基于信息融合的氧化锌避雷器运行状态综合评价方法

Comprehensive Evaluation Method of Operation Status of Zinc Oxide Surge Arrester Based on Information Fusion

针对当前避雷器故障诊断及运行状态评估参考指标量互相孤立的不足,提出了一种基于信息融合思想的避雷器运行状态评价模型.模型将避雷器在线监测、带电测试、停电检修、现场巡检等多源数据作为指标量,并利用最优组合赋权法计算指标量权重,克服了权重系数易受单一赋权方法影响而造成的偏倚;将避雷器运行状态作为评价量,通过隶属度函数建立指标量和评价量之间的数据关联规则,从而对避雷器运行状态这一带有模糊性的定性量用模糊集合进行定量评价;最后对故障避雷器进行解体分析,证明了本文提出的避雷器综合评价模型的有效性.

Aiming at the shortcomings of current lightning arrester fault diagnosis and running status evaluation reference index amount,an arrester operating status evaluation model based on information fusion theory is proposed.The model takes multi-source data such as on-line monitoring of lightning arrester,live test,blackout maintenance and on-site inspection as the indicator quantity,and calculates the index weight by the optimal combination weighting method for overcoming the insufficiency of bias caused by the weight coefficient being easily influenced by the single method of empowerment.The arrester operating status as the evaluation of the amount and establish the data association rules between the indicator quantity and the evaluation quantity through the membership function.Thus,the quantitative fuzzy evaluation of the ambiguous qualitative parameters of arrester operating status is carried out.Finally,the disassembly analysis of the fault arrester is carried out to verify the effectiveness of the arrester evaluation model proposed in this paper.