CAJ | 학술논문

鉴于在线监测污闪报警的复杂性,单一以紫外脉冲数为报警参数有一定的局限性,针对绝缘子的状态评估中需考虑多因素且具有模糊性和随机性的特点,提出将模糊综合评判的方法应用于绝缘子状态评估的多级模糊综合评判方法.通过分析影响绝缘子状态主要方面的特征参量,建立层次型评估指标体系;在用层次分析法确定指标的常权的基础上,引入基于均衡函数的变权模式,综合考虑指标间的均衡性,对常权进行修正并得到变权;最后利用模糊理论确定单因素的各状态等级的隶属度,并基于多级模糊评判的算法进行模糊运算,综合得出了绝缘子状态.通过实例比较变权与常权模糊评判的结果表明, 变权综合比常权更合适更客观的反映了绝缘子的真实运行状态.
감우재선감측오섬보경적복잡성,단일이자외맥충수위보경삼수유일정적국한성,침대절연자적상태평고중수고필다인소차구유모호성화수궤성적특점,제출장모호종합평판적방법응용우절연자상태평고적다급모호종합평판방법.통과분석영향절연자상태주요방면적특정삼량,건립층차형평고지표체계;재용층차분석법학정지표적상권적기출상,인입기우균형함수적변권모식,종합고필지표간적균형성,대상권진행수정병득도변권;최후이용모호이론학정단인소적각상태등급적대속도,병기우다급모호평판적산법진행모호운산,종합득출료절연자상태.통과실례비교변권여상권모호평판적결과표명, 변권종합비상권경합괄경객관적반영료절연자적진실운행상태.
In view of the complexity of on-line monitoring flashover warning system, system only with ultraviolet pulses has some limitation. Aiming at the feature that insulator condition assessment system needs to be considered for multifactor and has fuzziness and randomicity, a fuzzy synthetic assessment method with variable weights was introduced. Through analyzing the variables affecting on insulator condition, a layered assessment indices system for insulator condition assessment was built. First, the AHP method was used to determine the constant weight of every indices, then the variable weight model was introduced based on balanced function, in which the constant weights was modified to get the variable weights, Then the fuzzy set theory was applied to determine the membership degree of a single index, and based on the idea of mutli-grade fuzzy assessment, the condition of every grade was valuated to get the comprehensive status of insulator. By comparing the fuzzy synthetic evaluation based on constant weights with that based on variable weighs, the example shows that the condition assessment for insulator using variable weights based on balanced function is more reasonable and more objective.