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

Method and device for realizing high-voltage ride through based on rotor series current-limiting resistor

A current-limiting resistor and high-voltage technology, applied in the field of electric power, can solve problems such as voltage surges

Active Publication Date: 2020-05-29
SICHUAN UNIV
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the present invention provides a method and device for realizing high-voltage ride-through based on the rotor string current-limiting resistance, which solves the problem of voltage sudden generation in the recovery stage of low-voltage faults

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
  • Method and device for realizing high-voltage ride through based on rotor series current-limiting resistor
  • Method and device for realizing high-voltage ride through based on rotor series current-limiting resistor
  • Method and device for realizing high-voltage ride through based on rotor series current-limiting resistor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0096] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, only a part of the embodiments of the present invention, not all the embodiments, and are not intended to limit the present invention.

[0097] The inventors found that in the field of fault research on doubly-fed wind turbines, the research results on doubly-fed wind turbines are mainly divided into two categories: one category improves the operating capability of the unit by optimizing the control strategy, and maximizes the control capability of the converter; The other is to ensure that the unit does not go off-grid by improving the topology of the hardware circuit.

[0098] However, the current research on faults...

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 provides a method and a device for realizing high-voltage ride through based on a rotor series current-limiting resistor, and relates to the field of electric power. The method comprisesthe steps that when a sensor detects that a voltage of a power grid side reaches a high-voltage preset threshold value, a disconnection signal is sent to a controller, and the controller makes a thyristor be disconnected so that a rotor series current-limiting resistor is put into operation; when the sensor detects that the power grid side voltage reaches arated voltage, a closing signal is sentto the controller; and the controller makes the thyristor be closed so that the rotor series current-limiting resistor is cut off, and high-voltage ridethrough of a doubly-fed wind turbine generator is realized. According to a scheme of the invention, the rotor series current-limiting resistor is put into operation in a voltage sudden generation stage and is connected with a rotor of a fan in series so that an overcurrent of the rotor of the fan caused by voltage sudden generation is limited, reactive power support can be provided for a power grid side, pulsation of a torque is reduced, and aproblem of voltage sudden generation in a low-voltage fault recovery stage is solved.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a method and device for realizing high-voltage ride-through based on a rotor string current-limiting resistor. Background technique [0002] At present, in the field of DFIG fault research, the research results of DFIG are mainly divided into two categories: one is to improve the operation capability of the unit by optimizing the control strategy, and maximize the control capability of the converter; the other is By improving the topology of the hardware circuit, it is ensured that the unit does not go off-grid. [0003] However, the current research on faults only considers the single fault analysis of voltage sag or swell, and does not take into account the impact of voltage surge in the recovery stage of low-voltage faults. Contents of the invention [0004] In view of the above problems, the present invention provides a method and device for realizing high-voltage ride-throug...

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 Applications(China)
IPC IPC(8): H02J3/38H02J3/16H02P9/00H02P9/10H02P101/15
CPCH02J3/16H02P9/007H02P9/102H02P9/105H02P2101/15Y02E40/30
Inventor 周步祥张越严雨豪陈鑫黄河张致强袁岳李祖钢
Owner SICHUAN 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