Supercharge Your Innovation With Domain-Expert AI Agents!

Extended CDA (Critical Damping Adjustment) method-based electromagnetic transient simulation method of power system

An electromagnetic transient simulation and critical damping technology, applied in design optimization/simulation, electrical digital data processing, special data processing applications, etc., can solve problems such as numerical oscillation, achieve strong damping characteristics, and avoid numerical oscillation problems.

Inactive Publication Date: 2018-11-06
CHINA THREE GORGES UNIV
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a power system electromagnetic transient simulation method based on the extended critical damping adjustment method, which can effectively solve the numerical oscillation problem existing in the implicit trapezoidal integral method, and its numerical calculation Accuracy is better than CDA method

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
  • Extended CDA (Critical Damping Adjustment) method-based electromagnetic transient simulation method of power system
  • Extended CDA (Critical Damping Adjustment) method-based electromagnetic transient simulation method of power system
  • Extended CDA (Critical Damping Adjustment) method-based electromagnetic transient simulation method of power system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] An electromagnetic transient simulation method for power systems based on the extended critical damping adjustment method. Under normal system conditions, the extended critical damping adjustment method uses the implicit trapezoidal integral method for calculation, and the value is only calculated when a sudden change occurs in the system, such as switch operation or line failure. The integration algorithm was switched to a new linear multistep method with L-stability to eliminate numerical oscillations. Since the absolute value of the main coefficient of the truncation error of the 4-step new linear multi-step method is smaller than that of the backward Euler method, the 4-step new linear multi-step method and the implicit trapezoidal integral method are used together to form the extended critical damping adjustment method, and It is used in the electromagnetic transient simulation of power system.

[0045] A power system electromagnetic transient simulation method bas...

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 an extended CDA (Critical Damping Adjustment) method-based electromagnetic transient simulation method of a power system. According to the method, under normal circumstances of the system, an extended CDA method is calculated by adopting an implicit trapezoidal integration method; a numerical integration algorithm is switched to a new linear multistep method with L-Stability only when sudden changes occur in the system, such as switching operation and line fault and the like, to eliminate numerical oscillation; and the absolute value of a principal coefficient of the truncation error of a four-step new linear multistep method is smaller than that of a backward Euler method, so that the extended CDA method is composed of the four-step new linear multistep method andthe implicit trapezoidal integration method and applied to the electromagnetic transient simulation of the power system. The method disclosed by the invention has the advantages that the numerical oscillation problem of the implicit trapezoidal integration method can be effectively solved and the numerical calculation accuracy of the method is better than that of the CDA method.

Description

technical field [0001] The invention relates to an electromagnetic transient simulation method of a power system, in particular to an electromagnetic transient simulation method of a power system based on an extended critical damping adjustment method. Background technique [0002] Electromagnetic transient calculation is to study the change process of electric field and magnetic field and the corresponding voltage and current in each component of the power system. Its main purpose is to study the transient overvoltage and overcurrent that may occur after power system failure or operation. In the calculation of electromagnetic transient analysis, considering factors such as nonlinearity of components, electromagnetic coupling, wave process of long lines, three-phase asymmetry of lines, and frequency characteristics of line parameters, it is necessary to establish differential equations or partial differential equations of the system, and These equations are discretized with ...

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): G06F17/50
CPCG06F30/20
Inventor 王永张磊雷小林饶华兴李强谭炜东
Owner CHINA THREE GORGES UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com