Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Engineering
A Fuzzy Logic Classifier For Transient Stability Assessment, Almoataz Youssef Abdelaziz
A Fuzzy Logic Classifier For Transient Stability Assessment, Almoataz Youssef Abdelaziz
Almoataz Youssef Abdelaziz
Transient stability assessment (TSA) of a power system pursues a two-fold objective: first to appraise the system’s capability to withstand major contingencies and second to suggest remedial actions whenever needed. The first objective is the concern of analysis; the second is a matter of control. To assess transient stability, multitude of techniques are available encompassing traditional time domain state numerical integration, Lyapunov based techniques, probabilistic methods, and recently Artificial Intelligence (AI) techniques. This paper presents a simple but effective fuzzy logic classifier system for TSA. The fuzzy logic-based rule assessment needs only a fraction of time to solve the classification …
An Adaptive Protection Scheme For Optimal Overcurrent Relay Coordination In Interconnected Power Systems, Almoataz Youssef Abdelaziz
An Adaptive Protection Scheme For Optimal Overcurrent Relay Coordination In Interconnected Power Systems, Almoataz Youssef Abdelaziz
Almoataz Youssef Abdelaziz
This paper presents an adaptive protection scheme for optimal coordination of overcurrent relays (OCR) in interconnected power networks with an improved formulation. The scheme adapts to system changes; new relays settings are implemented as load, generation-level or system-topology changes. The software developed for this application is described. The developed scheme is applied to the IEEE 30-bus test system. Results showed the importance and necessity of this scheme in maintaining the optimal performance of the relays in all conditions.