The operation of a distribution system in the presence of distributed generation systems has someadvantages and challenges. Optimal sizing and siting of DG systems has economic, technical, andenvironmental benefits in distribution systems. Improper selection of DG systems can reduce theseadvantages or even result in deterioration in the normal operation of the distribution system. DGallocation ...

The first part of this paper presents the basic analyses carried out on Nigerian 330 kV electrical network with distributed generation (DG) penetration. The analyses include load flow, short circuit, transient stability, modal/eigenvalues calculation and harmonics. The proposed network is an expanded network of the present network incorporating wind, solar and small-hydro sources. The choice of...

The use of energy storage on distribution networks continues to attract interest as a means to increase the penetration of distributed generation from renewable resources and provide wider network performance improvements. In mid 2009 a 600 kW, 200 kWh Lithium-Ion battery with a STATCOM power electronic interface will be field tested on an 11kV radial distribution network in the UK. Load flow m...

Original scientific paper The paper analyzes the possibility of reducing active power losses in power system, constrained by regulated voltage levels, by implementing appropriate distributed generation capacity. The objectives of this paper were achieved by developing hybrid methods based on artificial neural network and genetic algorithm. Methods have been developed to determine the impact of ...

a detailed model of wind power station, including double fed induction generator, dfig is presented in this paper. two control mechanisms are included in the model. the inner control system uses stator flux oriented control for the rotor side converter and grid voltage vector control for the grid side converter. the outer control system is used for wind turbine pitch angle. pscad/emtdc is used ...

This paper proposes an Optimal Power Flow for defining the minimum load to be shed maintain steady-state frequency between allowable limits in islanded microgrids. The droop coefficients and setpoints (no-load voltage of each Distributed Generator) are optimized considering microgrid frequency, nodal voltages, power generation (apparent reactive powers). approach is applied a 33 nodes, 24 hours...