一种基于VC++平台的输电线路防雷措施层次分析方法  

AHP for selecting transmission line lightning protection based on VC

作　　者：黄文武 杨旭[2] 刘玉[2] 王玮 姚森敬 鲁海亮[2] 文习山[2] 

机构地区：[1]深圳供电局有限公司,广东深圳518020 [2]武汉大学电气工程学院,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2016年第4期585-590,共6页Engineering Journal of Wuhan University

摘　　要：为克服目前防雷工作缺乏针对性、投入产出比不高的缺点,提出一种VC++编程自动推荐防雷措施的方法.基于杆塔所在地形地貌特征、杆塔结构、已有的绝缘配置、已采取的防雷措施、反击绕击跳闸率超标百分比等指标,初步确定备选的防雷改造措施;综合考虑跳闸率降低效果、改造费用、施工难易度、对系统的影响、维护难易度等因素的相对重要性,确定最优防雷改造措施.以广东某220kV和110kV实际线路为例对各种措施进行综合评估和计算,得出结论:利用层次分析法理论构建的输电线路综合防雷措施评估模型,可以不用进行复杂的矩阵计算而直接求出各层次的因素排序权值,降低实际工作中的计算量,且判断矩阵具有完全的一致性,可以大大简化VC++编程算法.利用提出的方法对实际工程线路进行改造,有效提高了输电线路的耐雷水平,显著降低雷击跳闸率,化解线路防雷运行风险.In order to overcome the current shortcomings of that the lightning protection work lacks target and input-output ratio is not high,we propose a method which can automatically recommend lightning protection measures by VC＋＋programming language.According to terrains and topographic features,tower structure and insulation configurations,installed lightning protection measures,over proof percentage of lightning flashover rate,etc,we can initially determine the alternative lightning protection rebuilding measures.The optimal lightning protection rebuilding measures is selected by comprehensively considering the effect of lightning flashover rate detracting,engineering cost,rebuilding difficulty,impact on the system,maintenance difficulty,etc.Taking practical 220 kV and 110 kV transmission lines for examples,we can draw the following conclusions.According to the comprehensive assessment models of transmission lines lightning protection measures built by the analytic hierarchy process（AHP）,we can obtain the factor sort weights of all levels directly without performing complex matrix calculations,reducing the amount of calculation in practical work;and it has a complete consistency.So it can greatly simplify the VC＋＋ programming algorithm.The practical circuit transformation based on this method,effectively improve the lightning withstand level of transmission lines,significantly reduce the lightning trip out rate,resolve the operational risks.

关 键 词：VC++ 自动推荐防雷措施 备选防雷措施 最优防雷措施 层次分析法 

分 类 号：TM863[电气工程—高电压与绝缘技术]