Abstract-This paper presents a conceptual approach for eliminating the multiple estimation problem of impedance-based fault location methods applied to power distribution systems, using the available measurements of current and voltage fundamentals at the power substation. Three test systems are used to identify the faulted lateral obtaining high performance, even in the case of similar feeder configurations. This approach shows that it is possible to obtain a unique fault location, eliminating the problem of multiple estimation in tree-shaped radial systems using the single-end measurements at the distribution substation. Finally, this approach also contributes to improve the power continuity indexes in distribution systems by the opportune zone fault location.

Abstract-This paper presents a conceptual approach for eliminating the multiple estimation problem of impedance-based fault location methods applied to power distribution systems, using the available measurements of current and voltage fundamentals at the power substation. Three test systems are used to identify the faulted lateral obtaining high performance, even in the case of similar feeder configurations. This approach shows that it is possible to obtain a unique fault location, eliminating the problem of multiple estimation in tree-shaped radial systems using the single-end measurements at the distribution substation. Finally, this approach also contributes to improve the power continuity indexes in distribution systems by the opportune zone fault location.

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Este artículo presenta una implementación del estándar internacional IEC 61850, diseñado para automatización, control y protección de subestaciones, usando servicios Cliente / Servidor, permitiendo consultar remotamente datos de variables. Con este propósito, se muestra el procedimiento realizado y se analiza la funcionalidad del protocolo de comunicaciones, desde el intercambio de datos y la información entre los dispositivos que componen la red propuesta. La realización de este trabajo se debe a la mayor penetración e influencia de la norma y cómo se debe implementar, entre otros aspectos.

The stability analysis considers the performance of generators and its ability to maintain synchronism under sudden changes in the power system. The response of these systems is non-linear, and its analysis must include deviations of rotor angles, rotor speeds, power flows in the system and voltages at machine's terminals. The use of computational tools is proposed in previous works, aiming for fast and effective solutions under high disturbances. Implicit integration and neural networks have been used to solve the system model, however simulation time does not comply with real time requirements. In this paper, explicit integration is used to solve the model's equations and the computing is accomplished using Graphic Processing Units (GPU) technology. The algorithm is implemented in MATLAB® and its main goal is to simulate the behavior of electrical power systems, looking to satisfy with real time requirements and to decrease simulation time using parallel processing technology.Index Terms−Explicit integration method, graphics processing unit, parallel processing, power systems stability.