Distribution transformer winding material detection system and method

A distribution transformer and detection system technology, which is applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems of low accuracy and high detection cost of distribution transformer winding materials, and achieve the effect of high-accuracy detection and detection cost

Active Publication Date: 2017-12-01
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +2
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Problems solved by technology

[0007] The invention aims to solve the problems of high detection cost and low accuracy of on-site detection of distribution transformer winding material

Method used

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  • Distribution transformer winding material detection system and method
  • Distribution transformer winding material detection system and method
  • Distribution transformer winding material detection system and method

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Embodiment Construction

[0046] As described in the background technology, the Chinese invention patent with the application number 200810158124.7 and the name "Transformer Winding Wire Material Tester and Its Testing Method" discloses that the material of the distribution transformer winding can be judged by comparing the time-resistance curve of the distribution transformer winding. Methods. Since copper and aluminum have different physical quantities such as temperature coefficient, thermal conductivity, specific heat capacity, electrical conductivity, and temperature coefficient of resistance, the DC resistance of distribution transformer windings is different when the distribution transformer windings of different materials are energized for the same time. The material of the distribution transformer winding can be judged by comparing the time-resistance curve of the distribution transformer winding.

[0047] However, the DC resistance of the distribution transformer winding is directly affected ...

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Abstract

The invention provides a distribution transformer winding material detection system and method. The distribution transformer winding material detection system comprises a heating device, a curve acquisition device, a storage device and a matching device, wherein the heating device is for heating a to-be-detected distribution transformer winding; the curve acquisition device is for acquiring a detection curve, changing with the temperature of the winding, of the direct current resistance of the to-be-detected distribution transformer winding; the storage device is for storing a standard curve, changing with the temperature of the winding, of the direct current resistance of a standard distribution transformer winding made of a known winding material; and the matching device is used for matching the detection curve and the standard curve. According to the provided distribution transformer winding material detection system and method, the accuracy for field detection of the distribution transformer winding material is improved through matching of the temperature-resistance curve of the distribution transformer winding.

Description

technical field [0001] The invention relates to the technical field of power supply equipment detection, in particular to a distribution transformer winding material detection system and method. Background technique [0002] With the rapid development of social economy, the power consumption of the whole society is increasing, and the demand for power distribution equipment, especially distribution transformers, is increasing. However, as the price of raw materials has risen in recent years, the price of copper wire has risen sharply, and the production cost of distribution transformers has become higher and higher. However, the sales price of distribution transformers cannot rise at the same rate due to market constraints. In order to reduce operating costs, some irresponsible manufacturers use aluminum wires instead of copper wires as distribution transformer windings, but do not specify aluminum-containing models in accordance with the standard JB3837-2010 "Methods for Mo...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/00
Inventor 苏明虹何良姚晓毛强赵建军胡靖超刘松翔
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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