Wind turbine generator reactive power regulation method and system based on air quenching cooler (AQC) of wind power plant

Abstract

The invention relates to a wind turbine generator reactive power regulation method and system based on an air quenching cooler (AQC) of a wind power plant. The wind turbine generator reactive power regulation method includes: issuing reactive setting instructions; collecting wind power plant grid-tied point information of a wind power plant, and calculating reactive power fluctuation and requirement of a grid-tied point of the wind power plant; collecting switching state, fault state and input content data of an integrated reactive compensation device; timely issuing the data to all wind turbine generators in the wind power plant; using master control of the wind turbine generators and reactive power of the whole wind power plant or a unit main transformer boosting side as the reference to achieve stand-alone reactive closed loop control. The wind turbine generator reactive power regulation system comprises a grid electrical power system, a boosting station monitoring system, a fan monitoring system and a wind power plant grid-tied point reactive power measuring device. The wind turbine generator reactive power regulation method and system can achieve reactive deployment in the wind power plant and give reactive supporting capability to power grids, reduce input capacity and operation loss of the wind power plant integrated reactive compensation device to the largest extent and save purchasing input cost.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a method and system for adjusting reactive power of wind turbines based on wind farm AQC. Background technique [0002] Most of the current wind farms are located in relatively remote areas, far away from the main power grid, and need to be connected to the power grid through long-distance transmission lines. This weak grid connection of wind farms has attracted extensive attention for voltage control, reactive power management, dynamic angle stabilization, and behavior of wind turbines after grid disturbances. In order to ensure the safe and stable operation of the grid, the requirements for the operation of grid-connected wind turbines are getting higher and higher. At present, grid operators require that the wind farm itself can adjust the reactive power and voltage of the grid access point under the normal operating conditions of the grid. Reactive power compen...

AI Technical Summary

Problems solved by technology

Since the core algorithm of AQC is implemented on the central control host computer server, the real-time control of the host computer server is poor, and the closed-loop adjustment lags seriously

[0005] It can be seen that there are obvious deficiencies and defects in the reactive power regulation system in the prior art. Therefore, how to create a reactive power system based on wind farm AQC that can reduce the operating cost of the wind farm and realize real-time closed-loop regulation? The adjustment method and system are really one of the important research and development topics at present.

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