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

A Method for Active Power Fluctuation Suppression Based on Wind Turbine Operating Conditions

A technology for wind turbines and operating conditions, which is applied in the control of wind turbines, wind turbines, and wind energy power generation, etc., can solve the problems of limiting the fluctuation and smoothing ability of the active power output of the wind turbine, the secondary frequency drop, and the inability of the wind turbine to make full use of the rotational kinetic energy. , to achieve the effect of reducing the number of primary frequency modulation starts, reducing system frequency fluctuations, and improving the grid-connected capability of fans

Active Publication Date: 2021-10-08
NANTONG UNIVERSITY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing technical methods for active power fluctuation stabilization, due to the influence of constant control parameters, the fan cannot make full use of the rotational kinetic energy stored in the rotor, thereby limiting the ability of the fan to stabilize active power fluctuations; in addition, in the low fan rotor speed scenario , Excessive energy release will easily cause the instability of the fan speed, and then cause a serious drop in the secondary frequency; increase the fluctuation of the system frequency, and in severe cases, it will cause the fan to be disconnected and trigger the low-frequency load shedding device to start. Therefore, how to effectively use The rotational kinetic energy of the fan to stabilize the fluctuation of active output is a technology that needs to be solved urgently in the future

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
  • A Method for Active Power Fluctuation Suppression Based on Wind Turbine Operating Conditions
  • A Method for Active Power Fluctuation Suppression Based on Wind Turbine Operating Conditions
  • A Method for Active Power Fluctuation Suppression Based on Wind Turbine Operating Conditions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] The present invention will be described in detail below in conjunction with the accompanying drawings for further explanation, so that those skilled in the art can understand the present invention more deeply and can implement it, but the following examples are only used to explain the present invention, not as the present invention limit.

[0043] Such as figure 1 As shown, a method for stabilizing active output fluctuations based on wind turbine operating conditions includes the following steps:

[0044] S1: Calculate the instantaneous frequency of the system grid according to the voltage of the public coupling point, and start active active power fluctuation stabilization control when the grid frequency changes and exceeds the set dead zone range;

[0045] S2: According to the calculated grid frequency, calculate the system frequency deviation Δf, and judge whether the system frequency deviation Δf is positive or negative;

[0046] S3: Calculate the high-frequency de...

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 the technical field of wind power generators, in particular to a method for smoothing active output fluctuations based on the operating conditions of the wind power generator. The present invention proposes a method for stabilizing active output fluctuations based on the operating conditions of wind turbines, and performs power power stabilization at high-frequency deviation and low-frequency deviation; Active output fluctuations; when there is a low frequency deviation, energy is effectively released to the grid through the rotating part of the fan to suppress active output fluctuations; thus enabling the doubly-fed wind turbine to actively participate in power stabilization, smoothing system frequency fluctuations, and reducing synchronous generators once Number of FM starts.

Description

technical field [0001] The invention relates to the technical field of wind power generators, in particular to a method for smoothing active output fluctuations based on the operating conditions of the wind power generator. Background technique [0002] With the continuous development of wind power generation technology, the installed capacity of wind turbines is increasing day by day; due to the use of advanced power electronic converter devices in double-fed wind turbines, the advantages of maximum power tracking operation and decoupling control of active and reactive power are realized. , but it also leads to the decoupling of the mechanical part of the wind turbine from the grid frequency; the wind turbine cannot provide inertial response like a synchronous motor; especially in the grid-connected system with high wind power penetration, it causes serious system frequency deviation. In addition, compared with conventional thermal power units, wind turbines have poorer abi...

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): F03D7/00
CPCF03D7/00F05B2270/1033F05B2270/304Y02E10/72
Inventor 杨德健华亮张新松
Owner NANTONG UNIVERSITY
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