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Abstract This thesis presents a simple technique for deducing minimal cut set (MCS) from the defined minimal path set (MPS) of generic distribution system and this technique have been used to evaluate the basic reliability indices of Egypt’s Second Research Reactor (ETRR-2) electrical distribution network. The alternative system configurations are then studied to evaluate their impact on service reliability. , The proposed MCS approach considers’ both sustained and temporary outage. The temporary outage constitutes an important parameter ill characterizing the system reliability indices for critical load point in distribution system. It is also consider the power quality impact on the reliability indices. This work is structured into six Chapters, a list of references, and two appendices. The first chapter provides an introduction of the thesis and contains a brief review of Power System Reliability Evaluation, a literature review of previous work concerning reliability evaluation techniques. Special’ attention is given to the minimal cut-set method, this chapter presents also; thesis objective, contribution and thesis outlines. Chapter 2; contains review of reliability evaluation techniques. Special attention is given to the minimal cut-set methodology. Chapter 3; different minimal cut set and minimal path set enumeration ~ methods were presented, highlighting the advantages and disadvantages of each method. ABSTRACT This thesis presents a simple technique for deducing minimal cut set (MCS) from the defined minimal path set (MPS) of generic distribution system and this technique have been used to evaluate the basic reliability indices of Egypt’s Second Research Reactor (ETRR-2) electrical distribution network. The alternative system configurations are then studied to evaluate their impact on service reliability. , The proposed MCS approach considers’ both sustained and temporary outage. The temporary outage constitutes an important parameter ill characterizing the system reliability indices for critical load point in distribution system. It is also consider the power quality impact on the reliability indices. This work is structured into six Chapters, a list of references, and two appendices. The first chapter provides an introduction of the thesis and contains a brief review of Power System Reliability Evaluation, a literature review of previous work concerning reliability evaluation techniques. Special’ attention is given to the minimal cut-set method, this chapter presents also; thesis objective, contribution and thesis outlines. Chapter 2; contains review of reliability evaluation techniques. Special attention is given to the minimal cut-set methodology. Chapter 3; different minimal cut set and minimal path set enumeration ~ methods were presented, highlighting the advantages and disadvantages of each method. IV Chapter 4; proposes a simple technique to enumerate the MCS based on the MPS. This method depends on constructing two matrices describing the node input and node output links (NILM, NOLM), These matrices simplify the representation of links by binary coding according to the link incident to the node. As well as the NILM and NOLM memorize the graph topology in the binary form. The back predecessors are obtained easily from the two matrixes. Accordingly the MPS and MCS are obtained. The minimal cut set approach is used in evaluating load point reliability; then system reliability indices have been deduced. Temporary outage cut-set and power quality impacts on reliability indices have been considered. Chapter 5; illustrates the application of the proposed method to obtain the reliability indices for the electrical’ distribution system in ETRR-2 reactor. Conclusion, Recommendations, and Suggestions for future work are the contents of chapter 6, followed by the list of references and the appendicesv |