An algorithm of calculating the input and mutual resistances of the external electric power supply system

• Main Authors: Grigoriev, N. P., Tikhomirov, V. A., Trofimovich, P. N., Kovalev, V. A., Kopay, I. G.
• Format: Conference Proceeding
• Language: English
• Subjects: Algorithms; Economic forecasting; Electric power supplies; Electrical loads; Flow charts; Intervals; Mathematical analysis; Passenger rolling stock; Power supply; Rolling stock; Separation; Topology; Traction; Transportation
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0104213

The article deals with topical issues related to improving the quality of electrical energy and reducing the energy intensity of the transportation process. The 25 kV AC system provides transportation of goods and passengers by electric rolling stock. Single-phase loads of electric rolling stock reduce the quality of electrical energy in the external power supply system. The choice of rational steps, for example, transverse capacitive compensation devices and other devices at time intervals during reciprocal train separation, reduces the negative impact of single-phase traction loads. The energy intensity of the transportation process is associated with the choice of power supply diagrams for traction loads at predicted time intervals during reciprocal train separation. The value of the input and mutual resistances of the external power supply system depends on the topology of the valid schemes and resistances of the branches, the predictive state of which is most commonly known to operational workers for the daily period. Technological disturbances in the external power supply system result in the work according to forced schemes, whose predicted time of application can be determined with high accuracy. It is proposed to perform taking into consideration actual input and mutual resistances for the forecast time of application of valid external power supply system schemes in order to improve the accuracy of normalization of the performance of external and traction power supply systems. The algorithm of calculating the input and mutual resistances of the nodes of the external power supply system is represented by a flow chart.