Method for telemetering pointer type SF6 gas density meter

Abstract

The invention discloses a method for telemetering a pointer type SF6 gas density meter. The method comprises the steps that images of the pointer type SF6 gas density meter are collected, and are transmitted to a reading end; the collected images are converted into black-and-white images; image regulation processing is carried out on the black-and-white images, so that violent changes caused by violent changes of illumination to the gray levels of the images are removed; a pointer recognition area of the pointer type SF6 gas density meter is set, and image binaryzation is carried out on the processed black-and-white images in the pointer recognition area; plaque noise in the pointer recognition area is removed; a linear equation corresponding to a pointer in the pointer recognition area is searched for, and the slope of the linear equation is determined; a number corresponding to the pointing direction of the pointer is determined. According to the method, the pointer type SF6 gas density meter is telemetered instead of on-site reading through personnel, the human cost is saved, existing devices are made full use of, and the method accords with the development trend of unmanned transformer substations in a smart power grid.

Description

technical field [0001] The invention relates to a method for reading meter readings, in particular to a SF 6 How to read the gas density gauge. Background technique [0002] SF 6 Gas has the characteristics of high dielectric strength and good arc extinguishing performance. It is the preferred insulating medium for high-voltage equipment and has been widely used in SF 6 High voltage circuit breaker, GIS, SF 6 Transformer, SF 6 on the transformer. SF 6 Whether the gas density is within the rated range determines the SF 6 It is one of the key parameters to determine whether the insulation and arc extinguishing performance of the gas is effective. Therefore, the operating regulations of the power industry stipulate that the SF must be checked regularly. 6 The density of the gas is detected. Currently, for SF 6 The detection of gas density mainly depends on the staff to go to the scene to check and read the mechanical pointer SF 6 The readings of the gas density meter,...

AI Technical Summary

Problems solved by technology

Currently, for SF 6 The detection of gas density mainly depends on the staff to go to the scene to check and read the mechanical pointer SF 6 The readings of the gas density meter, the operating experience shows that this detection method not only wastes a lot of manpower and material resources, but also has low work efficiency, which is not in line with the development trend of smart grid unattended substations. Technology upgrade or retrofit

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