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Partial discharge source location method and device in transformer, and server

A positioning method and transformer technology, applied in the direction of testing dielectric strength, etc., can solve the problems of low accuracy of transformer and low accuracy of acoustic signal calculation, and achieve the effect of improving accuracy and optimizing calculation method.

Active Publication Date: 2019-06-21
STATE GRID SHANDONG ELECTRIC POWER +1
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Problems solved by technology

However, due to the influence of various interference factors, the calculation accuracy of the arrival time of the existing acoustic signal is low, which leads to the low accuracy of the positioning method of the partial discharge source in the transformer

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  • Partial discharge source location method and device in transformer, and server
  • Partial discharge source location method and device in transformer, and server
  • Partial discharge source location method and device in transformer, and server

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Embodiment Construction

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] The insulation system is the main component of the power transformer, and the integrity of the insulation system plays a decisive role in the safe operation of the transformer. The insulation system may have some inherent defects, and failures caused by external stresses such as short circuits, lightning strikes or transients of switching operations may also destroy the insula...

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Abstract

The present invention provides a partial discharge source location method and device in a transformer, and a server. The method comprises the steps of: collecting acoustic signals generated by partialdischarge in a transformer by employing a plurality of acoustic sensors arranged at preset positions of the transformer; performing noise reduction processing of the acoustic signals corresponding tothe each acoustic sensor; according to the signal energy or the information amount of the acoustic signals after noise reduction processing, determining the time length of each acoustic sensor receiving the acoustic signals; and according to the position and the time length of each acoustic sensor, determining the position of the partial discharge source in the transformer. In the invention, thereference time point when each acoustic sensor starts to collect signals at the same time as reference to determine the time length of each acoustic sensor receiving the acoustic signals, and therefore, the relative time mode facilitates optimization of the late computing mode of partial discharge source location in the transformer so as to improve the accuracy of partial discharge source locationin the transformer.

Description

technical field [0001] The invention relates to the technical field of transformer detection, in particular to a method, a device and a server for locating a partial discharge source in a transformer. Background technique [0002] Partial Discharge (PD) detection is an effective non-destructive method for evaluating the state of an insulation system. On the one hand, partial discharge detection can be used to detect the size and type of partial discharge signal, and on the other hand, it can be used to locate the source of partial discharge. Timely and accurate determination of the location of the partial discharge source will help to detect equipment defects in time, prevent accidents, and help arrange maintenance plans and reduce maintenance costs. [0003] In related technologies, according to the arrival time of the acoustic signal generated by the partial discharge, the position of the partial discharge can be determined in three-dimensional space, that is, the locatio...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
Inventor 马驰王伟哲戚祥李彬赵祥龙高涛
Owner STATE GRID SHANDONG ELECTRIC POWER
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