Study on self-adaptive real-time dynamic modeling approach of metro traction power supply system

TAO Yan

doi:10.13890/j.issn.1000-128X.2022.04.104

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Study on self-adaptive real-time dynamic modeling approach of metro traction power supply system

Railway Electrification | 更新时间：2024-08-02

- Study on self-adaptive real-time dynamic modeling approach of metro traction power supply system
- Electric drive for locomotives Issue 6, Pages: 122-129(2022)
- 作者机构：
  
  湖南铁道职业技术学院，湖南株洲　　412001
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128X.2022.04.104
  CLC： U231;U223.5
- Published：10 November 2022，
  
  Received：28 November 2021，
  
  Revised：20 May 2022，
- 稿件说明：
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TAO Yan. Study on self-adaptive real-time dynamic modeling approach of metro traction power supply system. [J]. Electric drive for locomotives (6):122-129(2022)
DOI：

TAO Yan. Study on self-adaptive real-time dynamic modeling approach of metro traction power supply system. [J]. Electric drive for locomotives (6):122-129(2022) DOI： 10.13890/j.issn.1000-128X.2022.04.104.

摘要

城市轨道交通各线路牵引变电所数量和位置的不固定性，列车连续运行所导致的直流牵引供电系统网络结构的时变性，全线直流牵引网的贯通性是直流牵引供电系统数学建模需重点解决的关键技术难题。为了建立时变电网络的动态模型，基于节点导纳网络方程原理，提出了一种城市轨道交通直流牵引供电系统自适应实时动态数学建模方法，即在每个列车运行时刻，首先按照设定的规则对全线所有牵引变电所两端节点、列车两端节点进行自动排序，然后按照位置坐标对节点进行排序并存储至节点数组，最后根据节点数组和输入参数文件自适应地实时动态生成直流牵引供电系统节点导纳网络方程，并完成求解。通过仿真与试验研究，验证了本文提出方法的科学性和正确性。

Abstract

The varying number and location of traction substations along urban rail transit system lines

the time-varying characteristics of the DC traction power supply system network structure caused by continuous operation of trains

the DC traction network connectivity along the whole lines

are the critical technical bottlenecks in the mathematical modeling for the DC traction power supply system. Based on node-admittance network equation theory

a self-adaptive real-time dynamic mathematical modeling approach of the DC traction power supply system for the urban rail transit system was put forward. Firstly

the nodes which include both ends of all traction substations along the whole line and trains were sequenced automatically at any train operation moment

according to the given rules

such nodes were then sequenced according to position coordinates and stored in the node array

and the node-admittance network equation of the DC traction power supply system was generated according to the node array and input parameter files in a self-adaptive

real-time and dynamic pattern

and then solved. The scientificity and correctness of the proposed approach was verified through simulation and experimental study.

关键词

城市轨道交通牵引供电数学建模时变电网络节点导纳网络方程自适应

Keywords

urban rail transittraction power supplymathematical modelingtime-varying networknode-admittance network equationself-adaptive

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