Wind power field maintenance part selection method based on set power generating capacity
A technology for repairing parts and wind farms, which is applied in the field of wind farm repair parts selection taking into account the power generation of the unit, and can solve the problems of low maintenance urgency and reduced reliability
Active Publication Date: 2015-04-01
XIANGTAN UNIV
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On the other hand, wind turbines can operate with fault tolerance for some faults, even if the reliability of components is reduced to a certain extent, the urgency of maintenance is not prominent
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[0029] like figure 1 As shown, the maintenance urgency of the mechanical components of the unit is related to the current reliability coefficient of the mechanical component, and the current reliability coefficient of the mechanical component is determined by the rated power of each unit, the historical active power data of each unit, the historical wind speed data of each unit, the mechanical The service life of the components and the historical maintenance data of each unit are determined, and these values are related to the fatigue damage.
[0030] Fatigue damage is the main cause of damage to mechanical components of the unit. According to the linear accumulation theory of fatigue, fatigue damage can be accumulated linearly according to its source. The source of fatigue damage to the mechanical parts of wind turbines can be divided into two parts. The first part is caused by the stress and strain caused by the aerodynamic force, gravity, friction, dynamic balance, etc. ...
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The invention discloses a wind power field maintenance part selection method based on set power generating capacity. The method is mainly characterized in that, when a part or certain parts in a wind power field is in fault or is maintained, maintenance for other parts is further carried out incidentally, and the other parts which are maintained incidentally are determined through steps as follows, 1), the reliability coefficient of each machinery part of each set is calculated according to rated power, historical active power and historical wind speed information of each wind power set in the wind power field, and service life and historical maintenance data of each set machinery part; 2), maintenance urgency of each part of each set is determined according to the tolerable fault reliability and the intolerable fault probability in the service life of each machinery part of the set in combination with the reliability coefficient of each machinery part; and 3), the present maintenance capacity subtracts fixed maintenance amount to form the present maintenance capacity overmeasure, and maintenance objects are determined according to the big to small order of the maintenance urgency according to the overmeasure. The method can reduce maintenance times of the wind power field and reduces maintenance cost.
Description
technical field [0001] The invention relates to a method for selecting mechanical components during wind farm maintenance, in particular to a method for selecting wind farm maintenance components considering the generating capacity of a unit. Background technique [0002] Affected by the randomness of wind speed and the dynamic nature of its own state, the mechanical components of wind turbines are subjected to complex alternating loads, and their internal defects continue to form, accumulate and develop, and lead to gradual deterioration and damage of material properties, requiring timely maintenance. Because wind farms are generally located in remote locations, even in harsh sea conditions, and wind turbines are located on towers that are tens of meters or even hundreds of meters high, they usually need to rely on large engineering facilities such as large cranes, gondolas, and helicopters to carry out mechanical operations. For the maintenance of components, the rental pr...
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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/20G06Q50/06Y04S10/50
Inventor 苏永新段斌李启航谭貌姚子力
Owner XIANGTAN UNIV