!!!基于粗糙集理论的架空输电线路运行状态评估.pdf

研究与开发
基于粗糙集理论的架空
输电线路运行状态评估
姜涛‘韩富春‘范卫星’
( ,太原 03 0024;
,山西阳泉 04 50 00 )
摘要本文提出了一种基于粗糙集理论的架空输电线路运行状态评估新方法。利用粗糙集理
论建立架空输电线路决策表,并进行属性约简,得出决策规则。然后,分析计算了各条件属性对
各架空输电线路运行状态的不同权重,克服了传统方法确定权重系数的主观性。
关键词: 粗糙集; 输电线路; 状态评估
Evaluating the Condition of 0 verhead Tr ansmission Lines
Based on Rough s ets Theory
加ng 几01 脚n几chun] 凡n we ixingZ
( ment of Electrical and power Engineering,Ta iyuan University of Te chnology,Ta iyuan
030024: 2. The Ya ngquan Branch of th e power Pany,Ya ngquan 045000)
Abstract The new meth od of evaluating the condition of oveth ead trans而ssion lines was
Presented in the basis of the rough set decision一making tab le of overh ead transmission lines is
established by using th e rough set theory. its attributes are reduced,then the decision一making Planning is
obtained. Mean while,dife rent weight of each condition attribute cor elated with the condition of
overhead transmission lines is analyzed,so the subj ectivity of tr aditional method in the determination of
weight coefi cients is overc ome,
Key 、Vords: Rough set; transmission lines; condition evaluating
1 引言 2 粗糙集理论
粗糙集(Rou gh s,et Rs)的应用目前主要还是集 2. 1 粗糙集概述
中在规则提取方面,国外已经有学者用粗糙集进行粗糙集理论是由波兰学者Pawl ak z .在1982 年
了地区降水量预测、疾病诊断等应用[l1 ,取得了良提出的,是一种刻画不完整性和不确定性的数学工
好效果。本文应用粗糙集方法对架空输电线路运行具,能有效地分析和处理各种不完备信息,并从中
状态进行了分析,发现了一些有用的信息。之