Combined control method and device based on torsion slip ring temperature change and unit power

Abstract

The invention provides a combined control method based on torsion slip ring temperature change and unit power. The combined control method comprises the following steps that temperature information is collected at multiple points on the periphery of a torsion slip ring; based on all the collected temperature information analysis, the temperature information with the maximum value is extracted to generate real-time temperature data; based on the real-time temperature data, it is judged that if the temperature is less than the first set temperature, a wind turbine generator operates at the rated power; if the temperature is greater than or equal to the first set temperature and less than the second set temperature, the wind turbine generator runs in a capacity reduction mode; if the temperature is greater than or equal to the second set temperature, the wind turbine generator set is shut down due to overtemperature failure; and wherein the first set temperature is less than the second set temperature. According to the combined control method, the unit power is adjusted by the temperature change of the torsion slip ring, a mode of reducing the power capacity of the wind turbine generator instead of directly shutting the wind turbine generator down is adopted, fire disasters or equipment damage accidents caused by over-high temperature of the torsion slip ring are avoided, and the generating efficiency and generating capacity of the unit are effectively improved.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a combined control method and device based on temperature variation of torsional slip rings and unit power. Background technique [0002] Traditional wind turbines usually use torsion cable connection at the yaw platform, which is prone to problems such as cable wear and sliding, and this method cannot achieve continuous yaw without dead ends, and the power generation efficiency is low, reducing the power generation of wind turbines . Using a torsional slip ring can solve the above problems, but the torsional slip ring and the cable are connected by carbon brushes, so the contact resistance of the connection position is extremely high, and the temperature rise of the components must be strictly monitored. In the actual application of the existing wind power generator set, the temperature change of the torsional slip ring is not related to the power of the unit. If ...

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Problems solved by technology

[0003] Aiming at the defects in the prior art, the present invention provides a joint control method and device based on the temperature change of the torsional slip ring and the power of the unit to solve the problem that the temperature change of the torsional slip ring is not related to the power of the unit in the actual application of the existing wind power generating set. technical problem

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