FATIGUE EVALUATION SYSTEM OF WIND TURBINE GENERATOR FACILITY

Title:

FATIGUE EVALUATION SYSTEM OF WIND TURBINE GENERATOR FACILITY

Document Type and Number:

Japanese Patent JP2016050566

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a fatigue evaluation system of wind turbine generator facility.SOLUTION: A fatigue evaluation system includes an accumulated damage degree calculating portion for calculating an accumulated damage degree Dof each evaluation point in a unit period, a total accumulated damage degree operation portion for operating the total accumulated damage degree Dof the whole evaluation period in each evaluation point by accumulating a result of the calculation by the accumulated damage degree calculating portion over the whole evaluation period, and a fatigue evaluating portion for implementing fatigue evaluation of each evaluation point by comparing the total accumulated damage degree with a threshold value. The accumulated damage degree calculating portion is constituted to operate the accumulated damage degree Don the basis of a following formula. In the formula, N is a number of repetition of fracture corresponding to stress amplitude F, and calculated on the basis of a following formula. In the formula, Nis a number of repetition of fracture corresponding to reference stress amplitude F, and m is inclination of a function indicating a relation between the number of repetition of fracture Nand the stress amplitude Fin information of S-N diagram.SELECTED DRAWING: Figure 7

Inventors:

MIZOUE TAKETO
ICHINOSE HIDEKAZU
MARUYAMA TATSUHIRO

Application Number:

JP2014178158A

Publication Date:

April 11, 2016

Filing Date:

September 02, 2014

Export Citation:

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