Modelo DC de las ecuaciones de potencia aplicado a la estimación de estado en sistemas eléctricos

Abstract

The continuous growth of power systems has caused the operation of electrical systems to increase in complexity day by day. From this aspect arises the need to maintain the operation of the electrical system in optimal conditions. One of the critical, and most important, procedures that responds to the need to know the state of the system during its operation, links the use of state estimation methods, the application of which, mainly, given the high complexity in today's power systems, can commonly lead to high computational times. In this context, this work analyzes the statistical method of estimating DC states, using the weighted least squares methodology, which includes the timely processing of a set of redundant measurements, correcting them by discarding erroneous Chi-square measurements, which has been developed in Matlab and validated by PowerFactory with linearized Power Flows. In order to test the proposed algorithm, the IEEE 6 and 14 bus test systems have been used subject to different estimator confidence parameters in this way, safety aspects in the electrical grid can be determined.