Double-fed wind turbine generator set wind power plant simulation system and simulation method and device

Abstract

The invention provides a doubly-fed wind turbine generator set wind power plant simulation system and simulation method and device, and the system comprises a doubly-fed wind turbine generator set single-machine model module which carries out the simulation of the single-machine grid connection of a doubly-fed wind turbine generator set, receives an externally given wind speed signal and a power grid fault signal, and outputs a three-phase alternating current and wind power; a power system transmission line model module used for simulating a power system transmission line in a wind power plantand carrying out long-distance transmission on the three-phase alternating current and the wind power output by the doubly-fed wind turbine generator stand-alone model module; and a power grid modelmodule used for simulating a power grid model merged into the wind power plant and realizing simulation modeling of the doubly-fed wind turbine generator wind power plant. The doubly-fed wind turbinegenerator set wind power plant simulation system and simulation method and device are a modular wind power plant modeling technology, and meet the requirement of wind power plant modeling. From the perspective of wind power plant modeling, a wind power plant modeling mode of a whole set of system is given through modular packaging, and the application space is wider.

Description

technical field [0001] The present invention relates to the technical field of wind power generation modeling, in particular to a wind farm simulation system, simulation method and equipment for double-fed wind turbines. Background technique [0002] With the recent rapid development of clean energy represented by wind power and photovoltaic power generation, the power system is undergoing a transformation from centralized power generation to distributed power generation systems. The continuous improvement of the domestic energy demand and the sharp increase in the demand for energy, the traditional energy will not be able to meet the growing energy demand, so vigorously developing new energy including wind power will be an important development direction in the next step. [0003] In the field of wind power generation, the doubly-fed induction generator (DFIG) is widely used at present, which realizes AC excitation to the rotor through the power electronic converter, and ca...

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Problems solved by technology

[0006] The Chinese invention patent application with the application number 201410709230.5 "A Modeling Method and Device for Doubly-fed Wind Turbines" proposes a type matching and characteristic matching method for doubly-fed wind turbines. The method and device can use the initial parameters to determine the Identify parameters, but this method only solves the problem of single machine grid connection, but it cannot give the modeling method of wind farm from the perspective of wind farm modeling, so it has certain limitations

[0007] The Chinese invention patent application with the application number 201910794434.6 "A method and system for fault ride-through control of offshore double-fed wind turbines" proposes a fault ride-through control method and system for offshore double-fed wind turbines. The fault ride-through problem of wind turbines under grid conditions, but it cannot solve the modeling and analysis problems at the wind farm level

[0008] At present, there is no description or report of similar technology to the present invention, and no similar information has been collected at home and abroad

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