Dynamic compensation method for active power of wind turbine generator

Abstract

A dynamic compensation method for the active power of a wind turbine generator comprises the following steps: 1) measuring the real-time active power Pout output by the wind turbine generator through a power grid measurement module, and calculating the 10s average value Pout_Avg10s of the real-time active power; 2) calculating the deviation between the active power output by the wind turbine generator and the rated power; 3) calculating the integral regulation quantity of an active power compensation factor; (4) judging a full working condition; 5) selecting the active power compensation factor; and 6) taking the product of the rated power and the active power compensation factor as the reference power. The active power output by the wind turbine generator can be dynamically compensated, so that the wind turbine generator can stably output according to rated power, and the stability and safety of a power grid are ensured.

Description

technical field [0001] The invention relates to the technical field of wind power generation control, in particular to a dynamic compensation method for active power of a wind turbine. Background technique [0002] When the wind turbine is running, in addition to the external output of electric energy, the yaw motor, pitch motor, oil pump motor, cooling fan and other auxiliary equipment in the unit will also consume electric energy. This part of the consumed electric energy is called the self-consumption of the wind turbine. Electricity. Under different wind conditions and temperatures, the self-consumption power of the wind turbine will change accordingly due to the different operating states of the power-consuming equipment of the wind turbine. [0003] The wind turbine generator controls the output of active power through the converter according to the command of the torque regulator. Below the rated wind speed, that is, the minimum wind speed at which the wind turbine ...

AI Technical Summary

Problems solved by technology

In recent years, as the single-unit capacity of wind turbines continues to increase, the power of various auxiliary equipment also increases, and the self-consumption power of wind turbines, as well as the variation range of self-consumption power, will also increase accordingly. The increased self-consumption The change of power consumption will cause the active power output by the wind turbine to fluctuate, so that the wind turbine cannot output stably according to the rated power, such as Figure 4 As shown, which in turn affects the wind farm as a whole and cannot output stably according to the design capacity

Therefore, if this is not controlled, the active power output by wind turbines will fluctuate more and more due to changes in self-consumption under full-power conditions, which will seriously affect the stability and safety of the power grid.

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