Jednopólové poruchy v síti vn a nn.

Abstract

In the first part of the bachelor thesis, the author examines the parameters of outdoor line, cable line of HV a LV networks. Parameters of the line are electrical variables affecting properties of the line, which are determined by material, diameter of conductors, line construction and the environment around the conductors. The second part is devoted to fault conditions occurring in electrical networks. The main point of the thesis is devoted to possibilities to compensate the earth capacitive currents at a single phase failure and it is subsequent localization by static, dynamic methods and by failure indicators and others. In the last part, parameters of an imaginary line are calculated and to this is designed arc suppression coil for compensation of capacitive current.