Calculation of Short-circuit Current of Metro Vehicle Based on External Characteristics of Rectifier Unit

Lei SUN; Mingli WU; Jixing SUN; Zihui HAO; Lei PAN; Tiance LI

doi:10.13890/j.issn.1000-128x.2019.05.111

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Calculation of Short-circuit Current of Metro Vehicle Based on External Characteristics of Rectifier Unit

Urban Rail & Vehicle | 更新时间：2021-12-13

- Calculation of Short-circuit Current of Metro Vehicle Based on External Characteristics of Rectifier Unit
- Electric Drive for Locomotives Issue 5, Pages: 105-110,128(2019)
- 作者机构：
  
  1.北京交通大学　电气工程学院，北京　100044
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128x.2019.05.111
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Lei SUN, Mingli WU, Jixing SUN, et al. Calculation of Short-circuit Current of Metro Vehicle Based on External Characteristics of Rectifier Unit. [J]. Electric Drive for Locomotives (5):105-110,128(2019)
DOI：

Lei SUN, Mingli WU, Jixing SUN, et al. Calculation of Short-circuit Current of Metro Vehicle Based on External Characteristics of Rectifier Unit. [J]. Electric Drive for Locomotives (5):105-110,128(2019) DOI： 10.13890/j.issn.1000-128x.2019.05.111.

摘要

结合实际运行的地铁线路、车辆电气参数，重点研究了整流机组电气特性，提出基于整流机组外特性的地铁车辆短路电流的计算方法，建立“变电所-牵引网-地铁车辆”模型并进行了仿真分析，得出地铁车辆短路暂态过程计算结果与仿真对比，波形误差小于5%。对实际运行工况进行应用分析，结果表明，模型计算可校验“车-网”保护配置的可靠性。研究工作为选择直流快速断路器、确定系统保护配置以及评估系统供电能力提供理论依据及数据支持。

Abstract

Combined with the actual metro line and vehicle electric parameters, the electrical characteristics of rectifier unit was analyzed in detail and the calculation method of short-circuit current occurring on the metro vehicle was proposed based on the external characteristics of rectifier unit. The substation-traction network-metro vehicle model was established and simulated. The short circuit transient process of metro vehicle was obtained. The comparison between the two results showed that the waveform error was less than 5%. The application analysis of the actual operating conditions shows that the calculation can verify the reliability of the vehicle-network protection configuration. The research work provides theoretical basis and data support for selecting DC fast circuit breaker, determining system protection configuration and evaluating power supply capability.

关键词

地铁车辆整流机组外特性短路电流车-网-所模型仿真分析

Keywords

metro vehiclerectifier unitexternal characteristicsshort-circuit currentthe substation-traction network-metro vehicle simulation modelsimulation analysis

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