新型牵引变直流偏磁励磁的混合仿真分析
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1.广西大学电气工程学院;2.广西柳州特种变压器有限责任公司

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广西科技厅重大研究项目(AB18126026)


Hybrid Simulation Analysis of Bias Excitation of New Traction Transformer
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Guangxi University

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    摘要:

    城市轨道交通牵引供电系统的稳定关乎城市电网的安全和交通稳定运行,由于大量投入使用的电缆和一系列电力电子装置,产生了严重破坏牵引供电系统安全性的谐波和无功问题。牵引变作为牵引供电系统的核心设备,其具备传输供电和滤除非线性负载谐波等重要作用,直流偏磁是一种广泛存在的会对牵引变产生不利影响的现象,严重时会直接威胁牵引变的安全稳定运行。基于PSCAD/EMTDC以及ANSYS分别建立了一种新型牵引变的UMEC及有限元模型,由励磁电流特性入手,通过多平台混合仿真的手段对这一新型牵引变遭受直流偏磁影响时的电磁、损耗等励磁特性进行了观测和分析,并与传统牵引变进行对比,评估了该新型牵引变遭遇直流偏磁时的励磁状态。

    Abstract:

    Stability of the urban rail transit traction power supply system is related to the safety of the urban power grid and the stable operation of the traffic. As the core equipment of the traction power supply system, the traction transformer has important functions such as transmitting power supply and filtering nonlinear load harmonics. DC bias is a widespread phenomenon that will adversely affect the traction transformer, it may directly threaten the safe and stable operation of the traction transformer. Based on PSCAD/EMTDC and ANSYS, establishes a UMEC and finite element model of a new type of traction transformer. By means of multi-platform hybrid simulation, the electromagnetic, loss and other excitation characteristics of this new traction transformer when it is affected by DC bias are observed and analyzed, compared with traditional traction transformer,the excitation situation of the new traction transformer encountered by DC bias is evaluated.

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  • 收稿日期:2021-11-08
  • 最后修改日期:2022-03-11
  • 录用日期:2022-01-18
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