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首页> 外文会议>Proceedings of the 3rd international conference on electrical and information technologies for rail transportation: transportation >Transient Overvoltage Analysis of Traction Power Supply System with Neutral Sections in China High-Speed Railway Using a State-Space Model
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Transient Overvoltage Analysis of Traction Power Supply System with Neutral Sections in China High-Speed Railway Using a State-Space Model

机译：基于状态空间模型的中国高速铁路牵引供电系统中性点暂态过电压分析

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摘要

This study proposes a complete state-space model of 2 × 25 kV traction power supply system with neutral sections in China high-speed railway where the catenary system is divided into several sections insulated with each other and is connected by neutral sections. First, the system is modularized by a neutral section module, a source module, autotransformer (AT) modules, series modules, and parallel modules which are represented with differential equations. Then the state-space model is built by means of slicing catenary system and combining with those modules. By calculating this proposed model, the transient processes of the electric train auto-passing trough the neutral section are analyzed. Transient over-voltages occurred due to high-frequency oscillations as the circuit topology changing in each process.
机译：本研究提出了一个完整的中国高铁2×25 kV中性路段牵引供电系统的状态空间模型，该系统中的悬链线被分成几个相互绝缘的路段，并由中性路段连接。首先，系统由中性部分模块，源模块，自耦变压器（AT）模块，串联模块和并联模块组成，这些模块用微分方程表示。然后通过划分悬链线系统并与这些模块相结合，建立状态空间模型。通过计算该提出的模型，分析了电车自动通过中性区的瞬态过程。瞬态过电压是由于高频振荡而产生的，因为每个过程中的电路拓扑都会发生变化。

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