ESTIMAÇÃO DE ESTADO EM SISTEMAS ELÉTRICOS DE POTÊNCIA – UM ESTUDO DE CASO USANDO A LINGUAGEM AMPL
ESTIMAÇÃO DE ESTADO EM SISTEMAS ELÉTRICOS DE POTÊNCIA – UM ESTUDO DE CASO USANDO A LINGUAGEM AMPL
-
DOI: https://doi.org/10.22533/at.ed.6541125260211
-
Palavras-chave: Estimação de Estado, Sistemas Elétricos de Potência, Otimização Matemática, AMPL, Solver Knitro.
-
Keywords: State Estimation, Eletrical Power Systems, Mathematical Optimization, AMPL Language, Knitro Solver.
-
Abstract: Conventionally, the State Estimation problem in Electric Power Systems is solved iteratively using the Weighted Least Squares (WLS) method. Although WLS is a well-established and widely used approach, its practical applicability may be limited by the complexity of its computational implementation, which often requires advanced programming skills. To overcome this challenge, alternatives such as commercial software packages or publicly available code are commonly considered. However, these options present notable limitations: commercial software is typically not free, and publicly available code does not always provide the reliability required for academic research. In this context, having a trustworthy, accessible, and easy-to-implement tool for solving the State Estimation problem becomes particularly valuable. In this work, we propose formulating the WLS State Estimator as a nonlinear optimization model implemented in the AMPL mathematical modeling language. AMPL offers a student license that grants free access to several commercial solvers, facilitating academic research. The proposed mathematical model was tested on a benchmark system and solved using the Knitro solver. The results demonstrate that the State Estimation problem can be successfully addressed through the AMPL modeling framework.
- Hugo Andrés Ruiz Flórez
- Gloria Patrícia López Sepúlveda