摘要
针对现有XLPE电缆绝缘老化状态评估方法缺乏综合性评估和可靠性差的问题,通过综合试验数据分析,提出一种基于集对分析动态加权法的电缆绝缘老化状态评估方法。首先为统一计算评估体系中各指标参量的相对观测值,提出了"等价失效值"的概念,然后利用集对分析法求解各参量与状态等级之间的联系度,最后引入动态加权函数求解各性能指标与状态等级的总体联系度以获取评估结果。实例分析表明,所提方法在电缆绝缘老化状态评估上综合性强、可靠性高且简洁有效;所构造的绝缘老化规律曲线能够较好地反映该区域电缆绝缘老化情况,可为该区域现役电缆运维及电网改造提供指导。
Aiming at the problem of the lack of comprehensive evaluation and poor reliability of the existing XLPE cable insulation aging condition evaluation methods,a comprehensive cable analysis method based on the dynamic weighting method of set pair analysis is proposed to analyze the cable insulation aging condition.Firstly,the concept of"equivalent failure value"is proposed for the relative observation value of each index parameter in the unified calculation and evaluation system.Then the set pair analysis method is used to solve the relationship between each parameter and the state level.Finally,the dynamic weighting function is introduced to solve the problem.The overall relationship between each performance indicator and the status level is used to obtain the evaluation results.Example analysis shows that the proposed method is comprehensive,reliable,and simple and effective in the evaluation of cable insulation aging state.The constructed insulation aging curve can better reflect the cable insulation aging in this area,which can provide guidance for cable operation and maintenance and power grid transformation.
作者
李登淑
王昕
赵明
黄肖为
娄雨风
LI Deng-shu;WANG Xin;ZHAO Ming;HUANG Xiao-wei;LOU Yu-feng(School of Electric Power Engineering,Shanghai University of Electric Power,Shanghai 200090,China;Center of Electrical&Electronic Technology,Shanghai Jiao Tong University,Shanghai 200240,China;State Grid Zhejiang Hangzhou Power Supply Company,Hangzhou 310009,China)
出处
《水电能源科学》
北大核心
2020年第7期194-197,172,共5页
Water Resources and Power
基金
国网浙江省电力有限公司项目(5211HZ17000B)。
关键词
XLPE电缆
集对分析
动态加权
等价失效值
规律曲线
XLPE cable
set pair analysis
dynamic weighting
equivalent failure value
regular curve
