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A calibration method for uhf partial discharge measuring device

A measuring device and partial discharge technology, which is applied in the direction of measuring devices, measuring electrical variables, testing dielectric strength, etc., can solve problems such as GIS insulation damage, and achieve the effect of avoiding excessive attenuation

Active Publication Date: 2020-03-27
CHINA ELECTRIC POWER RES INST +4
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Problems solved by technology

[0002] UHF partial discharge detection is an effective means to measure the insulation status of GIS. It is used to quantitatively measure the electric field signal of GIS partial discharge. If the UHF partial discharge detection device cannot effectively detect the internal discharge of GIS, it will cause damage to the GIS insulation, resulting in related the occurrence of the accident

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  • A calibration method for uhf partial discharge measuring device

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Embodiment Construction

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0027] The embodiment of the calibration method of a kind of UHF partial discharge measuring device provided by the present invention is:

[0028] 1. Build a field strength measurement system.

[0029] Such as figure 1 As shown, the field strength measurement system of this embodiment includes a radio frequency signal source, a power amplifier, a GTEM cell, a reference field strength meter and a spectrum analyzer. in,

[0030] 1. RF signal source

[0031] The radio frequency signal source is connected with the power amplifier...

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Abstract

The invention provides a method for calibrating a UHF partial discharge measurement device, which comprises the steps of 1, constructing a field strength measurement system; 2, placing the UHF partial discharge measurement device and a reference field strength meter in the field strength measurement system, and measuring the field strength of the same electric field; and 3, comparing output signals of the UHF partial discharge measurement device and the reference field strength meter, and determining the measurement accuracy of the UHF partial discharge measurement device. Compared with the prior art, the method provided by the invention for calibrating the UHF partial discharge measurement device avoids a problem that a radio frequency signal source is too great in attenuation in the measurement environment and difficult to be controlled through building a relatively stable electric field environment.

Description

technical field [0001] The invention relates to the measurement field of high-voltage power transmission and transformation engineering body maintenance equipment, in particular to a calibration method for a UHF partial discharge measurement device. Background technique [0002] UHF partial discharge detection is an effective means to measure the insulation status of GIS. It is used to quantitatively measure the electric field signal of GIS partial discharge. If the UHF partial discharge detection device cannot effectively detect the internal discharge of GIS, it will cause damage to the GIS insulation, resulting in related Accidents happen. The operation experience shows that the measurement performance of various types of UHF partial discharge detection devices at home and abroad is uneven at this stage, and there is an urgent need for an effective calibration method for UHF partial discharge measurement devices to calibrate various UHF partial discharge detectors. Conte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/00G01R31/12
CPCG01R31/12G01R35/005
Inventor 周玮雷民陈迪侯兴哲张军卢欣王斯琪汪泉卢冰付济良刘方明陈习文王旭郭子娟齐聪匡义朱赤丹余雪芹陈彬梁星李松浓
Owner CHINA ELECTRIC POWER RES INST
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