Temperature-resistance curve acquisition apparatus of distribution transformer winding and method thereof

A technology for distribution transformers and windings, which is applied to measuring devices, measuring electrical variables, and measuring resistance/reactance/impedance, etc. Effect

Active Publication Date: 2015-09-16
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] What the present invention aims to solve is the problem of low accuracy of the obtained temperature-resistance curve of the distribution transformer winding

Method used

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  • Temperature-resistance curve acquisition apparatus of distribution transformer winding and method thereof
  • Temperature-resistance curve acquisition apparatus of distribution transformer winding and method thereof
  • Temperature-resistance curve acquisition apparatus of distribution transformer winding and method thereof

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Embodiment Construction

[0048] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0049] figure 1 It is a structural schematic diagram of a device for obtaining a temperature-resistance curve of a distribution transformer winding provided by an embodiment of the present invention. The device for obtaining a temperature-resistance curve of a distribution transformer winding includes a voltage sampling module, a wireless temperature sensor 12 and a single-chip microcomputer 13 .

[0050] The voltage sampling module is adapted to sample the voltage difference across the winding L0 of the distribution transformer, and the winding L0 of the distribution transformer has been heated to obtain voltage sampling data. In this embodiment, the voltage sampling module includes a constant current source 10 and an analog-to-digital converter 11 .

[0051]The constant cur...

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Abstract

A temperature-resistance curve acquisition apparatus of a distribution transformer winding and a method thereof are disclosed. The temperature-resistance curve acquisition apparatus of the distribution transformer winding comprises a voltage sampling module, a wireless temperature sensor and a single chip microcomputer, wherein the voltage sampling module is used to sample a voltage difference of two ends of the heated distribution transformer winding so as to acquire voltage sampling data; the wireless temperature sensor is used to sample a temperature of the heated distribution transformer winding so as to acquire temperature sampling data; the single chip microcomputer is used to convert the voltage sampling data into resistance sampling data; according to the resistance sampling data and the temperature sampling data, a curve of changes of direct current resistances of the distribution transformer winding along with the temperatures is generated. By using the temperature-resistance curve acquisition apparatus of the distribution transformer winding and the method provided in the invention, the single chip microcomputer is used to carry out synchronization on data of an analog-digital converter and data sampled by the wireless temperature sensor so that accuracy of a temperature-resistance curve of the distribution transformer winding is increased.

Description

technical field [0001] The invention relates to the technical field of power supply equipment detection, in particular to a device and method for obtaining a temperature-resistance curve of a distribution transformer winding. 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 stand...

Claims

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Application Information

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IPC IPC(8): G01R27/02
Inventor 何良苏明虹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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