Supercharge Your Innovation With Domain-Expert AI Agents!

Full power converter fault ride-through reactive power control method, system, medium and equipment

A fault ride-through and full power technology, applied in reactive power compensation, AC network circuit, AC network voltage adjustment, etc., can solve problems such as insufficient reactive power, and achieve the effect of improving grid-connected reliability

Active Publication Date: 2022-08-02
GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual control of full power converters at present, the reactive power support coefficient given by the reactive current is fixed, and there may be insufficient reactive power in the process of dispatching reactive power in wind farms, which urgently needs to be resolved

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
  • Full power converter fault ride-through reactive power control method, system, medium and equipment
  • Full power converter fault ride-through reactive power control method, system, medium and equipment
  • Full power converter fault ride-through reactive power control method, system, medium and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment discloses a fault ride-through reactive current control method for a full-power converter of a wind turbine, see figure 1 As shown, this method is mainly aimed at large semi-direct drive permanent magnet synchronous wind turbines with full power converters connected to the grid (the main components include gearbox, medium speed permanent magnet synchronous generator, impeller, tower, main control system, pitch systems, full-power converters, step-up transformers, etc.), the use case is that when the wind turbine performs fault voltage ride-through, the control method of variable reactive power support coefficient is adopted. The value of the power support coefficient is given priority to quickly inject reactive current into the grid to support grid voltage recovery, thereby improving the grid-connected reliability of wind turbines. See figure 2 As shown, the method includes the following steps:

[0042] 1) Data collection

[0043] The controller of t...

Embodiment 2

[0054]This embodiment discloses a fault ride-through reactive current control system for a full-power converter of a wind turbine. The system adopts a control method of changing the reactive power support coefficient, and changes the reactive power support in real time according to different fault voltage drop or swell degrees. The value of the coefficient is given priority to quickly inject reactive current into the grid to support grid voltage recovery, thereby improving the grid-connected reliability of wind turbines. See Figure 5 As shown, the system includes a data acquisition module, a fault ride-through operation mode judgment module and a steady-state operation mode control module.

[0055] The data acquisition module collects the effective value of the three-phase voltage and the instantaneous value of the three-phase voltage at the grid-connected point through the controller of the full-power converter; Instantaneous value of three-phase current; use decoupling dou...

Embodiment 3

[0065] This embodiment discloses a storage medium storing a program, and when the program is executed by a processor, the method for controlling the fault ride-through reactive current of a full-power converter of a wind turbine according to Embodiment 1 is implemented.

[0066] The storage medium in this embodiment may be a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a U disk, a removable hard disk, and other media.

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 discloses a full-power converter fault ride-through reactive power control method, system, medium and equipment, which are mainly aimed at large semi-direct drive permanent magnet synchronous wind turbines with full-power converters connected to the grid, which can run in the event of a wind turbine failure. In the state, the control method of variable reactive power support coefficient is adopted, and the value of reactive power support coefficient is changed in real time according to different fault voltage drop or swell degrees, and reactive current is quickly injected into the grid to support the grid voltage, which can realize the flexible fault of the unit. Voltage ride through to improve the grid-connected reliability of wind turbines.

Description

technical field [0001] The invention relates to the technical field of fault voltage ride-through of wind turbines, in particular to a reactive current control method, system, storage medium and computing device for fault ride-through of full-power converters of wind turbines. Background technique [0002] The existing fault ride-through test procedures require that wind turbines should preferentially inject reactive current into the grid to support grid voltage recovery under grid fault conditions. However, in the actual control of the current full-power converter, the reactive power support coefficient given by the reactive current is fixed, and there may be insufficient reactive power during the reactive power dispatching process of the wind farm, which needs to be solved urgently. SUMMARY OF THE INVENTION [0003] The first purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, and to provide a fault ride-through reactive cu...

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): H02J3/16H02J3/38H02J3/00
CPCH02J3/16H02J3/381H02J3/001H02J2300/28Y02E40/30
Inventor 唐彬伟陈烁郭江涛朱敏黄丽玲
Owner GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
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