Pauranee Satphaisarnkit creator Weerakorn Ongsakul Chairperson Singh, Jai Govind Examination Committee Marpaung, Charles O.P. Examination Committee PEA Scholarship Donor Asian Institute of Technology Education Cooperation Project Scholarship Donor RTG Fellowship Scholarship Donor text series technical report th Pathum Thani, Thailand Asian Institute of Technology 2010 continuing eng 62 leaves : ill. + 1 online resource Traditional Provincial Electricity Authority (PEA) distribution system is radial in nature and supplied through substations. The presence of distributed generation (DG) provides considerable benefits from both engineering and economic viewpoints. However, the existing network was not designed for its integration. Protection selectivity is altered in the magnitude, duration and direction of fault current which may lead to problems related to incorrect operation. This thesis presents the impacts of DG on the protection system in PEA distribution system using DIgSILENT PowerFactory as a tool. The study divided into five case studies, considering sizes and connection position of a synchronous DG. The expected result can be a beneficial technical guideline to improve PEA protection system. A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Energy Thesis (M.Eng.) - Asian Institute of Technology, 2010 Distributed generation of electric power Thailand Asian Institute of Technology. http://203.159.5.9/ait-thesis/detail.php?q=B02233 http://203.159.5.9/ait-thesis/detail.php?q=B02233 110729 20260818134438.0