A New Method for Simplification and Reduction of State Estimation’s Computational Complexity in Stability Analysis of Power Systems

International Journal of Smart Electrical Engineering

مقاله 3، دوره 08، شماره 02، شهریور 2019، صفحه 51-58   

نوع مقاله: Research Paper

نویسندگان

Ebadollah Amouzad Mahdiraji^{* 1}؛ Seyed Mohammad Shariatmadar²

¹Department of Engineering, Sari Branch, Islamic Azad University, Sari, Iran

²Electrical Engineering Department, Naragh Branch, Islamic Azad University, Naragh, Iran

چکیده

The dynamic stability problem is one of the challenges that is constantly being discussed in power systems. Meanwhile, one of the most important factors which will have a direct impact on its determination is the system state estimation. To monitor the stability of the power system, one of the determinative factors is the accuracy and speed of the state estimation equations’ input data. Therefore, in this paper, the Factorized Load Flow Method was used as a method for estimating input data of the system stability analysis. In this study, factorized load flow method was presented in full details in terms of theoretical relations and simulation results, and in order to prove its performance efficiency a comparison was made between its results with the results of the Newton-Raphson method. The conducted comparisons and investigations showed that the proposed method can determine the needed inputs for state estimation with high speed and precision. The proposed method was simulated using coding environment of MATLAB software and it was shown that this idea enjoyed an appropriate quality for reducing the computational complexity and increasing the accuracy and speed of state estimation.

کلیدواژه‌ها

Dynamic stability of power system؛ Factorized Load flow؛ state estimation؛ Newton-Raphson Method