基于IAHP与FCEM的变压器寿命评估

Transformer Life Assessment Based on IAHP and FCEM

为准确评估电力变压器健康状态及寿命,保障电力系统安全、可靠运行,建立了变压器健康状态及寿命的分层评估模型。该模型以变压器实验指标为基础,综合考虑了变压器基本参数和修正因子的影响,建立了相应的层次指标体系及各指标参数与体系模型之间的关联。采用改进层次分析法(IAHP)和模糊综合评估法(FCEM)对实验指标进行了具体分析,得到了变压器实验健康状态模糊综合评价集,并将其转化为健康指数值,结合基本参数和修正因子体系求解出变压器本体健康指数。通过该评价模型对某变电站变压器进行剩余寿命评估后,结果与实际健康状况基本相符,证明了该方法的有效性。

In order to accurately evaluate the health status and life of power transformer and ensure the safety and operation of power system.A hierarchical evaluation model of transformer health and life is constructed.The model is based on transformer experimental indexes.The influence of basic stability parameters and correction factors is considered comprehensively.The corresponding hierarchical index system and the correlation between each index and the model are established.The improved analytic hierarchy process(IAHP)and fuzzy comprehensive evaluation are adopted.The method(FCEM)makes a concrete analysis of the experimental indicators,transforms the health condition evaluation matrix into the health index value,and can directly see the merits and demerits of the evaluation data.After the specific analysis of a transformer in a substation by the model,the results are basically consistent with the actual statistical data.