Energy efficiency analysis of two-sided feed scheme of DC traction network with high asymmetry of feeders parameters

Innovations and Prospects of Development of Mining Machinery and Electrical Engineering

矿业工程;电工学

Abramov, E.Y.^1 ; Sopov, V.I.^1

Novosibirsk State Technical University, 20, Karla Marksa Av., Novosibirsk

630073, Russia^1

关键词: Analytical method;    Calculation results;    Comparative assessment;    Energy efficiency analysis;    Modes of operation;    Parallel feeders;    Potential effects;    Traction substation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/87/3/032001/pdf
DOI  :  10.1088/1755-1315/87/3/032001

来源: IOP

【 摘 要 】

In a given research using the example of traction network area with high asymmetry of power supply parameters, the sequence of comparative assessment of power losses in DC traction network with parallel and traditional separated operating modes of traction substation feeders was shown. Experimental measurements were carried out under these modes of operation. The calculation data results based on statistic processing showed the power losses decrease in contact network and the increase in feeders. The changes proved to be critical ones and this demonstrates the significance of potential effects when converting traction network areas into parallel feeder operation. An analytical method of calculation the average power losses for different feed schemes of the traction network was developed. On its basis, the dependences of the relative losses were obtained by varying the difference in feeder voltages. The calculation results showed unreasonableness transition to a two-sided feed scheme for the considered traction network area. A larger reduction in the total power loss can be obtained with a smaller difference of the feeders' resistance and / or a more symmetrical sectioning scheme of contact network.