摘要
针对硅橡胶复合绝缘子长期在户外运行时出现的老化问题,提出一种基于模糊综合评价的绝缘子状态评估方法。从硅橡胶复合绝缘子伞套材料角度出发,建立机械性能指标、憎水性指标、电气性能指标等4个一级指标,以及所属的12个二级指标。通过构建评价指标的隶属度函数来获得各指标的隶属度,结合改进层次分析法和熵权法的组合赋权法,对各指标进行赋权,最后根据线性加权法求取复合绝缘子的等级状态。实例证明该模型能准确高效地判断出复合绝缘子的状态,为复合绝缘子的状态检修提供依据。
Aiming at the aging problem of silicone rubber composite insulators with long-term outdoor operation,a composite insulator condition assessment method is proposed based on fuzzy comprehensive evaluation.From the perspective of silicone rubber shed materials of composite insulators,four first-level indicators,including mechanical performance index,hydrophobic index and electrical performance index,as well as 12 second-level indexes are established.The membership of each index is obtained by constructing the membership function of the evaluation indexes,and the weight of each index is given with the combined weight method of improved analytic hierarchy process(AHP)and entropy weight method.At last,the linear weighting methods is used to calculate the grade status of composite insulators.Case study shows that the proposed model can accurately and efficiently discriminate the state of composite insulators,which can provide a basis for the condition maintenance of composite insulators.
作者
王思华
陈龙
王军军
赵磊
WANG Sihua;CHEN Long;WANG Junjun;ZHAO Lei(College of Automation&Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Rail Transit Electrical Automation Engineering Laboratory of Gansu Province,Lanzhou Jiaotong University,Lanzhou 730070,China)
出处
《中国电力》
CSCD
北大核心
2021年第5期156-165,共10页
Electric Power
基金
国家自然科学基金资助项目(盐碱沙尘地区接触网绝缘子动态积污规律和污闪预测方法的研究,51767014
风沙环境下兰新高铁接触网附加导线舞动放电特性及防治技术研究,51867013)
中国铁路总公司科技研究开发计划资助项目(盐碱区域绝缘子动态积污分析及防治技术研究,2017010-C)。
关键词
复合绝缘子
模糊综合评价
隶属度函数
改进层次分析法
熵权法
silicone rubber composite insulator
fuzzy comprehensive evaluation
membership function
improved AHP
entropy weight method
