Research on Dynamic Thevenin Equivalence Method Based on Deviation Correction

Wang Ying¹, Ma Gang^1, and Tang Yi²

¹Electrical & Automation Engineering, Nanjing Normal University, Nanjing, China

²Electrical Engineering, South East University, Nanjing, China

Cite this paper

Wang Ying, Ma Gang and Tang Yi. Research on Dynamic Thevenin Equivalence Method Based on Deviation Correction. American Journal of Electrical and Electronic Engineering. 2017; 5(6):195-201. doi: 10.12691/AJEEE-5-6-1

Abstract

As one of the core algorithms for safety and stability evaluation of the power grid, the method has been used by many scholars to analyze and control the stability of power grid. A method based on deviation correction is studied to track Thevenin equivalent parameters. This is an iterative algorithm based on the correction of the amount of deviation. The direction of the correction is determined based on the real-time data, and the parameters of the real-time estimation are obtained by iterative correction of the Thevenin equivalent parameter. It is possible to accurately track the Thevenin equivalent parameters when the system is disturbed to achieve an accurate analysis of the voltage stability.

Keywords

dynamic Thevenin equivalent, deviation correction, least squares method, complete differential

Copyright

This work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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