Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for static electric voltage stability analysis

A static voltage and stability technology, applied to electrical components, circuit devices, AC network circuits, etc., can solve problems such as non-convergence and time-consuming calculations

Active Publication Date: 2013-07-31
CHINA ELECTRIC POWER RES INST +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Second, at the critical point (inflection point), the conventional power flow calculation method (corresponding to the Newton-Raphson method for constant power load) does not converge
However, this method is very time-consuming to calculate

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 static electric voltage stability analysis
  • Method for static electric voltage stability analysis
  • Method for static electric voltage stability analysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0103] It can be seen from Table 1 that the static voltage stability margin of Algorithm 1 is 2.352, the static voltage stability margin of Algorithm 2 and Algorithm 3 is 2.355, and the calculation results are basically the same. The calculation time of Algorithm 1 is the shortest, only 1.02 seconds, the calculation time of Algorithm 2 is the longest, up to 15.23 seconds, and the calculation time of Algorithm 3 is between Algorithm 1 and Algorithm 3, up to 4.16 seconds, which can meet the requirements of online operation.

[0104] Table 1 Calculation results of static voltage stability margin

[0105]

[0106] The invention has been described in terms of preferred embodiments. Obviously, various modifications and substitutions will occur to others upon reading and understanding the above detailed specification. It is intended that this application be constructed to include all such modifications and substitutions as come within the scope of the appended claims or their equ...

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 used for analyzing the stability of a static voltage; the characteristics of fast calculation speed of a linear simulation method and the accurate calculation of a continuous tide method are utilized and combined by the method, thus being capable of fast and accurately working out the stable margin of the voltage of an electric network under a certain load-increasing mode. The analytical method is suitable not only for the stable off-line analysis of the static voltage, but also for the on-line application of an automatic voltage control system.

Description

technical field [0001] The invention relates to the field of power system simulation calculation, in particular to a method for static voltage stability analysis. Background technique [0002] The level of voltage stability at different points in the network can be determined using conventional power flow programs. However, this approach is laborious and does not provide sensitivity information that is very useful for decision making. Furthermore, due to the singularity of the Jacobian matrix, the conventional power flow has no solution outside the collapse point and does not reliably converge near the collapse point. [0003] For dispatchers, the most practical safety index for voltage stability should be the power margin index, which requires a more accurate determination of the critical point, two important parameters that indicate the strength of each load node's ability to maintain voltage stability: load point critical voltage and limit power. To do this, we need to...

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): H02J3/00G06F17/50
CPCY04S40/22Y02E60/76Y02E60/00
Inventor 马世英陈勇宋墩文王丽敏杜三恩陈得治
Owner CHINA ELECTRIC POWER RES INST