基于集对分析和证据理论的电能表运行状态评估
Operation state evaluation of electric energy meter based on set pair analysis and evidence theory
李学生 1高黎航 1王君瑞1
作者信息
- 1. 北方民族大学电气信息工程学院 银川 750000
- 折叠
摘要
为及时准确地评估电能表的运行状态,提出一种基于集对分析和证据理论的电能表运行状态评估方法.首先根据电能表自身基础、在线监测及现场检测信息,建立电能表运行状态评估指标体系.然后运用模糊层次分析法和熵权法分别确定各指标的主客观权重,运用博弈论和变权理论确定各指标的组合权重与变权重.之后运用集对分析法确定各指标与各状态等级间的联系度,采用证据理论对各指标的联系度进行合成.最后利用最大隶属度原则与信度准则共同判定电能表的运行状态等级.实例分析结果表明,该方法与电能表的实际运行情况相符,且评估结果准确直观,与模糊综合评价法和集对分析法相比,该方法在状态等级区分度上达到了0.525 6,明显高于模糊综合评价法的0.302 4及集对分析法的0.148 3,具有较好的区分度,为电能表的状态评估提供了一种新的思路.
Abstract
In order to assess the operation state of electric energy meter timely and precisely,an evaluation method of electric energy meter operation state based on set pair analysis and evidence theory is proposed.Firstly,in line with the basis of the electric energy meter itself,on-line monitoring and on-site detection information,the evaluation index system of the running state of the electric energy meter is established.Then the fuzzy analytic hierarchy process and entropy weight method are applied to confirm the subjective and objective weights of each index,and then the game theory and variable weight theory are applied to confirm the combined weight and variable weight of the index.Then,the set pair analysis method is applied to confirm the connection degree between each index and each state level,and the evidence theory is applied to synthesize the degree of connection of each index to obtain the evaluation results.Finally,the maximum membership principle and the reliability criterion are used to evaluate the running state of the electric energy meter.The analysis results of the example show that the method is consistent with the actual operation of the electric energy meter,and the evaluation results are accurate and intuitive.Compared with the fuzzy comprehensive evaluation method and the set pair analysis method,the method reaches 0.525 6 in the state level discrimination,which is significantly higher than 0.302 4 of the fuzzy comprehensive evaluation method and 0.148 3 of the set pair analysis method.It has a good discrimination and provides a new idea for the state evaluation of the electric energy meter.
关键词
电能表/状态评估/变权/集对分析/证据理论Key words
electricity meter/state assessment/variable weight/set pair analysis/evidence theory引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据