Method based on contact proportion of dynamic contact and static contact and used for distinguishing switching-on and switching-off reliability of disconnecting link

Abstract

The invention discloses a method based on the contact proportion of a dynamic contact and a static contact and used for distinguishing switching-on and switching-off reliability of a disconnecting link. The method comprises the following steps: step 1. establishing a standard data template for the proper switching-on operation according to data information of the concrete position of the contact of the disconnecting link when the disconnecting link is properly switched on; step 2. analyzing by a computer the collected visible light image information or infrared image information about the switching-on condition of the disconnecting link collected by a mobile robot at real time; and step 3. comparing the switching-on condition of the disconnecting link collected at real time with the established standard data template for the proper switching-on operation, if the switching-on condition of the disconnecting link is consistent with the standard data template, then the disconnecting link is reliably switched on into place; otherwise, the disconnecting link is not reliably switched on into place. The method provided by the invention has the beneficial effects of realizing identification on the switching-on and switching-off reliability of the disconnecting link on the basis of an image pattern recognition technology, operators can be replaced to realize identification on the switching-on and switching-off reliability of the disconnecting link, the labor intensity of operators is greatly reduced, the operation time is shortened, and the influences of the subjective factors of on-site personnel are removed.

Description

technical field [0001] The invention relates to the field of substation automation control, in particular to a method for judging the closing reliability of a knife switch state based on the contact ratio of a moving and static contact. Background technique [0002] In the substation operation, the knife switch is an important equipment for changing the operation mode. During the switching operation of the substation, due to the abnormality of the limit switch of the secondary circuit of the knife switch or the looseness or jamming of the mechanical components of the primary part of the knife switch, the knife switch will be caused. The unreliable failure of gate opening and closing will directly affect the safety and reliability of the system power supply, and may cause malignant accidents, which will definitely affect industrial and agricultural production and people's normal life, and bring losses to the national economy. [0003] In order to effectively prevent personal ...

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Problems solved by technology

[0008] 1. "A device for detecting the opening and closing of the knife switch" realizes the judgment of the opening and closing of the knife switch by changing the physical structure of the knife switch. In the process, it is necessary to cut off the power of the line, which brings inconvenience to production and life

[0009] 2. The "Pattern Recognition Method for Switches in Substations Based on Infrared Detection" uses the analysis of infrared images to achieve the automatic identification of the opening and closing status of the switches, but it cannot realize the automatic identification of the reliability of the opening and closing of the switches.

[0010] 3. "A method for identifying the reliability of opening and closing of the knife switch based on image pattern recognition" uses image pattern recognition technology to achieve automatic identification of the reliability of the opening and closing of the knife switch, but this method is only applicable to the horizontal rotation described in the patent type knife switch, not suitable for the type of knife switch described in this article

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