Method for comprehensive judgment of abnormal temperature rise of offshore wind turbine transformer

Abstract

The invention discloses a method for comprehensive judgment of abnormal temperature rise of an offshore wind turbine transformer. The method includes: background general situation arrangement and analysis, to be more specific, knowing process parameters of the transformer, previous operating conditions and the like; inspection and test analysis, to be more specific, after sampling of abnormally burnt fault components in the transformer, adopting various devices for test analysis by various physicochemical test means; comprehensive discussion and analytic determination, to be more specific, distinguishing failure mechanisms of abnormal temperature rise of the transformer, and discussing relation of the failure mechanisms to find out failure reasons and provide solutions. By comprehensive analysis of abnormal temperature rise of the offshore wind turbine transformer, novel ablation morphological characteristic reference and failure mechanism theoretical support are provided, the failurereasons of the transformer can be accurately determined, and effective solutions are provided. The method is beneficial to quick and accurate determination of failure modes and mechanisms in abnormaltemperature rise of offshore wind turbine transformers under other operating conditions, the failure root causes can be found out, and the targeted solutions are provided.

Description

Technical field [0001] The invention belongs to the technical field of safety detection of offshore wind power generation systems, and particularly relates to a comprehensive judgment method for abnormal temperature rise of a transformer of an offshore wind power generator. Background technique [0002] In the past few decades, problems such as traditional energy consumption and environmental pollution have become increasingly serious. my country is constantly developing and using renewable energy. Wind energy, as one of the clean energy sources, has received more and more attention and applications. As an important carrier for converting wind energy, wind turbines not only have an important strategic position in my country's economic development, but also an important cornerstone to ensure stable power supply in cities. Compared with onshore wind power, offshore wind power has more abundant resources, and has the advantages of high power generation efficiency, large installed ca...

AI Technical Summary

Problems solved by technology

At the end of 2016, it was discovered that the transformer of one of the offshore wind turbines had an abnormal temperature rise and eventually burned during operation. After careful inspection of other wind turbines, it was found that more than 30 units also had abnormal temperature and resistance rises. In the case of combustion, although the combustion has not yet occurred, it must be shut down for replacement.

At present, there is no systematic comprehensive failure analysis and judgment method for the abnormal temperature rise of such offshore wind turbine transformers at home and abroad, and it is difficult to accurately analyze the abnormal temperature rise of transformers

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