Check patentability & draft patents in minutes with Patsnap Eureka AI!

Control method of doubly-fed wind turbine participating in power grid frequency regulation based on optimal speed power tracking

A double-fed wind turbine and optimal speed technology, which is applied in the direction of generator control circuit, wind power generation, control system, etc., can solve the problems of grid inertia reduction and insufficient frequency modulation ability, and achieve good grid frequency modulation, long duration, and adjustment ability strong effect

Active Publication Date: 2019-12-17
江苏森泰电器有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a doubly-fed wind turbine participating in power grid frequency modulation control method based on optimal speed power tracking, so as to solve the problems of grid inertia reduction and insufficient frequency modulation capability

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Control method of doubly-fed wind turbine participating in power grid frequency regulation based on optimal speed power tracking
  • Control method of doubly-fed wind turbine participating in power grid frequency regulation based on optimal speed power tracking
  • Control method of doubly-fed wind turbine participating in power grid frequency regulation based on optimal speed power tracking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0028] Such as figure 1 As shown, the embodiment of the present invention provides a DFIG-based grid frequency modulation control method based on optimal speed power tracking, including the following steps S1-S9:

[0029] S1. Measure the frequency f of the grid system and calculate the command signal ΔP issued by the power controller of the wind power plant according to the frequency f of the grid system W , the calculation formula is:

[0030]

[0031] In formula (1), f N is the rated value of the system frequency, K p1 is the proportional gain of automatic generation control, K i1 is the integral gain, α W Allocation factor for secondary frequency regulation of wind turbines.

[0032] S2. Measure the elec...

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 optimal rotating speed and power tracking-based method for controlling a doubly-fed fan to participate in power grid frequency adjustment. A signal of a wind power plant power controller is introduced onto an existing pitch angle control module, so that a wind turbine generator set has the capacity of actively responding a command of the wind power plant power controller; an optimal rotating speed and power curve is selected and configured by feeding back a pitch angle signal, so that the economical efficiency and the stability of the doubly-fed fan which participates in the power grid frequency adjustment are improved; adjustment of a pitch angle has the advantages of high adjustment capacity, long duration and the like, so that the doubly-fed fan can well participate in the power grid frequency adjustment.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a control method for doubly-fed wind turbines participating in power grid frequency regulation based on optimal rotational speed power tracking. Background technique [0002] As the main type of grid-connected doubly-fed wind turbine, its power electronic converter shields the coupling relationship between the unit and the grid frequency, so that the wind turbine cannot provide the inertial response capability and frequency modulation capability similar to the synchronous generator. Therefore, a high proportion of wind power connected to the system will inevitably lead to problems such as reduced grid inertia and insufficient frequency modulation capabilities. Therefore, grid-connected guidelines at home and abroad clearly state that grid-connected wind turbines must provide frequency modulation auxiliary services. [0003] Existing research focuses more on the prim...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/46H02J3/38H02P9/00H02P101/15
CPCH02J3/386H02J3/46H02P9/007H02P2101/15Y02E10/76
Inventor 王德林刘柳张俊武马宁宁曾谨科范林源
Owner 江苏森泰电器有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com