Etude de l’intégration de la production décentralisée dans les réseaux de distribution

Abstract

The main components of the energy systems are generation, transmission and distribution, the latter among these three parts represents the most crucial infrastructure in terms of impact on reliability, quality and cost of electrical energy. Distribution systems, which traditionally have a radial or weakly meshed topology with a high ratio (R/X) in the lines and a unidirectional power flow, are not designed for the connection of decentralized production devices, but in recent decades these systems have profound changes have contributed to the transmission of these networks from a large centralized generation to the integration of additional decentralized sources, called Distributed Generation with relatively limited production capacities connected to distribution systems near the points of consumption. Therefore, in emerging electricity distribution networks, the important role of these sources can be clearly predicted. The Optimal Integration of Distributed Generation (OIDG) at the distribution level that is attracting increasing interest has many advantages, and currently plays a central role in the planning, operation and optimization of modern distribution systems. The specific problem to be considered in this thesis is that of the selection of the location, the volume and the technology of the units of DG, in order to minimize or maximize a predefined objective function (reduction of losses, improvement of the voltage profile, maximization of voltage stability, ... etc.), without violation of technical and operational constraints. In this context, the main contribution of this thesis is to improve the performance of power distribution systems through the study and development of a modeling and simulation framework ensures optimal integration of the units of the GD into power grids. radial distribution (RDR). In this thesis, an efficient approach based on a metaheuristic algorithm is adopted for an optimal integration of the distributed generation in the radial distribution systems (RDS) allowing to reduce the losses of active power; maximizing the voltage stability and improving the voltage profile. The approach adopted in this thesis applies to standard distribution test systems, 33 , 69 and 85 bus, various case studies are examined, some interesting results are also analyzed and discussed in this study.