selected paths cross, failure rate of each month of selected paths is calculated in monthly scale and its monthly time behavior is fitted. Owing that the power supply output connected to the selected path may be also time-varying, the monthly time behavior of power supply output is then fitted. Finally, according to fitting functions of selected path failure rate and power supply output, the reliability level corresponding to the selected path can be reflected through calculating the expected energy loss of full year, which can provide important reference for comparing several selected paths and choosing the optimal path.
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