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

Method for rapidly retraining harmonic oscillation of electric power system

A power system, harmonic oscillation technology, applied in harmonic reduction devices, AC networks to reduce harmonics/ripples and other directions to achieve rapid suppression

Inactive Publication Date: 2013-06-26
王少夫
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on adaptive control methods for power system harmonic suppression

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 for rapidly retraining harmonic oscillation of electric power system
  • Method for rapidly retraining harmonic oscillation of electric power system
  • Method for rapidly retraining harmonic oscillation of electric power system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] The specific steps of the technical solution proposed by the present invention include:

[0029] The block diagram of interconnected two-machine power system is as follows: figure 1 As shown, its mathematical model is:

[0030] (1)

[0031] In the formula is the moment of inertia and damping coefficient; are the electromagnetic power and mechanical power, respectively; power max; is the disturbance power; is the disturbance frequency; is the relative angular velocity; is the relative angle of the generator. make , then formula (1) can be transformed into the following formula:

[0032] (2)

[0033] In the formula . Introduce small parameters ,Make , , , , then Equation (2) can be rewritten as

[0034] (3)

[0035] The system has a chaotic state s...

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 for rapidly retraining harmonic oscillation of an electric power system. The method comprises the steps of at first, giving a principle of a chaos oscillation phenomenon, which occurs in a double-motor interconnected electric power system; and researching a threshold value area where the system generates oscillation and a non-linear oscillation condition by combining a Melnikov method. The method for rapidly retraining the harmonic oscillation of the electric power system is used for quickly restraining the harmonic oscillation of the electric power system by using a simplest self-adaptive controller, so that the conclusion accuracy is verified through a test.

Description

technical field [0001] The invention relates to a fast suppression method for harmonic oscillation of a power system, belonging to the field of electrical engineering. Background technique [0002] The power system is the guarantee for people's daily life and the normal development of the national economy. Chaos is a kind of oscillation phenomenon that may occur in the operation of complex power systems. Once it occurs, it will pose a serious threat to the safe and stable operation of the system. , nonlinear phenomena such as saddle node bifurcation, supercritical, subcritical, Hopf bifurcation, period-doubling bifurcation and chaos have also been found in interconnected power systems. [0003] In order to ensure the safe operation of the power system, this paper presents a second-order nonlinear model of a simple power system, analyzes the mechanism of the chaotic oscillation phenomenon in the system, and studies the threshold area of ​​the system oscillation and its nonlin...

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): H02J3/01
CPCY02E40/40
Inventor 不公告发明人
Owner 王少夫
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