Predictive maintenance method of offshore wind power based on probabilistic stochastic deterioration model of wind turbines

Abstract

The invention discloses a predictive maintenance method of offshore wind power based on a probabilistic stochastic deterioration model of wind turbines, which comprises the following steps: taking power characteristic curve of benchmark wind turbine as expectation, calculating absolute error between power value of same type wind turbine and power value of benchmark wind turbine in each wind speedinterval; taking absolute error as the random variable and obeying normal distribution, establishing the stochastic model; calculating the mean and standard deviation of the error, and judging whetherthe fan has potential failure or not according to the mean and standard deviation; judging the health status of the other wind turbines in the wind farm, making the maintenance plan of offshore windpower according to the potential failure of each wind turbine, and realizing the predictive maintenance of offshore wind power. The invention provides an auxiliary decision-making method applicable tooffshore wind power maintenance work, which analyzes the health state of the wind turbine, identifies the wind turbine with potential failure, and formulates an offshore wind power maintenance plan according to the wind turbine, thereby efficiently completing the offshore wind power maintenance work.

Description

technical field [0001] The invention belongs to a wind farm maintenance method, in particular to an offshore wind power predictive maintenance method based on a fan probability random degradation model. Background technique [0002] my country has a long coastline and abundant wind energy resources. The offshore wind energy resources alone are three times the exploitable amount of onshore wind power. Offshore wind power generation has many advantages, such as strong sea and stable wind speed; saving land cost, little impact on residents; small offshore wind shear, no need to build high towers, etc., and has increasingly become a new form of energy with strategic significance. However, in the practice of building and operating offshore wind farms, it is found that due to the particularity and complexity of the environment and climate in which offshore wind farms are located, it is difficult to implement traditional wind turbine maintenance methods, and the maintenance costs r...

AI Technical Summary

Problems solved by technology

For offshore wind farms, the formulation of the maintenance plan should comprehensively consider the sea state and sea conditions, and the ocean climate changes rapidly and complexly. On the one hand, sudden changes in sea conditions often lead to early termination of maintenance work

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