الفهرس 
Types of distributed generation
DG Sizing and Siting MethodologyOnly 14 pages are availabe for public view
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Abstract
In the last decades, the growing demand on electricity lead researchers to develop new methods for generating enough power to meet it partly by generating electricity distribution system and to improve power quality in client’s side. Distributed generation (DG) is one of those methods. DG is widely used in modern networks and lead to changes in performance of distribution systems. The advantages that can be added to distribution system through using the DG’s are mainly improvement of voltage profile and power quality. Thus, DG is preferable to be installed in distribution system near clients to enhance the system performance while reducing power losses and improve voltage in this grid. Recently, DG became highly important and its penetration increased in most of the distribution systems. This thesis studies the effects of distributed generation outage from the system on its performance and behavior. The model of DG’s in this study assume two cases to the power that provided into network, where in the first case considered DG units inject just active power to the grid (unity power factor). In the second case the used DG injects both active and reactive power to the system. where many types of DG as (inverted based connected with photovoltaic, full cell or micro wind& combined heat and power) can be used. The sizing is done by using harmony search algorithm (HSA) while the locations are selected by ranking of the network buses. This work was done on IEEE 33 bus system with 100% dynamic loads. The dynamic loads are selected after comparison between many types of loads (static loads, both static and dynamic loads) where it is considered to be the worst type of load. After that, outage of DG units is fixed by injecting reactive power source (capacitor with controlled switch) to compensate the outage of DGs from the distribution system and to reduce the effect appeared on the network due to this outage. The sizing of capacitors is optimized by using harmony search algorithm (HSA) in same place of the DG units.