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A Digital Transformer Thermometer

A technology for transformers and thermometers, which is applied to thermometers, thermometer parts, thermometers using electrical/magnetic components directly sensitive to heat, etc., can solve problems such as affecting the reliability of transformers, laborious time for transformer temperature billing, and affecting measurement accuracy.

Active Publication Date: 2022-05-10
FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The publication time is December 21, 2011, and the Chinese patent with the publication number CN 102288316 A: digital transformer winding temperature measurement device, attempts to provide a solution with high measurement accuracy, high degree of automation, and easy installation and use; however, due to the need for top layer oil Once the existing scheme fails to find the deviation defect of the oil temperature sensor in time, it will inevitably affect its measurement accuracy
In addition, the current inspection of transformer thermometers is not only time-consuming and laborious, but also easily affects the reliability of transformer operation due to back and forth disassembly and assembly.

Method used

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Embodiment Construction

[0044] The drawings are for illustration only, and should not be construed as limitations of this patent;

[0045] It should be clear that the described embodiments are only part of the embodiments of this application, but not all of them. Based on the examples in the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without creative labor belong to the scope of protection of the embodiments of this application.

[0046] Terms used in the embodiments of this application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of this application. The singular forms "a", "said" and "the" used in the embodiments of this application and the appended claims are also intended to include many forms, unless the context clearly indicates other meaning. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more ass...

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Abstract

The present invention proposes a digital transformer thermometer. By increasing the sampling of the transformer environment temperature, the simulated value of the top layer oil temperature can be obtained in combination with the load current, which can be compared with the sampled value of the top layer oil temperature to realize the self-inspection of the oil temperature sensor. At the same time, the present invention obtains the winding temperature value based on the load current, so the inspection involved only needs to inspect the accuracy of the current sampling value and check the parameter settings; therefore, the transformer thermometer of the present invention can realize online rapid inspection without power failure, and reduce errors link, to solve the time-consuming and labor-intensive inspection of existing transformer thermometers and to affect the reliability of transformer operation, and to detect deviation defects in time to ensure the performance of transformer thermometers.

Description

Technical field [0001] The invention relates to the technical field of sensing detection of power equipment, in particular to a digital transformer thermometer. technical background [0002] During the operation of the transformer, the loss causes heat, which increases the oil temperature and winding temperature of the transformer. Knowing the oil temperature and winding temperature of transformer in time is of great significance to the economic and safe operation of transformer. Chinese patent published on December 21, 2011 with the publication number of CN 102288316 A: Digital transformer winding temperature measuring device, trying to provide a scheme with high measurement accuracy, high automation degree and convenient installation and use; However, due to the need to sample the top oil temperature, once the existing scheme fails to find the deviation defect of the oil temperature sensor in time, it will inevitably affect its measurement accuracy. In addition, at present, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K7/18G01K1/024
CPCG01K7/18G01K1/024
Inventor 张健能李春阳莫靖刘小波梁丽雪唐鹤谭梓荣王明方王志刚洪贞贤阮博文邱楠海张万昌劳锦富麦志彦
Owner FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID