Abstract

In this paper, we consider means to develop and improve a dc traction power supply systems and its adaptation for high-speed mine lines. One way to improve and increase the efficiency of the traction power supply system is to increase the rated voltage in the dc traction grid up to 24 kV. This allows increasing the throughput and carrying capacity of railways, increasing the distance between substations, and reducing the cross section of the traction grid wires and electricity losses in power supply devices. All this, as well as the absence of supply voltage unbalance under dc, inductive losses, and a significantly lower electromagnetic effect on the infrastructure, is more efficient than all ac traction power supply systems. We determined the directions of numerical modeling and proposed nonlinear numerical models that allow analyzing the interaction of sources of electromagnetic fields of traditional and superconducting electrical equipment under the conditions of an unlimited region of magnetic field propagation and the absence of symmetry of the field distribution in space. To determine the effect of electromagnetic fields on the integral parameters of traditional and superconducting electrical equipment, an algorithm and a package of applied programs were developed. We performed studies and substantiated the parameters and dimensions of superconducting inductive reactors of smoothing traction substation filters at which the volume of occupied space is minimized and the best use of superconducting material is ensured at a specified energy intensity.

中文翻译：

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提高直流牵引电源系统的能源效率

摘要

在本文中，我们考虑了开发和改进直流牵引电源系统及其对高速矿山线路的适应性的方法。改善和提高牵引电源系统效率的一种方法是将直流牵引电网中的额定电压提高到24 kV。这可以提高铁路的吞吐量和承载能力，增加变电站之间的距离，并减少牵引电网的横截面和供电设备中的电力损耗。所有这些以及缺少直流下的电源电压不平衡，电感性损耗以及对基础设施的电磁影响均明显低于所有交流电源系统。我们确定了数值建模的方向，并提出了非线性数值模型，该模型可以分析传统和超导电气设备的电磁场源在磁场传播无限区域且空间分布不对称的情况下的相互作用。 。为了确定电磁场对传统和超导电气设备的整体参数的影响，开发了一种算法和一整套应用程序。我们进行了研究并证实了变电站牵引式变流器滤波器的超导感应电抗器的参数和尺寸，在这种电抗器中，所占空间最小，并且在指定的能量强度下确保最佳使用超导材料。