On-line calculation method and device for wind power plant additional power under frequency disturbance working condition

Abstract

The invention relates to the technical field of new energy access and control, particularly provides an on-line calculation method and device for wind power plant additional power under a frequency disturbance working condition, and aims to solve the technical problem of inaccurate calculation of the increasable power of the wind power plant. In the calculation process of the additional power of the wind power plant, according to a frequency support control mode which is adopted when a wind turbine generator participates in system frequency adjustment, support time corresponding to the frequency support control mode and the active power of each wind turbine generator after the frequency support control mode is finished, the method determines the output active power of the wind power plantin the control period of the frequency support control mode, and further calculates the additional power of the wind power plant. According to the scheme, on the basis of considering the active powerof each wind turbine generator after the frequency support control mode is ended, the additional power of the wind power plant in the frequency support process is calculated from two perspectives of inertia response and primary frequency modulation, and the calculation error of the additional power of the wind power plant is reduced.

Description

technical field [0001] The invention relates to the technical field of new energy access and control, in particular to an online calculation method and device for increasing power of a wind farm under frequency disturbance conditions. Background technique [0002] As the proportion of wind power in the power system is getting higher and higher, the impact of wind power on the safe and stable operation of the power grid is increasing, and the grid source coordination ability of wind power has also received more and more attention. The grid-connected performance has been regulated. In terms of frequency support, the power system requires wind power to have inertia response and primary frequency modulation control capabilities. The inertia response control technology mainly releases the rotor kinetic energy of the wind turbine to achieve a rapid response to the grid frequency drop. At the same time, this technology can also increase the contribution of wind power active power ...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the above-mentioned defects, the present invention is proposed to provide an online calculation method and device for increasing the power of the wind farm under frequency disturbance conditions, which solves or at least partially solves the technical problem of inaccurate calculation of the increasing power of the wind farm

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