Knife switch opening and closing state identification method and device based on multistage image information

Abstract

The invention discloses a knife switch opening and closing state identification method and device based on multistage image information, and the method comprises the steps: deploying an image collection device in a rectangular region below a knife switch arm, and collecting a knife switch image by aligning to a joint point of a knife switch contact, so as to enable the joint point to be located at the central position of the image; cutting the knife switch image to obtain an image Im and an image Im +, wherein the image Im is a rectangular frame area tightly covering a knife switch arm area, and the image Im + is a rectangular frame area tightly covering a knife switch contact area; inputting the images Im and Im + into a pre-constructed and pre-trained knife switch opening and closing state identification network model, obtaining the probability of each category of the knife switch opening and closing state, and selecting the state corresponding to the maximum value of the category probability as the identification result of the knife switch state. According to the method, the multi-level image information and the deep neural network are adopted, so that the feature expression capability is enhanced, and the robustness and recognition performance of the method are improved.

Description

technical field [0001] The invention belongs to the technical field of image recognition, and in particular relates to a method for recognizing the opening and closing state of a knife switch based on multi-level image information, and also relates to a device for recognizing the opening and closing state of a knife switch based on multi-level image information. Background technique [0002] Substation switching operation is an essential operation during the operation of the substation. It is used to change the operation mode of the power grid, support the operation and maintenance personnel to maintain the power transmission and transformation equipment, ensure the normal operation of the substation, and provide stable power supply for related lines and power consumption areas. Safe and stable operation of the power system. The identification of the opening and closing state of the knife switch is an important step in the switching operation and the key to ensure the accura...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a method and device for identifying the opening and closing state of a knife switch based on multi-level image information, and solve the technical problem of low performance in the state identification of a knife switch in the prior art

Images