Calculation method for controlling quantitative mapping for large power grid static voltage stability on-line prevention and control

A technology of static voltage stabilization and calculation method, applied in the direction of AC network voltage adjustment, circuit device, AC network circuit, etc., can solve the problem of difficult to meet the real-time requirements of online prevention and control optimization, and achieve improved calculation speed and high calculation accuracy. Effect

Inactive Publication Date: 2019-04-30
SHANDONG UNIV +3
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the scale of the power grid is large, the optimization of prevention and control requires multiple quantitative comparisons of the impact of different control measures on the static voltage stability margin index and the control cost. This indirect calculation is difficult to meet the real-time requirements of online prevention and control optimization.

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
  • Calculation method for controlling quantitative mapping for large power grid static voltage stability on-line prevention and control
  • Calculation method for controlling quantitative mapping for large power grid static voltage stability on-line prevention and control
  • Calculation method for controlling quantitative mapping for large power grid static voltage stability on-line prevention and control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present disclosure. Unless defined otherwise, all technical and scientific terms used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

[0033] It should be noted that the terminology used herein is only for describing specific embodiments, and is not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0034] figure 1 It is a flow chart of a calculation method for regulation and quantification mapping of the on-lin...

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 calculation method for controlling quantitative mapping for large power grid static voltage stability on-line prevention and control. The method includes the following steps:determining a quantitative mapping relationship between control quantity and state quantity based on a power flow equation; calculating a direct quantitative mapping relationship between the state quantity and an equivalent parameter through a Thevenin equivalent parameter identification method of a single state section, and further obtaining a quantitative mapping relationship between the control quantity and the equivalent parameter; and obtaining an analytical quantitative correlation between the control quantity and a stability margin index by combining a mathematical relationship betweenthe equivalent parameter and the stability margin index. The method does not need to calculate a left eigenvector corresponding to a zero eigenvalue of a Jacobian matrix at a critical point, improvesthe calculation speed of a previous method, and has high calculation accuracy.

Description

technical field [0001] The disclosure belongs to the field of electric power systems, and in particular relates to a quantitative mapping calculation method for on-line prevention and control of static voltage stability of a large power grid. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] With the increasingly large scale and complex structure of the interconnected power grid and the advancement of power market reforms, the operating state of the power system is gradually approaching its stability limit, and the increasing proportion of renewable energy such as wind power has led to randomness in the operating state of the system. Therefore, it is urgent to improve the online monitoring and real-time optimization and prevention and control capabilities of the static voltage stability of large power grids. The online prevention and contr...

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): H02J3/12H02J3/16
CPCH02J3/12H02J3/16H02J2203/20Y02E40/30
Inventor 贠志皓崔馨慧刘道伟杨红英邵广惠徐兴伟孙羽
Owner SHANDONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap