Increase of renewable energy sources in distribution networks brings forward their impact on voltage levels and symmetry. They are being implemented in network, which was not designed for decentralized energy production, instead it was used for classic network scheme where energy is delivered through transmission network from supply to demand in distribution networks.
For this study actual model of european urban low voltage network topology was used. Measured data for production and consumption was scaled to reach given information about maximal and minimal consumption of the network.
First part presents methods which were used to solve the problem and programs that were used. In simulations installed power of energy sources was increased, and with calculation of power flows voltage levels were acquired. With statistical approach of Monte Carlo method the probability curve of voltage violations in network was defined. This method was chosen because it allows multiple simulations which were necessary to research the impact of energy i placed in different locations in network.
MATLAB and OpenDSS, which were used to perform analysis are also described. Definitions of network elements are given and interaction between them. Load profiles and production data is also shown.
Second part, analysis, consists of simulation results with visual presentation of parameters and comparison of impact on results for different simulation parameters.
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