一种新型变压器故障诊断方法

A novel fault diagnosis method for transformer

针对当前变压器故障难于在线检测的问题,提出了一种改进粗糙集的约简算法,将溶解气体的绝对值和比值作为原始规则进行处理,从而获得最终的结果。算法首先将连续属性的离散化、属性约简和值约简都统一转化为可辨识矩阵的化简问题进行统一处理,有效的提高了算法的精度、执行效率和连贯性。并给出了变压器故障诊断装置原理图。将建立的专家系统应用于某特定型号10kV主变压器(隔膜式),获得了较为满意的诊断结果,验证了本文提出方法的有效性和实用性。

A novel reduction method is put forward based on improved rough set to deal with the difficulty of on-line fault diagnosis on transformer. The value and ratio of dissolved gas-in-oil is seemed as original rules for the final results. The problems of continuous attribute discretization, attributes reduction and attribute values reduction of rough sets are translated into the only one thing of discernibility matrix simplified. In this way, the precision, efficiency and consistency of fault identification can ...