基于隶属函数-G1法的变压器状态综合评判

Transformer Condition Assessment Based on Membership Functions and G1

为了提高变压器状态模糊综合评判的客观性、科学性,提出了内涵性权重与结构性权重相结合的组合赋权法来确定变压器状态的各技术性指标的权重,该方法弥补了单一赋权法的不足。采用隶属函数-G1法来确定权重,便于实际应用,减少了计算量。多级评判模型的建立实现了变压器状态的分层多级评判,评判结果不仅可以反映变压器的综合状态,同时反映各层级指标的自身状态。最后通过实例验证了该方法的客观性、全面性,从而使评判结果更科学、准确。

To obtain a more objective and scientific result of transformer condition（TC） fuzzy synthetic evaluation,this paper presents a combined weighing method to determine weights of TC indices.The new method integrates advantages of both objective weighing and subjective weighing and remedies the defects of single-weighing.For more applications,membership and G1 are applied to reduce the amount of calculation.Multilevel assessment is applied to realize transformer condition assessment hierarchically.The assessment results can simultaneously reflect the index condition at each level and the overall condition of transformer.And the examples show that the method with more objective and sufficient weights leads to a more scientific and accurate evaluation.