Ocena specyfiki obciążenia zespołów prostownikowych podstacji trakcyjnych dla II linii metra warszawskiego

W artykule przedstawiono analizę zmian obciążenia podstacji trakcyjnych na nowo wybudowanej linii metra w Warszawie. Obliczenia zostały oparte na danych dotyczących profilu trasy w budowie, lokalizacji przystanków i podstacji trakcyjnych, właściwości trakcyjnych pojazdów oraz parametrów ruchu oraz sposobu zasilania (zasilenie dwustronne, praca równoległa).

The paper presents the analysis of load changes of traction substations for the newly constructed metro line in Warsaw. The calculations are based on data concerning: profile of routes in construction, location of stops and traction substations and traction characteristics provided for the use of vehicles. On the basis of the assumed traffic density per time unit, maximum speed, idle time at the stations, etc., the waveforms of currents consumed by these vehicles were specified (by simulation), in partition to individual substations. Depending on the configuration of adopted electrical connections between substations, the calculations were performed for two cases: parallel (simultaneous) operation of all substations, and double-sided supply of each section. The period of the greatest planned density of traffic was subjected to analysis. On the basis of results obtained, there were calculated characteristic sizes (values) of the currents and the corresponding coefficients, which became the basis for further analysis and evaluation of applied load, in accordance to the problem of selection of overload classes for power rectifier units allocated to supply the said line. The obtained results were also analyzed by statistical methods and referenced to physically measured values for the case of the railway substation.