Modelling and analysis of combined co-phase traction power supply system based on vx connection traction transformer

被引：0

作者：

Chen M. ^{[1
]}

Luo J. ^{[1
]}

Xie S. ^{[1
]}

Xia Y. ^{[2
]}

Jiang W. ^{[1
]}

机构：

[1] School of Electrical Engineering, Southwest Jiaotong University, Chengdu

[2] School of Electrical and Electronic Information Engineering, Xihua University, Chengdu

来源：

Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University | 2016年 / 51卷 / 05期

关键词：

Combined co-phase power supply; Compensation strategy; Operating characteristics; Simulation; Vx connection transformer;

D O I：

10.3969/j.issn.0258-2724.2016.05.010

中图分类号：

学科分类号：

摘要：

As the key technology of new generation traction power supply system,the design of co-phase traction power supply system should match different connection traction transformers to optimize the comprehensive compensation strategy of power quality and reduce the capacity and cost of power flow controller (PFC). A new scheme of combined co-phase traction power supply system was developed for high-speed and heavy-haul railways, which adopts auto-transformer (AT)traction mode and Vx connection transformer. First, based on the relationship of the connection angles of different ports, the model for the electrical parameter transformation between three-phase power grid and single-phase traction load was built. Second, according to the principle of comprehensive compensation of three-phase unbalanced voltage and reactive power, the operation current calculation formula for each port was deduced with the limited power quality as a constraint. Further, the dynamic compensation control scheme of PFC was presented. Compared with the current compensation schemes, it can ensure the compensation targets with the decrease of 10%-58% in the compensation capacity. Finally, the compensation model and control strategy are verified by the simulation on the operating characteristics of the proposed system under different loads verified. © 2016, Editorial Department of Journal of Southwest Jiaotong University. All right reserved.

引用

页码：886 / 893

页数：7

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