Method and system for selecting installation position of ultrahigh frequency sensor on transformer
A UHF sensor and installation location technology, applied in the field of transformers, can solve the problem that UHF sensors do not have installation standards and other problems
Pending Publication Date: 2022-05-31
STATE GRID HEBEI ELECTRIC POWER RES INST +2
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However, there is currently no uniform installation standard for UHF sensors
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[0039] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0040] At present, the research on UHF sensors mainly focuses on the generation mechanism, propagation characteristics and UHF partial discharge localization methods of UHF signals. These studies cannot provide a theoretical basis for the arrangement of UHF sensors on transformers. Moreover, the only part of the research on the installation position ...
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The embodiment of the invention discloses a method and system for selecting the installation position of an ultrahigh frequency sensor on a transformer. According to the scheme, the method comprises the steps that a transformer model is built in simulation software, and the positions of detection points and the positions of partial discharge points in a transformer are divided according to the transformer model; simulation is carried out in simulation software, and ultrahigh frequency signal waveforms received by the detection points when partial discharge occurs at different positions are obtained; the maximum amplitude of an electromagnetic wave signal detected by each sensor at each detection point is extracted from the ultrahigh frequency signal waveform, a detection point set is determined according to the maximum amplitude, and the maximum amplitude of the detection points in the detection point set is larger than a first preset value; and determining a first detection point of which the amplitudes of the electromagnetic wave signals at the plurality of partial discharge points are greater than a second preset value from the detection point set, wherein the position corresponding to the first detection point is the position for installing an ultrahigh frequency sensor.
Description
technical field [0001] The present application relates to the technical field of transformers, in particular to a method and system for selecting an installation position of a UHF sensor on a transformer. Background technique [0002] With the continuous advancement of the smart grid, a large number of intelligent technologies have begun to be applied to traditional primary equipment. Among them, in order to be able to detect the faults that occur in the transformer at the first time, a large number of online monitoring technologies have begun to integrate with the transformer, making the fault detection of the transformer more intelligent. The online monitoring of transformers is inseparable from the use of various sensors. The sensor converts electrical signals, acoustic signals, and optical signals generated by various faults in the transformer into digital signals, and uploads them through optical fiber, etc., and finally processes and analyzes them on the server, and f...
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IPC IPC(8): G01R31/12G01R31/62
CPCG01R31/1227G01R31/62Y02E60/00
Inventor 高树国赵军田源岳国良孟令明相晨萌王丽丽王庚森
Owner STATE GRID HEBEI ELECTRIC POWER RES INST