Method for evaluating basic noise level of transformer

Abstract

The invention discloses a method for evaluating the basic noise level of a transformer, which comprises the following steps: step 1, calculating the initial noise level of a transformer, the initial noise level of the transformer being the corresponding noise when the transformer is used for the first time; and step 2, based on the working years of the transformer, calculating the noise level of the transformer at the corresponding working years. The method has the advantages that the basic noise level of the transformer caused by the corresponding operation time is calculated according to different operation time of the transformer, so that the basic noise level corresponding to the operation age limit of the transformer can be quickly and conveniently calculated; and an accurate basic noise level is provided for judging the fault state of the transformer based on noise.

Description

technical field [0001] The invention relates to the field of transformer operating state detection, in particular to a transformer basic noise level evaluation method. Background technique [0002] In the power system, as one of the important power equipment, the transformer has a large number, long running time and various specifications, so the failure rate is high. Therefore, it is of great significance to monitor the operating state of the transformer and quickly diagnose faults, and improve the reliability of the transformer operation. During normal operation of the transformer, the noise level is stable in intensity. 1. When the operation status of the transformer is abnormal, the noise intensity will fluctuate in different degrees; 2. With the increase of the service life of the transformer, the noise intensity of the transformer will also change accordingly. The impact of the increase in the service life of the transformer on the noise of the transformer and the no...

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Problems solved by technology

Although these methods are more accurate for the basic noise evaluation of transformers, the calculation methods and implementation schemes are relatively complicated. Based on this, this paper proposes a method for evaluating the basic noise level of dry-type transformers based on nameplate parameters. This method can quickly evaluate the transformer. The basic noise level can evaluate whether the operation status is abnormal according to the basic noise level of the transformer, and the service life of the transformer is considered, so the applicability is good

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