Obnovitelné zdroje v distribučních rozvodech.

Abstract

The bachelor's thesis deals with the issue of renewable electricity sources and their integration into distribution networks. The thesis contains a theoretical analysis of the low and high voltage distribution system, introduction of the most commonly used renewable sources in the Czech Republic, their location, principle of operation, advantages and disadvantages. The next part of the work deals with the feedback effects that individual renewable sources can create, such as changes in voltage, flicker, influencing the HDO signal or contributing to short-circuit conditions and contributions to the level of harmonic currents. At the end, the work deals with the limits of connectivity of renewable electricity sources regarding the compensation of reactive power, their conditions for connection and allowing the extent of annoying feedback in the network. The practical part deals with the calculation of a prototype of a 22 kV distribution network in which a wind power plant is connected. It is examined whether the plant can meet the conditions in terms of maximum allowable voltage drop and voltage change after connection to the network. The aim of the bachelor's thesis is to approach the issue of renewable resources, which in recent years have enjoyed great popularity among the public not only in the Czech Republic, but around the world.