Výpočet zkratů v distribučních sítích

Abstract

This bachelor's thesis deals with the short-circuit current from its origin to its course, effects to its consequences and the following calculation on an imaginary practical example. In the theoretical part, this work deals with the formation of a short circuit, possible types of short circuits, up to their courses and the consequences of short circuit currents on various devices or possible consequences. In the following parts of this work, the procedures for calculating short-circuit currents according to the STN EN 60909 standard are summarized, and subsequent calculations of the impedance of the system elements and the calculation of the impulse short-circuit current for various short-circuits are also summarized there. In the Practical part and the last part, there is a subsequent example of the intended scheme for short-circuit ratios, where the parameters of the given elements are calculated and the subsequent calculation of the short-circuit ratios using physical values and the subsequent summary of all short-circuit locations in the resulting table.