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本文主要介绍了在ATPDraw环境下如何建立2×27.5 kV复线AT牵引网的模型,该模型充分考虑了AT漏抗、线路互感、钢轨对地漏导等因素对牵引网阻抗的影响,并使用ATP-EMTP仿真出在以上因素影响下的牵引网故障短路电流波形,同时应用“AT中性点吸上电流比”及复线“上下行电流比”故障测距方法证明了该模型的实用性.
This paper mainly introduces how to build a 2 × 27.5 kV double-wire AT traction network under ATPDraw environment. This model fully considers the influence of AT leakage reactance, line mutual inductance, rail-to-ground leakage conductance and other factors on the traction network impedance and uses ATP- EMTP simulates the fault short-circuit current waveform of the traction network under the influence of the above factors. At the same time, it is proved that the model is practicable by using “AT neutral point up current ratio” and double line “up / down current ratio” fault ranging method Sex.