SCHEDULING USING GENETICALGORITHM FOR MAINTENANCE IN WIND TURBINE EQUIPMENT

摘要

PURPOSE: A wind turbine maintenance scheduling method establishes an optimal scheduling for securing sufficient reserve power, reduces human errors, and decreases maintenance time and cost. CONSTITUTION: In terms of a gene's maintenance time, the genetic shape of initial parent groups is created within a normal distribution not to concentrate on a certain period of time. A share of the demand for reserve power for a wind turbine is calculated. A parent gene is selected according to the demand share. A breeding process or a mutation process is implemented regarding the parent gene. A maintenance schedule is developed as a result of the breeding process or the mutation process. [Reference numerals] (AA) Start; (BB) Define a period that requires maintenance for a whole wind turbine using a gene; (CC) Calculate the share (Y) of the annual maintenance period in a certain period of time (k); (DD) Is k/Y within a normal distribution ?; (EE) Add the result to a value group (initial parent group N); (FF) Define a reserve power value and a reserve power rate; (GG) Select a pair of chromosomes for the reserve power rate; (HH) Generate a first children chromosome by mating the parent chromosomes; (II) Is the reserve power of the first children larger than that of the parent ?; (JJ) Generate a second children chromosome by mutating the parent chromosomes; (KK) Is the first children or the second children fit for the maintenance period requirement ?; (LL) Add the first children or the second children to a children group; (MM) Is the number of the children group identical to the number (N) of the value group ?; (NN) Change the generation; (OO) Is a repetition number ending condition (M) satisfied ?; (PP) Evaluate an optimization rate; (QQ) End