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High-speed precision signal processing system and method for monitoring high-frequency partial discharge

A signal processing and precision technology, applied in the direction of information technology support system, indicating the existence of current/voltage, etc., can solve the problems of high cost, high power consumption, low detection accuracy, etc., to improve signal accuracy, reduce power consumption and cost , Improve the effect of detection accuracy

Active Publication Date: 2021-02-23
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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Problems solved by technology

[0003] However, the existing wireless monitoring technology detects the time difference of arrival of partial discharge signals through multiple spatially distributed sensors, which has high requirements for sampling speed, which will be accompanied by high power consumption and high cost, and low detection accuracy.

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  • High-speed precision signal processing system and method for monitoring high-frequency partial discharge
  • High-speed precision signal processing system and method for monitoring high-frequency partial discharge
  • High-speed precision signal processing system and method for monitoring high-frequency partial discharge

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Embodiment Construction

[0103] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0104]On the contrary, the invention covers any alternatives, modifications, equivalent methods and schemes within the spirit and scope of the invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the detailed description of the present invention below. The present invention can be fully understood by those skilled in the art without the description of these detailed parts.

[0105] Such as figure 1 As shown, a high-speed precision signal processing system for monitoring high-...

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Abstract

The invention discloses a high-speed precision signal processing system and method for monitoring high-frequency partial discharge, and belongs to the technical field of partial discharge detection ofpower equipment. The high-speed precision signal processing system for monitoring high-frequency partial discharge comprises an antenna, a filter amplification circuit, a zero bias detector, a precision high-speed composite amplifier circuit, a comparator circuit, a monostable trigger circuit and a transistor reset integrator circuit. After partial discharge signals are processed through the precise high-speed composite amplifier circuit, partial discharge imbalance is limited within a certain range, so that signal precision is improved, input of the partial discharge imbalance presents highimpedance, and it is ensured that the sensitivity of the detector cannot be reduced due to loads. On the premise of ensuring large bandwidth and high precision, the requirements for high-speed directconversion and high-speed signal processing are met. T feedback is added, so that useless bias voltage generated after input bias current is amplified by a feedback resistor is reduced under the condition that the frequency of an input signal is fixed.

Description

technical field [0001] The invention relates to a high-speed and precise signal processing system and method for monitoring high-frequency partial discharge, belonging to the technical field of partial discharge detection of power equipment. Background technique [0002] The measurement of partial discharge is a common method to monitor the insulation condition of high voltage equipment. Existing detection methods are mainly divided into two types: wired and wireless, among which the wireless measurement method is very attractive and scalable. [0003] However, the existing wireless monitoring technology detects the time difference of arrival of partial discharge signals through multiple spatially distributed sensors, which has high requirements on sampling speed, which will be accompanied by high power consumption and high cost, and low detection accuracy. Contents of the invention [0004] For the defect of prior art, the object of the present invention is to provide a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/15
CPCG01R19/15Y04S40/126
Inventor 谢成孙翔周金辉谢炜王子凌
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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