VILLA JAÉN , Antonio De La

Esta tesis abordael problema de la incorporacion de modelos de subestaciones en el proceso de Estimacion de Estado de Sistemas Electricos de Potencia. Una de las actuales lineas de desarrollo se encuentra en los denominados Estimadores de Estado Generalizados. Este tipo de estimadores integra, tanto la estimacion del estado del sistema...

Conventional state estimators (SEs) cannot take advantage of all available measurements, like currents flowing through circuit breakers and individual external injections. Current measurements are frequent at the lower voltage levels and their loss implies a reduction of the global redundancy and hence a deterioration of the SE filtering...

Conventional state estimators (SEs) cannot take advantage of all available measurements, like currents flowing through circuit breakers and individual external injections. Current measurements are frequent at the lower voltage levels and their loss implies a reduction of the global redundancy and hence a deterioration of the SE filtering...

State estimation of distribution systems typically relies on measurement sets with very low redundancy levels. In this paper, this fact is exploited by first solving a conventional load flow, using exclusively a critical set of measurements, and then compensating the solution to account for the few redundant measurements available. This leads...

Synchronized phasor measurement units (PMUs) are becoming a reality in more and more power systems, mainly at the transmission level. This paper presents, in a tutorial manner, the benefits that existing and future State Estimators (SE) can achieve by incorporating these devices in the monitoring process. After a review of the relevant PMU...

A new procedure focused on reliability analysis of subtransmission systems supported by the state enumeration technique is presented. This new methodology is conducted in three stages. First, a classical state enumeration reliability assessment is performed for the branch-node model of a subtransmission system, assuming that substations are...

En esta comunicación se describe una nueva metodología aplicable al cálculo en tiempo real de los índices de calidad de suministros en redes de transporte y de distribución. Con el método de análisis que se propone, las subestaciones son modeladas, inicialmente, como un simple nudo eléctrico y bajo ese supuesto se realiza la evaluación del...

It is well known that topology changes in a power system strongly influences the results of reliability assessment studies. Besides, it is obvious that the topology of an external system also affect the reliability of the internal system through changes on the power flows within the rest of the system, and hence, through changes on the tie...

This paper proposes a new methodology for shortterm (24 hours) reliability assessment of transmission and distribution networks, including detailed substations models. Substations are first considered as single electrical nodes to evaluate the reliability of delivery nodes. If nodes (substations) with a high LOLP (Loss of Load Probability) are...

This work deals with a new formulation for the direct current corrective optimal power flow. The formulation is based on the outage of generators and/or branches modelled as fictitious injections of active power. By including that fictitious injections in the optimization problem, the injections are adjusted to the post-contingency state as a...