الفهرس 
Chapter 1 INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Recently, it became crucial to study and apply fault management systems with a suitable control strategy to automatically identify and isolate the faulted section, and then restore the rest of power grids under all possible fault conditions as fast as possible. This process is based on the main characteristics of the smart grid, which is the self-healing concept. In this thesis, different fault management approaches based on proposed protection functions are introduced to enhance the self-healing of the distribution networks concerning both shunt faults and series faults. First, a novel centralized fault management technique is proposed for based on tracing passive traveling waves of shunt faults. The identification process relies on analyzing the amplitudes and time stamps of the first arrival waves of the voltages through the distribution system that is divided into zones. The proposed approach encompasses three essential steps: determining the faulted zone, identifying the faulted path within the determined zone, and precisely pinpointing the faulted section. The second proposed approach is to manage the series fault with the potential to detect, classify, and locate open-conductor faults. Different fault cases are considered even with a falling conductor. The proposed method is based on monitoring the fundamental currents and the zero-sequence component. Finally, another approach for detecting and locating open-conductor faults is introduced based on analyzing the fault transients instead of the fundamental components. The measured waves’ polarities are compared together for fault detection. Then, a proposed fault management technique depends on these polarities and the two-terminal traveling wave technique is used for determining the faulted point and the faulted section. Extensive tests are conducted using the detailed simulation of the IEEE 33 bus system implemented in the PSCAD and MATLAB/SIMULINK programs. The results obtained from the simulations confirm the high reliability of the proposed fault management scheme, making it a viable solution for implementation in distribution systems.