分析了微机电动机保护装置在此次事故中的动作情况，并使用e mtp仿真工具仿真电动机在自起动过程中的电流波形。

The operation condition of motor microcomputer-based protection was analyzed in this fault, and the current waveform in the course of starting was simulated using EMTP simulation tool.

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短路故障模型的仿真结果表明机车起动电流和远端短路电流的相似会对直流馈线保护造成影响。

Short-circuit fault model simulation results show that the locomotive starting current is similar to the remote short-circuit current will affect the DC line protection.

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据此仿真模型，进行了并励直流电动机的直接起动、降压起动、电枢回路串电阻起动的实例仿真实验，给出了有关仿真结果。

Then the model is applied to simulate the direct start-up process, the reduced voltage starting process and the starting process with series resistance in the armature circuit.

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