Identification and Simulation of Local Mechanical Damage of Arc Insulator Metal Connection Ring
Generally,the metal connection rings in arc insulators are installed on power equipment.Due to the complex environment and the influence of various interference factors,the identification results are inaccurate when mechanical damage occurs locally.In order to accurately identify local mechanical damage in the connecting ring,this article presented a method for identifying local mechanical damage to the metal connecting ring of arc insulators.At first,we modeled the image of the metal connecting ring by morphological opening-closing-by-reconstruction.And then,we performed the differential operation to get differential images.Meanwhile,we adopted the maximum entropy method to segment the image.According to the characteristics of the metal connecting ring of the arc insulator,we e-liminated the interference of non-damaged parts on image recognition.Moreover,we used the differential box-counting method based on fractal theory to divide the image into multiple sub-blocks.After that,their fractal dimen-sion values were calculated.Finally,we determined whether the image was within the numerical range,thus achieving the identification of local mechanical damage to the connecting ring.Experimental results prove that the proposed method can accurately identify local mechanical damage in the metal connecting ring of arc insulator,and has strong applicability.
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