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

Oscillating power acquisition method and device under power grid transient fault

A power grid transient and oscillating power technology, applied to circuit devices, electric power measurement through current/voltage, electrical components, etc., can solve problems such as unbalanced input and output power of equipment

Active Publication Date: 2022-03-22
WUHAN UNIV +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the power electronic equipment is disturbed, the amplitude frequency of the internal potential of the equipment changes with the imbalance of the input and output power of the equipment, and the change of the amplitude frequency of the internal potential through the network will in turn affect the imbalance of the input and output power of the equipment

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
  • Oscillating power acquisition method and device under power grid transient fault
  • Oscillating power acquisition method and device under power grid transient fault
  • Oscillating power acquisition method and device under power grid transient fault

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] The embodiments described here are only used to explain the present invention, not to limit the present invention.

[0046] It is understandable that when the power system oscillates, the excitation acting on the network is essentially a voltage signal whose amplitude and frequency change with time, and the current flowing through the network is also a signal whose amplitude and frequency change with time. , then the power consumed on the network naturally includes the internal cause of the system oscillation, and the extraction of the oscillation power is of great significance for the study of the oscillation mechanism of the power electronic power system.

[0047] refer to figure 1 and figure 2 , the first embodiment of the present invention provides a method for obtaining oscillating power under a power grid transient fault. When a power electronic equipment has a power grid transient fault, the following method for obtaining oscillating power under a power grid tr...

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 method and a device for obtaining oscillating power under grid transient faults. When grid transient faults occur in power electronic equipment, the method first measures the inductance voltage and current of the network inductance branch, and measures the inductance voltage and current respectively. Perform Hilbert transform; then calculate the instantaneous resistance represented by the network inductance branch according to the inductor voltage, current, Hilbert transform voltage parameter, and Hilbert transform current parameter; and calculate the network inductance branch The instantaneous power of ; extract the power consumed by the instantaneous resistance related to the instantaneous resistance from the instantaneous power, and use the power consumed by the instantaneous resistance as the oscillation power. The invention can help to solve the existing problems that the amplitude frequency of the internal potential of the power electronic equipment changes with the imbalance of the input and output power of the equipment, and the change of the amplitude and frequency of the internal potential will adversely affect the input and output power imbalance of the equipment through the network. There are flaws in the technology.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a method and device for obtaining oscillation power under a transient fault of a power grid. Background technique [0002] With the rapid development of new energy generation, new semiconductor materials and control technology, the penetration rate of power electronic converters in the power supply side, transmission network and load side of the power system is getting higher and higher. However, the continuous increase of power electronic equipment and its capacity in the power system has led to an obvious trend of power electronics in the power system, which has caused system oscillation problems related to power electronic equipment to appear in the power system. [0003] At present, the research on the oscillation mechanism mainly stays in the research on the characteristics of the equipment. The oscillation form mainly considers the oscillation inside the power ele...

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): G01R21/06H02J3/00
CPCG01R21/06H02J3/00H02J2203/10
Inventor 陶亮田震孙建军查晓明黄萌段方维刘芮彤
Owner WUHAN 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