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Dr. Ahmed Saeed Elzawawy :: Publications:

Title:
A NOVEL SCHEME OF UNDER FREQUENCY LOAD SHEDDING FOR A MICROGRID INTEGRATED WITH RENEWABLE ENERGY RESOURCES
Authors: ELZAWAWY Ahmed, ALI Mahmoud, BENDARY Fahmy, MANSOUR Wagdy
Year: 2020
Keywords: Not Available
Journal: Not Available
Volume: Not Available
Issue: Not Available
Pages: Not Available
Publisher: Not Available
Local/International: International
Paper Link: Not Available
Full paper Ahmed Saeed Elzawawy_CIRED 2019 - 421.pdf
Supplementary materials Not Available
Abstract:

The adaptive under frequency load shedding (UFLS) can be used to stabilize the system frequency by shedding an appropriate amount of load depending on the disturbance occurred. However, not only the total load to be shed is not minimized in this scheme, but also it may be inaccurate calculation of power deficit if the system is subjected to cascading failures during the shedding process. In this paper, a novel UFLS scheme is presented to minimize the amount of load shedding and keep the minimum frequency within the acceptable limit during severe disturbances and cascading failures. The shed load is minimized using genetic algorithm (GA) according to an objective function based on the system frequency. Multi scenarios of contingences are performed on the proposed system to collect the training patterns for an artificial neural network (ANN). The ANN can online determine the minimum amount of load shedding and keep the frequency within a safe margin. Although using the proposed scheme may cause the minimum frequency of the system to be below the minimum frequency of the adaptive scheme but the proposed method can perform minimal load shedding in various disturbance scenarios. Results are provided in the form of time domain simulations via MATLAB/SIMULINK.

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