A wind farm power controller

Abstract

Disclosed is a wind power plant power controller. The power controller comprises a central processing unit, a power supply module, a power grid detection module, a communication module, an abnormality processing module, an active frequency control module and a reactive voltage control module, wherein the central processing unit is connected with the power supply module, the power grid detection module, the communication module, the abnormality processing module, the active frequency control module and the reactive voltage control module separately; the wind power plant power controller is mounted in a booster station, and the power controller, a wind turbine, a reactive compensation apparatus, a booster station monitoring system, a wind power plant monitoring (SCADA) system and a dispatching center main station form a wind power plant power control system network; and the wind power plant power controller receives active and voltage instructions from the dispatching center main station or underground in a communication way, performs unified cooperative control on the wind turbine, the reactive compensation apparatus, and a transformer gap gear, performs active power and reactive power regulation, and realizes stable control on frequencies and voltages.

Description

technical field [0001] The invention relates to a wind farm power controller. Background technique [0002] As my country's installed capacity of wind power continues to increase, the proportion of wind power in the grid is increasing. However, due to the intermittent, fluctuating and random characteristics of wind power, it is impossible to control its active and reactive power like conventional power sources. The specific difficulties are manifested in: the fluctuation of the active output of the wind farm and its own lack of frequency regulation capability make the frequency stability of the power grid worse; the wind turbine has no mechanical inertia to the power grid, which has a negative effect on the stability of the power system; Shutdown causes frequency fluctuation and voltage fluctuation to the power grid. These problems have seriously affected the safety and economy of the power system, and are one of the main technical difficulties in the integration of wind p...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the disadvantages of poor real-time performance, low precision, lack of frequency modulation capability, and uneven fatigue distribution between wind turbines in the existing wind farm control technology, and propose a wind farm power controller (WPPC)

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