Equivalent modeling method based on wind speed distribution characteristics in wind power plant

A technology of distribution characteristics and equivalent modeling, applied in the field of value modeling, it can solve the problems of uneven distribution of wind speed, large difference between the operating points of generator sets, and poor equivalent accuracy of wind farms, and achieve the effect of simplifying the electrical model.

A technology of distribution characteristics and equivalent modeling, applied in the field of value modeling, it can solve the problems of uneven distribution of wind speed, large difference between the operating points of generator sets, and poor equivalent accuracy of wind farms, and achieve the effect of simplifying the electrical model.

CN103558768AActive Publication Date: 2014-02-05TSINGHUA UNIV +2
7 Cites 20 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Equivalent modeling method based on wind speed distribution characteristics in wind power plant
  • Equivalent modeling method based on wind speed distribution characteristics in wind power plant
  • Equivalent modeling method based on wind speed distribution characteristics in wind power plant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The technical solution of the present invention will be further described in detail below according to the drawings in the description and in combination with specific embodiments.

[0023] In this application, the "cluster" refers to a group of wind turbines after coherent equivalence, each of which only presents the mechanical characteristics of the group; "single machine" refers to each independent power generation unit in practice. unit, that is, a wind turbine and a generator; "single machine electrical equivalent model of wind field" or "single machine equivalent model" refers to the equivalent circuit and The interface after the control parameters are coupled; it is assumed that the units in each wind farm are the same type of wind turbines, and the control methods and control parameters are exactly the same.

[0024] see figure 1 , figure 1 The flow chart of the equivalent modeling method based on the wind speed distribution characteristics in the wind farm pr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an equivalent modeling method based on wind speed distribution characteristics in a wind power plant. The equivalent modeling method comprises the following steps: acquiring the topological structure of a target wind power plant; performing grouping on wind turbines in the plant according to the terrain condition, wherein each group includes a plurality of wind turbine clusters; establishing a simplified mechanical model for each wind turbine cluster; establishing an equivalent single-generator electrical model of the whole wind field comprising a coil wound rotor asynchronous generator state space model, wherein the stator side is directly connected with an equivalent unit transformer, and the rotor side is connected with an equivalent back-to-back converter; and setting the set value of the voltage of a direct-current bus to be the same as the voltage of a single generator, wherein the pulse width modulation control strategy of the power grid side and the rotor side is replaced with an equivalent controlled voltage source, and an equivalent converter model is established. The modeling method can be used to better satisfy requirements of practical applications.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
05 Feb 2014
Publication
CN103558768A