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Oscillatory wave test system

A testing system and oscillating wave technology, applied in testing circuits, testing dielectric strength, etc., can solve the problems of large size, high cost of testing systems, and limited measurement objects

Active Publication Date: 2021-09-07
GUANGDONG POWER GRID CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an oscillatory wave test system to solve the technical problems of high cost, large volume, low precision, high restrictions on measurement objects, and complicated control of the test system caused by the use of attenuated oscillating AC voltage in the prior art

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Embodiment Construction

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0039] It should be understood that the step numbers used herein are only for convenience of description, and are not intended to limit the execution order of the steps.

[0040] It should be understood that the terminology used in the description of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in this specification and the appended claims, the singular forms "a", "an"...

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Abstract

The invention discloses an oscillatory wave test system which comprises a pulse generator, a Marx main topology circuit, an output control module and a low-voltage direct-current power supply module; the Marx main topology circuit adopts a full-bridge inversion topological structure and is used for determining the working state of the pulse generator; the output control module is used for controlling the working state of the Marx main topology circuit; the low-voltage direct-current power supply module is used for supplying power to the pulse generator; the partial discharge detection circuit is used for acquiring an oscillation voltage signal and a partial discharge signal of a detected cable; and the control module is used for sending a control instruction to the pulse generator and processing the received oscillation voltage signal and the partial discharge signal. By adopting the bipolar high-voltage repetition-frequency square-wave pulse generator, disturbance caused by switching action and complexity of oscillation inductance matching and waiting for constant-current source charging are avoided, and the test system has the advantages of being easy to control, small in size, low in cost, short in measurement time and high in precision.

Description

technical field [0001] The invention relates to the technical field of power equipment testing, in particular to an oscillatory wave testing system. Background technique [0002] After the cable is put into operation, a series of factors affecting the safe operation of the cable will appear at any time as the operating time increases, such as mechanical shock, insulation damp, chemical corrosion, abnormal temperature, etc. These factors will gradually reduce the insulation strength of the cable, and form local defects in the early stage, and finally evolve into faults, seriously affecting the normal operation of the power grid. Therefore, cable troubleshooting is very important. [0003] At present, the troubleshooting of cables is mainly through the partial discharge test, and the current health status of the cable is judged by detecting and analyzing the partial discharge signal of the cable. Among them, the commonly used method is the oscillatory wave test system, such ...

Claims

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Application Information

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IPC IPC(8): G01R31/14
CPCG01R31/14
Inventor 汪进锋郑晓光杨贤象阳吕鸿彭发东黄杨珏陈鹏姚瑶金杨夏英男林一峰
Owner GUANGDONG POWER GRID CO LTD
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