Receiver and method for ultrahigh frequency partial discharge detection

A partial discharge detection and partial discharge technology, which is applied in receiver monitoring and other directions, can solve problems such as image spectrum interference, affecting receiver sensitivity and reliability, and achieve strong anti-interference, low signal distortion, and improved sensitivity.

Pending Publication Date: 2021-06-29
BEIJING GUODIANTONG NETWORK TECH CO LTD +2
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Problems solved by technology

[0003] In the partial discharge receiver of the frequency mixing system, since the received partial discharge signal is a real signal, the spectrum of the real signal is a conjugate symmetrical double sideband, and there is an image spectrum. Therefore, when using simple real number mixin

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  • Receiver and method for ultrahigh frequency partial discharge detection
  • Receiver and method for ultrahigh frequency partial discharge detection
  • Receiver and method for ultrahigh frequency partial discharge detection

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[0046] In order to make the objects, technical solutions, and advantages of the present disclosure, the present disclosure will be described in detail below with reference to the accompanying drawings.

[0047] It should be noted that the technical terms or scientific terms used in the disclosed embodiments, unless otherwise defined, the technical terms used in the disclosure of which should be understood by those who have general skills in the art of the present disclosure. The "first", "second" and similar words used in the embodiments of the present disclosure do not represent any order, quantity, or importance, but only to distinguish different components. Similar words to "include" or "include", meaning that the elements or objects of the previously mentioned previously enumerated elements or objects that appear later in the word, without excluding other elements or objects. Similar words such as "Connect" or "Connect" are not limited to physical or mechanical connections, bu...

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Abstract

The invention provides a receiver for ultrahigh frequency partial discharge detection. The receiver comprises a first mixer and a second mixer which respectively mix a partial discharge real signal with a first local oscillator signal and a second local oscillator signal to obtain a first intermediate frequency signal and a second intermediate frequency signal, and the phase of the second local oscillator signal is 90 degrees ahead of that of the first local oscillator signal; a first anti-aliasing filter which is used for filtering the first intermediate frequency signal; a first analog-to-digital converter which is used for converting the filtered first intermediate frequency signal into a first digital signal at a sampling frequency; a second anti-aliasing filter which is used for filtering the second intermediate frequency signal; a second analog-to-digital converter which is used for converting the filtered second intermediate frequency signal into a second digital signal at the sampling frequency; a delayer which delays the second digital signal by 1/4 clock period; and an adder which is used for adding the first digital signal and the delayed second digital signal to obtain a partial discharge digital signal.

Description

technical field [0001] The present disclosure relates to the technical field of power detection, and in particular to a receiver and method for ultra-high frequency partial discharge detection. Background technique [0002] The existing ultra-high frequency partial discharge detection technology and products have the advantages of anti-corona interference, high detection sensitivity, and anti-environmental interference. The system also has high-fidelity partial discharge phase information and anti-interference functions. [0003] In the partial discharge receiver of the frequency mixing system, since the received partial discharge signal is a real signal, the spectrum of the real signal is a conjugate symmetrical double sideband, and there is an image spectrum. Therefore, when using simple real number mixing, the RF When the signal moves to the zero-IF, the image spectrum and the useful spectrum move to the zero-IF at the same time, causing image spectrum interference, whic...

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Application Information

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IPC IPC(8): H04B17/20
CPCH04B17/20
Inventor 周寒冰张传远谢士银李雨王永贵高振伟王丹丹宋修鹤卢哲杨夏祎陈亚天陈学良
Owner BEIJING GUODIANTONG NETWORK TECH CO LTD
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