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Handheld partial discharge detector of transformer

A partial discharge detection and transformer technology, applied in the direction of testing dielectric strength, etc., can solve the problems that the portable partial discharge detector is not fully functional, not suitable for transformer general testing, poor portability, etc., and achieves convenient portable testing, compact structure, The effect of high work efficiency

Inactive Publication Date: 2013-03-13
ELECTRIC POWER RES INST STATE GRID JIANGXI ELECTRIC POWER CO +2
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Problems solved by technology

[0005] The partial discharge detection equipment in the prior art, from the perspective of the domestic market, most partial discharge detectors can only extract a small amount of effective signals from the abundant partial discharge signals, and most of the products are fixed, and the volume is large, the structure Complicated and poor in portability, it is not suitable for general testing of a large number of transformers
In the current market, high-end portable partial discharge detectors are monopolized by some foreign manufacturers of traditional partial discharge detectors. The function of the detector is not perfect, so it is necessary to develop a hand-held detector with relatively low cost, which can eliminate various interferences in the detection process, and judge the strength of partial discharge signals, and has good portability.

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  • Handheld partial discharge detector of transformer
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Embodiment Construction

[0030] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0031] The handheld transformer partial discharge detection device 4 provided according to the present invention includes an ultrasonic sensor 401, a high-frequency current sensor 402, a data acquisition module 41, a signal conditioning unit 42, a data diagnosis and analysis module 43, a data storage module, and a USB communication interface. Among them, the ultrasonic sensor 401 is used to stick on the surface of the transformer to detect the discharge signal from the inside of the device; the hig...

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Abstract

The invention provides a handheld partial discharge detector of a transformer. The handheld partial discharge detector comprises an ultrasonic sensor, a high-frequency current sensor, a data acquisition module, a signal conditioning unit and a data diagnosis and analysis module, wherein the data acquisition module is used for acquiring detection data according to a discharge signal and a high-frequency current pulse signal, wherein the detection data comprise ultrasonic sensor data and high-frequency current sensor data; the signal conditioning unit is used for receiving the detection data transmitted by the data acquisition module and carrying out the pre-process on the detection data to generate data to be analyzed; and the data diagnosis and analysis module is sued for carrying out local discharge detection analysis according to the data to be analyzed. The handheld partial discharge detector of the transformer, disclosed by the invention, can carry out effective detection and analysis on a local discharge signal of the transformer generated to a field transformer and judges whether the interior of the transformer generates local discharge or not through sound and electricity combined analysis, and carries out qualitative estimation on the intensity of the local discharge signal so as to have the advantages of compact structure, handheld type, portability, convenience in detection and the like.

Description

technical field [0001] The invention belongs to the technical field of electric equipment insulation live detection, in particular to a transformer partial discharge detection device, in particular to a hand-held transformer partial discharge detection device. technical background [0002] With the rapid development of my country's power industry construction, the modern power system is developing in the direction of large power grids, large units, ultra-high voltage, and large capacity. In order to ensure the stability and reliability of the power system, more safety requirements for power equipment are also proposed high demands. [0003] In recent years, transformers have been widely used in urban power grids. Once some defects appear in the transformer equipment, equipment failures are very easy to occur. With the increase in the number of transformer substations, the probability of transformer equipment failure is also increasing. In the past, people thought that trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
Inventor 刘明军黄成军万军彪
Owner ELECTRIC POWER RES INST STATE GRID JIANGXI ELECTRIC POWER CO
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