A wind turbine energy sensing and control method

Abstract

The invention discloses a wind turbine energy perception and control method, comprising the following steps: S1, establishing an estimation model of wind turbine energy in a wind turbine unit according to actual measurement data; S2, inputting the current actual measurement data and the wind turbine model into the estimation The model obtains the estimated result; S3, according to the estimated result, control the wind turbine unit to connect to the grid or control the wind turbine unit to maintain an idling state; wherein, the measured data includes the measured speed of the wind turbine and the speed corresponding to the same time point of the measured speed Air density. In the present invention, by measuring the rotational speed and air density of the wind turbine and combining with the model, the power generation of the wind turbine can be accurately estimated. And according to the estimated result, the wind turbine is controlled to be connected to the grid or to maintain an idling state.

Description

technical field [0001] The invention belongs to the field of power system control, and in particular relates to a wind turbine energy perception and control method. Background technique [0002] Since the wind is produced by the air flow caused by the difference in atmospheric pressure, the wind direction and the size of the wind are changing all the time. Wind power generation has the characteristics of volatility, intermittent and randomness. The power fluctuations of wind turbines caused by these characteristics will have an impact on the overall operation of the regional power grid, which in turn will affect the voltage stability in the entire regional power grid. Therefore, when wind farms, especially large-capacity wind farms, are connected to the grid, it will bring certain hidden dangers to the safe and stable operation of the entire power system. At the same time, these fluctuating, intermittent and random characteristics will also seriously affect the power gener...

AI Technical Summary

Problems solved by technology

The power fluctuations of wind turbines caused by these characteristics will have an impact on the overall operation of the regional power grid, which in turn will affect the voltage stability in the entire regional power grid

Therefore, when wind farms, especially large-capacity wind farms, are connected to the grid, it will bring certain hidden dangers to the safe and stable operation of the entire power system.

At the same time, these fluctuating, intermittent and random characteristics will also seriously affect the power generation efficiency and service life of wind turbines

[0003] However, the energy of wind turbines can be estimated through wind information, but the wind information is complex, including wind speed and wind direction information, and the obtained wind information is not very accurate, so the predicted result will not be an accurate prediction result

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