Control method for variable pitch automatic lubricating system of megawatt wind power generator unit

Abstract

The invention discloses a control method for a variable pitch automatic lubricating system of a megawatt wind power generator unit. The method comprises the steps of 1, setting time of one lubricating period and the lubricating time needed by the variable pitch system in one lubricating period, and setting the forcible lubricating time and the forcible lubricating interval time; 2, performing normal lubricating; 3, ending the normal lubricating, and counting the time of the lubricating time; 4, judging whether the time of the normal lubricating time is achieved; 5, computing the difference value of the two time points in the step 4, and computing the times for forcible lubricating according to the difference value; 6, performing forcible lubricating; 7, ending the forcible lubricating, judging whether times for the forcible lubricating are achieved after the forcible lubricating time interval; if the result of the step 4 is yes, performing step 2, otherwise performing step 5; and if the result of the step 7 is yes, performing step 2, otherwise performing step 6. The control method for the variable pitch automatic lubricating system of the megawatt wind power generator unit can realize a better lubricating effect on variable pitch bearings and gear rings.

Description

technical field [0001] The invention relates to a control method of a lubricating system, in particular to a control method of a pitch-changing automatic lubricating system of a megawatt wind turbine. Background technique [0002] Wind power has become one of the main forms of new energy utilization, and the installed capacity has grown rapidly. For wind turbine manufacturers, in order to improve the market competitiveness of megawatt-scale wind turbines, it is necessary to improve the quality of the wind turbines and reduce the operation and maintenance costs of the wind turbines. The wind turbine pitch system is an indispensable part of the megawatt wind turbine. For the megawatt wind turbine with the pitch function, the pitch system must be regularly lubricated and maintained. The lubricated parts include the pitch bearing and the pitch Paddle ring. Regular lubrication can reduce the friction during the operation of the pitch control system, reduce the wear of the beari...

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Problems solved by technology

[0006] The lubrication method described in the above patent documents needs to go through a series of complex calculations first, and then lubricate the pitch bearing according to the calculation results, but the calculation methods described in the above patent documents are all carried out under ideal conditions. In actual work, many parts of the formulas of these calculation methods are greatly affected by external environmental factors, which will lead to deviations in the calculation results, thereby affecting the lubrication effect

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