Calibration system and calibration method of partial discharge ultrahigh frequency detection device

A technology of partial discharge and detection device, which is applied in the direction of measurement device, measurement of electrical variables, instruments, etc., to achieve the effect of convenient implementation and simple structure

Inactive Publication Date: 2013-07-17
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
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Problems solved by technology

[0008] The object of the present invention is to provide a calibration system and a calibration method for a partial discharge ultra-high frequency detecti

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  • Calibration system and calibration method of partial discharge ultrahigh frequency detection device
  • Calibration system and calibration method of partial discharge ultrahigh frequency detection device
  • Calibration system and calibration method of partial discharge ultrahigh frequency detection device

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Embodiment Construction

[0031] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0032] figure 1 It is the structural diagram of the calibration system of the partial discharge UHF detection device. Such as figure 1 As shown, the calibration system of the partial discharge UHF detection device provided by the present invention includes a standard antenna, a standard pulse source, a measurement and control computer and a partial discharge UHF detection device to be tested. Wherein, the standard pulse source, the measurement and control computer and the UHF partial discharge detection device to be tested are connected in sequence, and the UHF partial discharge detection device to be tested includes a sensor 3 for collecting voltage signals. The measurement and control computer is used to control t...

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Abstract

The invention discloses a calibration system and a calibration method of a partial discharge ultrahigh frequency detection device in the technical field of online detection of the partial discharge of power transformers and gas insulation combination switch devices. The calibration system comprises a standard antenna, a standard pulse source, a detection and control computer and a partial discharge ultrahigh frequency detection device to be detected, wherein the standard pulse source, the detection and control computer and the partial discharge ultrahigh frequency detection device to be detected are connected sequentially. The partial discharge ultrahigh frequency detection device to be detected comprises a sensor for collecting voltage signals. The calibration system further comprises a coaxial cavity, the coaxial cavity is composed of an outer cylinder, an inner cylinder, two outer cones and two inner cones which are coaxial, and a detection window is arranged in the middle of the outer cylinder. The invention also provides the calibration method with the calibration system. The calibration system utilizes the matched coaxial cavity to replace a small GTEM (Giagahertz Transverse Electromagnetic Cell) for the calibration of the partial discharge ultrahigh frequency detection device, and is simple in structure and easy to implement.

Description

technical field [0001] The invention belongs to the technical field of partial discharge on-line detection of power transformers and gas-insulated combined switchgear (GIS), and in particular relates to a calibration system and a calibration method of a partial discharge ultra-high frequency detection device. Background technique [0002] Take GIS as an example to illustrate. In recent years, GIS partial discharge on-line monitoring system has been widely used in power grids and has formed a certain scale. The main testing principles include the UHF method (abbreviated as UHF in English), and the detection frequency band is between 300MHz and 1500MHz. It is safer for personnel, the system structure is simple, and it is especially suitable for online monitoring, so it has obvious advantages compared with other detection methods. In recent years, a large number of GIS internal defect cases have been discovered through UHF online monitoring and live testing throughout the cou...

Claims

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Application Information

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IPC IPC(8): G01R35/00
Inventor 唐志国李成榕许鹤林张连根卢启付
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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