Rezonance v napájecí soustavě 25 kV, 50 Hz

Abstract

This work deals with the problem of the formation of the rated resonance frequencies in the one phase alternating system 25 kV, 50 Hz. It describs the formation and the effect of the harmonic in the current demanded by a motor vehicle with diode tractive converter and in connection with this it shows the necessity of using a filtration balancing equipment in switching stations of ČD. It lays down the procedure of the calculation of rated resonance frequencies in the tractive feed array and experimantally checks their appearance on a haul of a foreign railway.

The theoretical part is interested in the formation of the rated resonance frequencies in one phase system, in the influence of each part of the feed array and in its configuration of the resonance frequency. Then it approaches the process of the calculation of rated resonance frequencies for different configurations of the tractive feed array, including the configuration of the array with a filtration compensatory equipment added. The theoretical part is closed with the conception, the construction and the describtion of the function of the filtration compensatory equipment in a chosen tractive feed array.

In the practical part, the calculation of the resonance frequency with the filtration compensatory equipment disconnected is shown for different lengths of the one-side-opened contact line. It also shows the calculation of the resonance frequency for different lengths of the contact line with the filtration compensatory equipment connected. In the last part there are diagrams showing the dependance of the rated resonance frequency of the tractive feed array on the length of the one-side-opened contact line.