A lidar-based detection method for the closing state of high-voltage disconnectors

Abstract

The invention discloses a high-voltage isolation switch closing state detection method based on laser radar. The detection method comprises the steps of establishing a geometric abstract model of a high-voltage isolation switch closing action process; proposing a measurement algorithm of the included angle value between the front or rear conductive arm of the high-voltage isolation switch and thehorizontal direction; scanning the high-voltage isolation switch through a ground laser radar, and obtaining the point cloud of the conductive arm; front and rear conductive arm point clouds are cut off by a certain number of planes of which the positions are vertical to any coordinate axis; designing and developing an automatic measuring and calculating module for the included angle of the conductive arm; the automatic measuring module automatically measuring the included angle value of the conductive arm; and judging the closing state of the high-voltage isolation switch. By analyzing the closing action process and structural characteristics of the high-voltage isolation switch, the feasibility and advantages of judging the closing state by measuring the included angle of the conductivearms are demonstrated. Point cloud data of the high-voltage isolation switch are obtained based on a ground laser radar, a method for calculating the axis direction of a cylinder through point cloud grouping and ellipse fitting is provided, and the calculation difficulty is reduced.

Description

technical field [0001] The invention relates to mechanical fault diagnosis of a high-voltage isolating switch, in particular to a method for detecting the closing state of a high-voltage isolating switch based on laser radar. Background technique [0002] The high-voltage isolating switch is driven by the operating mechanism to realize the contact and separation of the moving contact with the static contact. When operating outdoors, it is very susceptible to environmental influences. In addition, the operation and maintenance of the operating mechanism is not timely, and the mechanism is rusted and jammed, resulting in the failure of the high-voltage disconnector to close, resulting in gaps, resulting in heat or even discharge, affecting equipment life and threatening power grid security. run. At present, there is a lack of detection and diagnosis technology for high-voltage isolating switches, which is mainly based on experience judgment. Whether the high-voltage isolating...

AI Technical Summary

Problems solved by technology

But unfortunately, due to the lack of advanced and operable live detection technology, visual inspection and qualitative judgment based on operating experience are the main methods currently used on site. Exposure to insufficiency

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