Heating and dehumidifying control method for wind power converter

Abstract

The invention provides a heating and dehumidifying control method for a wind power converter. The method comprises the following steps: S1, acquiring the humidity in a converter control cabinet, the ambient temperature of the converter and the power module temperature of a converter power cabinet; s2, if the humidity in the converter control cabinet is greater than a preset first humidity threshold or the difference between the environment temperature of the converter and the temperature of the power module of the power cabinet is greater than a preset first difference, starting a dehumidification function of the converter; s3, if the temperature of the converter power cabinet power module is less than or equal to a preset first temperature threshold, starting a converter heating function;and S4, when the heating function or / and the dehumidifying function of the converter is / are started, if the converter is running, directly heating and dehumidifying the converter cabinet body, and ifthe converter is not running, prohibiting the converter from being started and heating and dehumidifying the converter cabinet body at the same time. The method can ensure that the humidity and temperature of the converter cabinet, meet the actual operation requirements of a unit, and ensure that the humidity and temperature of each part of the converter are within a reasonable range so as to ensure safe, efficient and stable operation of a converter system.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a method for controlling heating and dehumidification of a wind power converter. Background technique [0002] The wind power converter is one of the core components of the wind power generating set. Whether it can operate reliably and stably is related to the overall operating performance of the generating set. Wind power converters are composed of many electrical components, and many electrical components (such as integrated circuit boards, power electronic devices, capacitors, etc.) have specific requirements for the operating environment, and many electrical components cannot operate at low ambient temperatures (such as : -20 degrees) or high humidity (such as: 90%) to work normally. In regions rich in wind resources in China (such as the three northeastern provinces, Inner Mongolia, etc.), the extreme low temperature can reach about -40 degrees in winter, so it is neces...

AI Technical Summary

Problems solved by technology

Another problem is that when the humidity of the environment where the converter is located is high, the dew point temperature will also change as the temperature changes, and condensation will easily occur, which will cause great harm to the operation of the converter.

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