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

Primary frequency modulation feedback channel nonlinear link parameter configuration method and system

A parameter configuration method and frequency modulation feedback technology are applied in circuit devices, AC network circuits, controllers with specific characteristics, etc., and can solve the problem that the parameter determination method needs to be studied.

Active Publication Date: 2019-11-22
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
View PDF8 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for multi-machine systems, the method of determining the parameters of multiple nonlinear links on the same channel still needs to be studied

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
  • Primary frequency modulation feedback channel nonlinear link parameter configuration method and system
  • Primary frequency modulation feedback channel nonlinear link parameter configuration method and system
  • Primary frequency modulation feedback channel nonlinear link parameter configuration method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0058] The application will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present application.

[0059] A parameter configuration method for the nonlinear link of the primary frequency modulation feedback channel of the present application is aimed at the primary frequency modulation models (such as hydropower, thermal power and DC FC primary frequency modulation models) that contain the "dead zone-PID controller-limiting" link.

[0060] The following is an example of conventional primary frequency regulation of hydropower to illustrate the embodiment. The block diagram of the conventional primary frequency regulation of hydropower is as follows: figure 2 shown. Among them, the main channel of the transfer function is a stand-alone system model, Heq is the inertia time constant of the genera...

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 primary frequency modulation feedback channel nonlinear link parameter configuration method and system, and aims at a primary frequency modulation model containing a dead zone-PID controller-amplitude limiting link; the configuration method comprises the following steps: representing a nonlinear link through a description function; determining a nonlinear link gain; and according to the improved Nyquist criterion, determining the stability range of specific parameters of a single nonlinear link and the dead zone-PID controller-amplitude limiting link. According to theinvention, a reference scheme is provided for primary frequency modulation dead zone amplitude limiting link parameter setting in practical application; meanwhile, according to the improved Nyquist criterion, a curve is used for replacing an original single feature point, and compared with a traditional Nyquist criterion, the influence of the internal structure of the nonlinear link on system stability can be better reflected.

Description

technical field [0001] The invention belongs to the technical field of power systems, and relates to a parameter configuration method and system for a nonlinear link of a primary frequency modulation feedback channel. Background technique [0002] For the primary frequency regulation process of the existing power system, there are some key nonlinear links in the parameter model. After the optimization and transformation of the ultra-low frequency oscillation governor in the Southwest Power Grid, its ability to participate in the grid frequency regulation is reduced, and the frequency fluctuation range of the grid is reduced. And the frequency limit increases, the frequency crosses the FM adjustment dead zone once, the number of limiting times increases, and the influence of the nonlinear link is prominent. The previous linear system analysis method is difficult to carry out effective analysis. [0003] At present, for the dead zone in engineering practice, the parameter sele...

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): H02J3/00H02J3/24G05B11/42
CPCG05B11/42H02J3/00H02J3/24
Inventor 齐郑张坤俊李鸿毅陈刚史华勃
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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