A time-domain matrix modeling method for full-order doubly-fed wind power generation system

Abstract

The invention discloses a time-domain matrix modeling method for a full-order double-fed wind power generation system, including step S1, establishing a wind turbine model, a phase angle measurer model, a double-fed asynchronous induction motor model, a back-to-back converter and a DC bus. Matrix mathematical model; S2. Establish the control strategy model of the back-to-back converter considering fault ride-through, design the normal / fault current control logic and improve the stator flux linkage control strategy; S3. Build the state space equation of the full-order doubly-fed wind power generation system , and establish a time-domain matrix model. The beneficial effect of the full-order doubly-fed wind power generation system model is that the wind turbine, the doubly-fed motor and the converter are represented by mathematical models, which greatly simplifies the calculation amount without affecting the accuracy of the system. Simplified and aggregated models of the field lay the groundwork.

Description

technical field [0001] The invention belongs to the technical field of new energy in power systems, and relates to a time-domain matrix model of full-order doubly-fed wind power generation. Specifically, it relates to a mathematical model and a time-domain model of a full-order doubly-fed wind power generation system based on a matrix equation and a fault ride-through control strategy. Background technique [0002] As one of the new energy power generation, wind power has become one of the renewable energy sources with the highest degree of scale development, the most mature technology and the fastest development speed in the world today. Wind power occupies an overwhelming advantage in the installed capacity of renewable energy generation in the world, and wind energy accounts for more than half of the renewable energy used. In recent years, wind power technology has developed rapidly all over the world. The wind power generation system is undergoing a period of transitio...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the complexity of modeling the current doubly-fed wind power generation system, build a system matrix model through the evolution of mathematical formulas, and at the same time consider the grid voltage fault ride-through control of the system, and propose a full-order doubly-fed wind power generation system matrix model of

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