Method for telemetering pointer type SF6 gas density meter

A gas density, pointer technology, applied in the field of reading SF6 gas density meter, can solve the problems of wasting manpower and material resources, not conforming to the development trend of smart grid unattended substations, and low work efficiency.

Inactive Publication Date: 2014-07-30
STATE GRID CORP OF CHINA +2
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  • Abstract
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  • Application Information

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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 d

Method used

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  • Method for telemetering pointer type SF6 gas density meter
  • Method for telemetering pointer type SF6 gas density meter
  • Method for telemetering pointer type SF6 gas density meter

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Embodiment Construction

[0068] The pointer type SF described in the present invention will be described below in conjunction with the accompanying drawings and specific embodiments. 6 The telemetry method for gas density meters is further explained and illustrated.

[0069] figure 1 Schematically shows the pointer type SF of the present invention 6 A flow of a remote measurement method for a gas density meter in an embodiment.

[0070] Such as figure 1 As shown, the telemetry method of the present embodiment includes the following steps:

[0071] (1) Acquisition pointer SF 6 image of the gas density gauge and transmit the image to the reading end;

[0072] (2) Convert the collected images into black and white images;

[0073] (3) Use the histogram specification method to perform image specification processing on the black-and-white image, so as to remove the drastic changes in the image gray level caused by the drastic changes in the light in the black-and-white image; the histogram specificati...

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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,...

Claims

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Application Information

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IPC IPC(8): G06T5/40G06T5/00G01N9/00
Inventor 孙岳张建卢之男张忠蕾沈小军盛戈皞江秀臣
Owner STATE GRID CORP OF CHINA
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