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System and method for eliminating external interference based on omnidirectional UHF (Ultra High Frequency) noise sensor

A technology of noise sensor and external interference, applied in the direction of using acoustic measurement for testing, testing dielectric strength, etc., can solve problems such as the inability to effectively suppress external interference signals, the inability to achieve effective signal reception, and the weak ability to receive signals in all directions.

Inactive Publication Date: 2017-01-04
CHINA ELECTRIC POWER RES INST +3
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Problems solved by technology

[0004] However, the detection device used in the existing partial discharge UHF online detection technology is weak in the ability to receive signals in all directions, and cannot effectively receive signals from all directions on the site, so the external interference cannot be effectively suppressed during the field measurement process Signal

Method used

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  • System and method for eliminating external interference based on omnidirectional UHF (Ultra High Frequency) noise sensor
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  • System and method for eliminating external interference based on omnidirectional UHF (Ultra High Frequency) noise sensor

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Embodiment Construction

[0041] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings. The present invention may be embodied in many different forms and is not limited to the embodiments described herein, but these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the teachings of the invention to those skilled in the art. scope. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0042] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The present invention provides a system and method for eliminating external interference based on an omnidirectional UHF (Ultra High Frequency) noise sensor. The system includes the omnidirectional UHF noise sensor which is used for receiving GIS external signals in an omni-directional manner, a signal sensor which is used for receiving the partial discharge signals of a GIS internal insulation defect, a partial discharge acquisition unit which is used for amplifying and converting the partial discharge signals and the GIS external signals, a host computer which judges the attribute of the GIS external signals according to judgment principles and performs processing when the GIS external signals are interference signals so as to eliminate the GIS external signals; and the omnidirectional UHF noise sensor comprises a conical helical antenna plate unit which is composed of a conical helical antenna and a bottom plate and is used for receiving the GIS external signals in an omni-directional manner, a fixture unit which is composed of an epoxy radome and a bottom encapsulating portion and is used for encapsulating the conical helical antenna plate unit, and an N-type connector which is located at the center of the bottom of the fixture unit and is used for transmitting the received GIS external signals to the partial discharge acquisition unit.

Description

technical field [0001] The present invention relates to the technical field of partial discharge ultra-high frequency detection and anti-interference, and more specifically, to a system and method for eliminating external interference based on an omnidirectional ultra-high frequency UHF (Ultra High Frequency) noise sensor. Background technique [0002] Gas-insulated metal-enclosed switchgear (GIS, Gas Insulated Switchgear) is an important part of power grid equipment. GIS has a large number and is widely used in urban power grids. GIS has a compact structure and is very sensitive to internal tiny insulation defects, so it is easy to cause serious accidents of insulation breakdown. Usually, routine inspections for GIS cannot effectively understand the operating conditions of equipment because of the fully enclosed nature of GIS. The on-site maintenance environment of GIS is demanding, the workload of disassembly and assembly is heavy, the power outage time is long, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/1209
Inventor 李金忠王健一吴超唐志国张海波张书琦高飞程涣超汪可刘雪丽孙建涛赵志刚汤浩贾鹏飞郭锐赵晓宇仇宇舟关健昕遇心如申泽军
Owner CHINA ELECTRIC POWER RES INST
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