A simulation model and method for medium- and long-term active power coordinated control of wind turbines

Abstract

The invention provides a simulation model and a method of long-term active power coordination control in a wind generation set. The simulation model comprises an input signal receiving module, a signal selection processing module, a working point determining module and a selection executing module, wherein the input signal receiving module, the signal selection processing module, the working point determining module and the selection executing module are connected in sequence. The input signal receiving module receives the input planning curve of scheduling and AGC real-time regulation command signals of the wind generation set, the signal selection processing module obtains the target output of the wind generation set, the working point determining module determines the rotating speed corresponding to the target output of the wind generation set, and the selection executing module determines the operation area of the wind generation set and makes a choice of carrying out pitch angle control or active power control over the wind generation set. The simulation model and the method of the long-term active power coordination control in the wind generation set can reflect the fact that the wind generation set actively participates in the adjustment of a power system in the active power and the frequency, and carries out peak adjustment by matching with AGC and scheduling output, and provides the basis for researching the dynamic behavior of the wind generation set after grid connection.

Description

Technical field [0001] The invention relates to the field of power system simulation modeling, and in particular to a simulation model and method for medium and long-term active power coordinated control of wind turbines. Background technique [0002] In recent years, many large-scale wind power bases have been built and put into operation, and large-scale wind power grid operation has brought huge economic benefits. At the same time, it has also changed the original power supply structure. The impact of wind power on the grid is also increasing, and it is no longer limited. Because it affects the reactive power and voltage of the power grid in some areas, it rises to affect the frequency stability and active power balance of the large power grid. Therefore, the power grid has put forward higher requirements on active power control, peak shaving, and frequency modulation after large-scale wind power is connected. [0003] The active power control of wind power has clear requiremen...

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Problems solved by technology

[0004] In actual engineering, when simulating and analyzing the dynamic behavior of large-scale wind farms connected to the grid, there is still a lack of models for the automatic control of active power of wind turbines and the cooperation between wind farms and grid AGC

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