Method for Establishing Dynamic Simulation Model of General Wind Turbine Generating Set

Abstract

A method for establishing a dynamic simulation model of a general-purpose wind power generating set, the method comprising the steps of: (1) establishing a wind speed model including basic wind, gust wind, gradual change wind, noise wind and on-site recorded wind speed; (2) establishing a multi-mass fan and (3) Establish a doubly-fed induction generator model with rotor-side AC-DC-AC conversion inverter; (4) Establish a model for adjusting the yaw system, wind turbine pitch angle and generator rotor current Control system model. The invention solves the dynamic model requirement of random fluctuating power supply brought by new energy access in the development process of the power grid at the present stage, and provides an effective tool for solving the impact of electric railway access system and wind farm with impact load, In order to improve the power supply quality of the power grid, improve the design and manufacture of wind turbines and parameter setting, and enhance the operation reliability of the power grid, it provides a reference.

Description

technical field [0001] The invention belongs to the technical field of power system power quality analysis, in particular to a method for establishing a dynamic simulation model of a general wind power generating set. Background technique [0002] Compared with traditional power generation methods, wind power generation has unpredictable wind speed and is constantly changing. Therefore, the wind energy provided by wind turbines to the grid is also random and fluctuating, and it is difficult to adjust. As the proportion of wind farm capacity in the system continues to increase, the impact of wind power on the system will become more and more significant. This random, difficult to predict, and changing wind energy feeding into the grid will have a non-negligible impact on the power quality of the grid. The traditional simulation platform lacks an effective model that can describe the random dynamic behavior of wind turbines, and cannot simulate the impact of wind turbines on ...

AI Technical Summary

Problems solved by technology

The traditional power analysis program based on the model developed by conventional electrical components is not enough to accurately simulate the dynamic behavior of wind turbines under complex load environments, and lacks effective tools for in-depth research on the impact of power quality on the grid in the modern grid environment

[0004] Traditional simulation software usually uses classic asynchronous generators to replace the simulation model of wind turbines. Although it can reflect the operating characteristics of wind turbines to a certain extent, it is difficult to study the power quality related to the interaction between wind power and the power grid under complex load conditions. There is a big deficiency in the problem

Especially when domestic electrified railways are connected to the power grid and impact random loads are introduced, it is not enough to simulate the dynamic behavior of wind turbines caused by grid harmonics, voltage fluctuations and flicker, and frequency fluctuations

It is also impossible to simulate the impact of random fluctuating wind power output power on the grid

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