Pose detection method, system, medium and device for grounding knife switch in switch cabinet

Abstract

The invention discloses a pose detection method, system, medium and device for a grounding knife switch in a switch cabinet. The method comprises the following steps of acquiring a grounding knife-switch image in the moving process of a grounding knife-switch moving contact with a mark point through image acquisition equipment; carrying out segmentation on mark points in the collected grounding knife-switch image to obtain each mark point; calculating gray scale gravity center pixel coordinates of each mark point in the grounding knife-switch image; and obtaining the position and the rotationangle of the earthing knife-switch moving contact through calculation according to the calibration parameters of the image acquisition device and the gray center-of-gravity pixel coordinates of each mark point. According to the invention, an optical imaging non-contact detection method is adopted, the three-dimensional position and attitude information of the earthing knife-switch in the opening and closing process can be obtained in all directions, and the method has the advantages of high detection precision, safety, reliability and no influence on the working performance of the earthing knife-switch in the switch cabinet.

Description

technical field [0001] The invention relates to the field of state detection of switchgear in a power system, in particular to a method, system, medium and equipment for detecting the position and posture of ground knives in a switchgear. Background technique [0002] The switchgear is a kind of electrical equipment. The main function of the switchgear is to open and close, control and protect the electrical equipment during the process of power generation, transmission, distribution and power conversion in the power system. The switchgear floor knife is an extremely important actuating switch device in the switchgear. During the working process of the switchgear, if the switch needs to be opened and closed, the ground knife needs to be turned to the corresponding position. If the ground knife cannot be actuated in place, it will seriously affect the closing / opening effect, resulting in equipment damage or even security incident. Therefore, during the actuation of the grou...

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Problems solved by technology

This method can only judge the opening and closing status, but cannot determine the position of the ground knife

The position of the ground knife can also be judged in real time by means of ultrasonic waves, but this method can only obtain the position information of the ground knife, but cannot obtain its attitude information, and cannot further measure the kinematic information such as the angular velocity of the ground knife

For the requirements of one-button sequential control of the smart grid, the ability to obtain the three-dimensional position and attitude information of the ground knife in the process of opening and closing in an all-round way plays an important role for dispatchers to judge the working status of the ground knife. However, the current existing methods None of these goals can be achieved

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