Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Control method for stably operating wind power field using double-fed asynchronous generator

A doubly-fed asynchronous and stable operation technology, which is used in motor generator control, electronic commutation motor control, and generator control to achieve the effects of less high-order harmonics, improved stability, and rapid response speed.

Inactive Publication Date: 2007-09-12
SHANGHAI JIAO TONG UNIV
View PDF0 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a wind farm stable operation control method using double-fed asynchronous Doubly-fed asynchronous generators help to provide reactive power compensation for wind turbines in steady state, maintain stable performance of wind turbines under large electrical disturbances, and maintain wind turbines at Stable performance in harsh wind conditions

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 for stably operating wind power field using double-fed asynchronous generator
  • Control method for stably operating wind power field using double-fed asynchronous generator
  • Control method for stably operating wind power field using double-fed asynchronous generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] An embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to Examples described below.

[0017] Wind farms often consist of multiple wind turbines. As shown in Figure 1, multiple wind turbines are equivalent to one equal-power wind turbine IG, and a capacitor C is connected to the terminal of the generator to compensate the reactive power of IG in steady state. The synchronous generator SG and the doubly-fed asynchronous generator DASM are respectively connected to the high-voltage side of the wind turbine IG through a Δ / Y transformer. Table 1 shows the parameters of the generators, and Table 2 shows the initial values ​​of the induction generator IG and the synchron...

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 a control method on stable operation for wind electric field of double-fed asynchronous generator which belongs to technology field of power supply. Its steps are: (1) in the electric system of wind electric field containing double-fed asynchronous generator, multiple wind generating sets are equivalent to one wind generating set with constant power. Condenser is linked to the terminal of the wind generating set to compensate reactive power in steady state. Simultaneously, synchronizing generator and double-fed asynchronous generator are connected with the high-pressure side of the wind generator through Delta / Y transformer separately. (2) rotor current control of double-fed asynchronous generator: rotor current of the double-fed asynchronous generator is confirmed by AC slip frequency. Based on controlling the rotor current, the amplitude and displacement of its stator and the output active or reactive work of the double-fed asynchronous generator are controlled, which will stabilize the output of the wind electric field. The invention can minimize the influence on stable operation of electric system after introducing the wind electric field.

Description

technical field [0001] The present invention relates to a method for controlling the stable operation of a wind farm in the technical field of power supply, in particular to a method for controlling the stable operation of a wind farm using a doubly-fed asynchronous generator (DASM), which solves the problems caused by the connection of the wind farm to the power grid. question. Background technique [0002] In recent years, wind power generation has been widely and highly valued. The number of new wind farms has been increasing and the scale is also expanding. The proportion of wind power generation in the power grid is increasing, which is bound to affect the stable operation of the existing power grid to a large extent. [0003] In the prior art, it is proposed to use a capacitor bank to improve the transient stability of the wind power generation system, but the capacity of the capacitor is fixed. When the output of the wind turbine changes, the reactive power provided ...

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
IPC IPC(8): F03D9/00H02P9/00H02P21/14H02J3/00F03D9/25H02P21/16
CPCY02E10/72
Inventor 武黎王志新
Owner SHANGHAI JIAO TONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com