الفهرس 
GENERAL INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Development of reliability assessment techniques and program is very important in power system planning and testing .of existing power network configurations for detecting its weak paints. The development and utilization of a reliability program arc greatly influenced by experience .of a utility and the intent .of the system manager, planner and designer conducting the reliability studies. The reliability studies .of bulk power system indicate the ability of the composite generation and transmission system to satisfy the load demand at the major load points. Considerable effort has been applied aver the two last decades to develop techniques and criteria far. adequacy evaluation of composite power systems. A major burden in the developed methods used in evaluation of large composite system reliability is computation time required to solve a large number of credible contingencies outage states. This thesis introduces an effective approach to be used in bulk power system reliability assessment. It also presents an expert system based an this approach to calculate load paint reliability and try find solutions far improving certain bus reliability. A user friendly program consisting of four expert modules is developed based an this new approach and has the capability to calculate the load paint reliability in any power network .The development of the proposed approach begins by calculating load paints reliabilities .of bulk power system taking ”continuity .of supply” as the success criterion . This approach is based an breaking the interconnected power system into smaller size trees by removing certain lines, then salving each tarn network separately. The torn networks are then reconnected and the system buses reliabilities are evaluated in steps until reaching their final values. The proposed technique has a main advantage in that the bus reliability assessment is independent an the chosen trees which makes its application to reliability evaluation of large-scale power system more feasible. The validation and efficiency of the proposed algorithm are realized through application to the IEEE.3D bus power system model. The proposed approach is expanded to calculate the. reliability of composite generation and transmission system taking the following constraints into consideration Amount of available system generation and its reliability Maximum transmission lines capacity.Maximum connected load at each bus. The validation and efficiency .of the expanded technique are realized through application to the IEEE-Ray 13illintan Test System (RBTS) power system model.