A Fault Diagnosis Method for Power Transformer Windings Based on Vibration Distribution Characteristics
A power transformer, winding fault technology, applied in the field of signal processing, can solve the problem of no power transformer winding fault diagnosis method, etc.
Active Publication Date: 2020-07-31
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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[0006] The embodiment of the present invention provides a power transformer winding fault diagnosis method based on vibration distribution characteristics, which solves the problem that the current transformer state detection method based on vibration analysis method is basically used for experimental analysis and research, and cannot be applied to the actual transformer on site. Technical Problems of a Set of Fault Diagnosis Methods for Power Transformer Windings Based on Vibration Analysis
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[0027] The embodiment of the present invention provides a power transformer winding fault diagnosis method based on vibration distribution characteristics, which is used to solve the problem that the current transformer state detection method based on vibration analysis method is basically used for experimental analysis and research, and cannot be applied to the actual transformer on site. Technical problems of a set of power transformer winding fault diagnosis methods based on vibration analysis method.
[0028] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present i...
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An embodiment of the invention discloses a fault diagnosis method for a winding of a power transformer based on a vibration distribution characteristic, which solves the technical problem that currently a transformer state detection method based on a vibration analysis method is basically used in the experimental analysis and research and a fault diagnosis method for a winding of a power transformer based on a vibration analysis method does not exist for application to an actual transformer on the site. The method in the embodiment of the invention comprises the steps of obtaining an input voltage signal of a power transformer, a load current signal and a vibration signal of the surface of a fuel tank of the power transformer by synchronous sampling; calculating the characteristic quantity of vibration distribution under different loads according to the input voltage signal, the load current signal and the vibration signal; and judging whether a winding of the power transformer is faulty according to the characteristic quantity.
Description
technical field [0001] The invention relates to the technical field of signal processing, in particular to a method for diagnosing faults of power transformer windings based on vibration distribution characteristics. Background technique [0002] Large power transformers are one of the key equipment used in the power industry, and their health directly affects the safety, reliability and economic benefits of power transmission in the grid system. The main components of the transformer include the winding and the iron core, both of which are the source components of the transformer vibration and the main fault components of the transformer. Most of the serious faults of transformers are caused by windings, which often lead to huge economic losses and serious environmental pollution. Therefore, the research on faults of transformer windings has significant practical significance. [0003] When the transformer is running, the input voltage causes the iron core to vibrate due t...
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IPC IPC(8): G06Q50/06G01D21/02
CPCG01D21/02G06Q50/06
Inventor 杨毅刘石高庆水张楚金格田丰邓小文杜胜磊
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID