WYBRANE ZAGADNIENIA MODELOWANIA PRZEPIĘĆ ATMOSFERYCZNYCH JAKO ŹRÓDEŁ ZAKŁÓCEŃ W SIECIACH TRAKCYJNYCH

Abstract

In the report example-voltages courses that were received as result of researches passed with the combination wave generator of shapes for the voltage surge 1.2/50 µs and current surge 8/20 µs with results of the trolley wireses modelling, were compared. For this target, the model of the combination wave generator and examined section of the trolley wires containing: the trolley and rail wires taking into account electric parameters of the track and models of such elements as column, insulator, lightning conductor, was used. The mentioned elements of the analysed system were grouped in the form of four-terminal networks of the type Π, creating three models of fourterminal networks containing a trolley wires section, a track of 72 m length and the model of the column with an insulator, horn lightning conductor and the column, for which a surge from the model of the combination wave generator was led. From the chosen elements models a system for the analysis of the surge threat of trolley wireses, was built. Dividing the system into sections of 72m length makes it possible for more exact simulation and the observation of analysis results inat will chosen points. To verify the measurement results, a simulatory research using LTspice programme was made. In the report, the necessity of treating the problem of the lighting rod of railway devices protection efficiency was proved. The represented possibilities of the use of chosen programme have a cognitive character. They will be put-upon to a further analysis and estimations of the atmospherical origin surges threat for the railway traffic control equipment feeding parley.