基于层次分析法的浙江电网雷击跳闸孕灾环境敏感性评估

发布时间：2018-01-20 23:53

本文关键词： 电网雷击跳闸层次分析法孕灾环境海拔高度坡度坡向土地利用类型河网密度　出处：《高电压技术》2017年02期 　论文类型：期刊论文

【摘要】：为了提高电网雷击跳闸风险评估的有效性和科学性,实现差异化防雷,有必要对电网雷击跳闸孕灾环境进行研究。基于1:50 000数字高程模型(DEM)数据和浙江电网110 kV及以上输电线2005—2013年逐年雷击跳闸事故资料,利用GIS技术提取浙江电网雷击跳闸事故点的地形地貌因子(海拔高度、坡度、坡向、土地利用类型和河网密度),定量化分析了雷击跳闸事故点的地形地貌特征。选取海拔高度、坡度、坡向、土地利用类型和河网密度作为电网雷击跳闸孕灾环境的评价指标,利用层次分析法构建电网雷击跳闸孕灾环境评估模型,绘制了浙江电网雷击跳闸孕灾环境分布图。经过与致灾因子危险度分布相关分析,两者相关系数0.451,这说明孕灾环境分布图是合理的,可用于电网雷击跳闸风险评估。从浙江电网雷击跳闸综合孕灾环境敏感度分布图可知,浙北北部和浙东沿海是浙江电网雷击跳闸孕灾环境的高敏感区;浙中和浙西地区是浙江电网雷击跳闸孕灾环境的低敏感区。
[Abstract]:In order to improve the effectiveness and scientific nature of lightning tripping risk assessment, the differentiated lightning protection is realized. It is necessary to study the environment of lightning tripping in power grid. Based on the 1:50 digital elevation model. Data and data of lightning tripping accidents of 110 kV and above transmission lines in Zhejiang Power Grid from 2005 to 2013. The topographic and geomorphologic factors (elevation, slope, slope, land use type and river network density) of lightning tripping accident site in Zhejiang Power Grid were extracted by GIS technology. The terrain and geomorphology characteristics of lightning tripping accident site are analyzed quantitatively. The elevation, slope, slope direction, land use type and river network density are selected as the evaluation indexes of lightning tripping disaster environment in power grid. Based on the analytic hierarchy process (AHP), the environmental assessment model of lightning tripping is constructed, and the environmental distribution map of lightning tripping in Zhejiang power grid is drawn. The correlation coefficient of the two factors is 0.451.This indicates that the environmental distribution map of disaster prevention is reasonable and can be used to assess the risk of lightning tripping in power grid, and it can be seen from the comprehensive environmental sensitivity map of lightning tripping in Zhejiang Power Grid. The northern part of Zhejiang and the coastal area of east Zhejiang are the high sensitive areas of lightning tripping environment in Zhejiang power grid. The middle and western Zhejiang areas are the low sensitive areas of lightning tripping environment in Zhejiang power grid.
【作者单位】：浙江省气象科学研究所;中国气象科学研究院灾害天气国家重点实验室;国网台州市黄岩区供电公司;浙江省防雷中心;国网浙江省电力公司电力科学研究院;
【基金】：中国气象科学研究院灾害天气国家重点实验室开放课题(2013LASWB-04) 公益性行业(气象)科研专项(GYHY20110635)~~
【分类号】：TM863
【正文快照】： 2.中国气象科学研究院灾害天气国家重点实验室,北京100081;3.国网台州市黄岩区供电公司,台州318020;4.浙江省防雷中心,杭州310008;5.国网浙江省电力公司电力科学研究院,杭州310014)Sensitivity Assessment on Hazard-pregnant Environment of Lightning Trip-out in ZhejiangP

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