Análise da sensibilidade de estimador de estados a erros de medição e estratégias de mitigação

Abstract

This work aims to evaluate the sensitivity of the state estimator to measurement errors in power electrical systems. The analysis investigates the impact of measurement inaccuracies on the estimated states and explores strategies to mitigate these effects. Tests were conducted on a three-bus system with eight measurements, varying the measurement error around the zero error condition, from ±0.4 pu. To mitigate this error, tests were simulated in which the measurement error composite variable had its weight reduced. Based on this process, the responses of the estimated states and residuals obtained from the simulations were statistically analyzed, using the mean absolute percentage errors and the standard deviation of the variables. The goal is to enhance the understanding of how measurement errors affect the performance of state estimators.