Partial discharge signal direction finding method and system based on circular UHF sensor array
An ultra-high frequency sensor and discharge signal technology, applied in the field of direction finding, can solve problems such as high hardware requirements and electromagnetic wave arrival time difference, and achieve the effects of low hardware requirements, ingenious conception, and simple and easy implementation.
Active Publication Date: 2021-10-22
STATE GRID SHANDONG ELECTRIC POWER COMPANY RIZHAOPOWER SUPPLY +2
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[0003] At present, partial discharge is one of the important reasons for equipment failure. In recent years, the monitoring and positioning of partial discharge in open substation space has received some attention and research. The existing UHF partial discharge space positioning technology is mainly Based on the arrival time difference of electromagnetic waves, however, the prior art method requires very high time synchronization accuracy and sampling rate, which will result in extremely high hardware requirements
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[0037] The method and system for finding the direction of partial discharge signals based on a circular UHF sensor array according to the present invention will be further described according to specific embodiments and accompanying drawings, but this description does not constitute an improper limitation to the technical solution of the present invention.
[0038] figure 1 It is a structural schematic diagram of a partial discharge signal direction finding system based on a circular UHF sensor array in some embodiments of the present invention.
[0039] Such as figure 1 As shown, the partial discharge signal direction finding system based on the circular UHF sensor array includes N UHF sensors S uniformly arranged on the circumference of a circle 1 , S 2 , S 3 …S N And a signal acquisition and processing device connected with each UHF sensor data.
[0040] For the specific structure of the UHF sensor, please refer to Figure 2 to Figure 3 . in, figure 2 From a certai...
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The invention discloses a partial discharge signal direction finding method based on a circular UHF sensor array, which comprises the steps of: arranging several UHF sensors evenly on the circumference of a circle to form a circular UHF sensor array sensor array; use the several UHF sensors to receive UHF partial discharge signals at the same time; find the extreme value in the received UHF partial discharge signals; judge the characteristic by the angle of the UHF sensor that collects the extreme value Direction of the high-frequency partial discharge signal. In addition, the present invention also discloses a partial discharge signal direction finding system based on a circular UHF sensor array, which includes: a circular UHF sensor array including several UHF sensors uniformly arranged on the circumference of a circle A high-frequency sensor array and a signal acquisition and processing device connected with UHF sensor data. The method for finding the direction of the partial discharge signal accurately and quickly obtains the location where the partial discharge signal occurs in a simple and easy-to-implement manner.
Description
technical field [0001] The invention relates to a direction finding method and system, in particular to a partial discharge signal direction finding method and system. Background technique [0002] In the electric power industry, the status inspection and diagnosis of electric equipment can improve the efficiency of maintenance, effectively discover potential hidden dangers of equipment, and detect power failures in time, thereby effectively avoiding major accidents. [0003] At present, partial discharge is one of the important reasons for equipment failure. In recent years, the monitoring and positioning of partial discharge in open substation space has received some attention and research. The existing UHF partial discharge space positioning technology is mainly Based on the arrival time difference of electromagnetic waves, however, the methods in the prior art require very high time synchronization accuracy and sampling rate, which will result in extremely high requireme...
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IPC IPC(8): G01R31/12
Inventor 任力孙兴华李鹏王晓梅贾廷波郑楠孙安青金昌峰卢洋肖笋秦昊
Owner STATE GRID SHANDONG ELECTRIC POWER COMPANY RIZHAOPOWER SUPPLY