A transformer temperature control method and transformer
A temperature control method and technology for transformers, which are applied in the field of transformers, can solve the problems of difficult maintenance, few practical applications, and affecting the indication temperature display of a meter.
Active Publication Date: 2021-05-18
NINGBO AUX HIGH TECH
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Problems solved by technology
The controller is generally composed of a controller, a matching device, and a secondary instrument. The cost is relatively high, but the actual application is less, and it is generally not connected to the non-electric control circuit, and because the mechanical part is easy to rust, the potentiometer in the controller is easily damaged. , the meter structure is complex, expensive, and difficult to repair, which seriously affects the local meter indication and the temperature display of the monitoring system
Method used
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[0052] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.
[0053] The terminology used in the present invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein and in the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as use...
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The invention discloses a transformer temperature control method, comprising: collecting the three-phase pile head temperature of the transformer; obtaining the oil surface temperature; calculating the heat dissipation per unit time of the contact part between the bottom surface of the transformer and the supporting part; obtaining the calibration temperature of the oil surface temperature calibration sensor; Judging whether the difference between the oil surface temperature and the calibrated temperature exceeds the standard; calculating the transformer winding temperature and transformer life; judging whether the transformer life exceeds the preset life value; The server calculates the heat dissipation of the transformer shell and the cooling coefficient of the transformer; collects the wind speed of the cooling fan of the transformer; the controller corrects the winding temperature of the transformer according to the collected wind speed of the cooling fan and the cooling coefficient of the transformer; calculates the heat dissipation of the transformer according to the corrected temperature of the winding of the transformer.
Description
technical field [0001] The invention relates to the field of transformers, in particular to a transformer temperature control method and a transformer. Background technique [0002] The power transformer is an important electrical equipment in the power system, and its operation status affects the overall safety and reliability of the power system. Transformer insulation aging due to over-temperature operation of windings accounts for a large proportion of transformer failures in power systems. Therefore, the measurement of transformer oil temperature is extremely important for preventing transformer failures. At present, the measurement of power transformer oil temperature mainly depends on the transformer thermometer and its supporting related devices. In the long-term operation and use process, the accuracy of the thermometer will decrease with the use time, resulting in errors or even errors in the detection results, thus losing effective monitoring of the transformer t...
Claims
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IPC IPC(8): G05D23/20G01K3/14G01K15/00H01F27/08H01F27/40
CPCG01K3/14G01K15/005G05D23/20H01F27/08H01F27/085H01F27/402H01F2027/406
Inventor 陈欢邓飞叶刘天凤常生明曾宇恩
Owner NINGBO AUX HIGH TECH