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基于RPC的光储接入牵引供电系统协调控制方法

陈维荣 王小雨 韩莹 臧治 李奇 沈文杰 许程鹏

陈维荣, 王小雨, 韩莹, 臧治, 李奇, 沈文杰, 许程鹏. 基于RPC的光储接入牵引供电系统协调控制方法[J]. 西南交通大学学报, 2024, 59(1): 1-10. doi: 10.3969/j.issn.0258-2724.20211058
引用本文: 陈维荣, 王小雨, 韩莹, 臧治, 李奇, 沈文杰, 许程鹏. 基于RPC的光储接入牵引供电系统协调控制方法[J]. 西南交通大学学报, 2024, 59(1): 1-10. doi: 10.3969/j.issn.0258-2724.20211058
CHEN Weirong, WANG Xiaoyu, HAN Ying, ZANG Zhi, LI Qi, SHEN Wenjie, XU Chengpeng. Coordinated Control Method of Photovoltaic and Battery System Connected to Traction Power Supply System Based on Railway Power Conditioner[J]. Journal of Southwest Jiaotong University, 2024, 59(1): 1-10. doi: 10.3969/j.issn.0258-2724.20211058
Citation: CHEN Weirong, WANG Xiaoyu, HAN Ying, ZANG Zhi, LI Qi, SHEN Wenjie, XU Chengpeng. Coordinated Control Method of Photovoltaic and Battery System Connected to Traction Power Supply System Based on Railway Power Conditioner[J]. Journal of Southwest Jiaotong University, 2024, 59(1): 1-10. doi: 10.3969/j.issn.0258-2724.20211058

基于RPC的光储接入牵引供电系统协调控制方法

doi: 10.3969/j.issn.0258-2724.20211058
基金项目: 国家自然科学基金(52077180,52007157)
详细信息
    作者简介:

    陈维荣(1965—),男,教授,研究方向为电力系统及其自动化,E-mail:wrchen@swjtu.edu.cn

    通讯作者:

    韩莹(1990—),男,副教授,研究方向为微电网/综合能源系统运行与控制,E-mail:hanying@swjtu.edu.cn

  • 中图分类号: U223.6

Coordinated Control Method of Photovoltaic and Battery System Connected to Traction Power Supply System Based on Railway Power Conditioner

  • 摘要:

    为将光伏发电接入牵引供电系统进行有效利用,同时兼顾牵引供电系统电能质量改善及列车再生制动能量回收利用,提出了一种基于铁路功率调节器的光储系统接入牵引供电系统的协调控制方法. 首先,搭建基于铁路功率调节器的光储系统接入牵引供电拓扑结构,并对其电能质量补偿机理进行理论分析;在此基础上,充分考虑光储系统的运行条件以及列车牵引、制动、空载或惰行工况,提出光储系统接入牵引供电的联合协调控制方法,实现了“光 + 储 + 荷”三者间的协调控制、牵引供电系统负序的动态补偿以及谐波的有效抑制;在RT-Lab实时仿真系统中建立了基于铁路功率调节器的光伏接入牵引供电系统仿真模型,并结合实际光照和牵引工况数据验证本文所提出的系统结构以及协调控制方法的有效性. 结果表明:本文所提出的系统结构以及协调控制方法能够实现牵引供电系统中光储系统的有效接入,再生制动能量回收率提升至86.7%,功率因数提升 6.4%,对谐波特别是高次谐波含有率有较大改善,满足光伏电能高效消纳及综合利用、电能质量动态综合补偿、再生制动能量回收多重需求.

     

  • 图 1  基于RPC的牵引供电系统综合补偿结构图

    Figure 1.  Comprehensive compensation structure of traction power supply system based on RPC

    图 2  RPC结构

    Figure 2.  Structure of RPC

    图 3  整体结构与协调控制框图

    Figure 3.  Block diagram of overall structure and coordinated control

    图 4  光储荷系统功率控制流程图

    Figure 4.  Flow chart of power control for “PV + battery + load” system

    图 5  补偿前、后三相侧电流变化

    Figure 5.  Three-phase side current changes before and after compensation

    图 6  不同工况下功率流情况

    Figure 6.  Power flow under different working conditions

    图 7  供电臂实际负荷情况

    Figure 7.  Actual load situation of left and right power supply arms

    图 8  不同光照情况下光伏输出功率

    Figure 8.  PV output power under different illuminations

    图 9  光储 + RPC接入前负序电流

    Figure 9.  Negative sequence current before PV and battery + RPC access

    图 10  光储 + RPC接入后2种光照下的负序电流

    Figure 10.  Negative sequence current under two kinds of illumination after PV and battery + RPC access

    图 11  光储 + RPC接入前后谐波电流含有率变化

    Figure 11.  Changes in current ratio of each harmonic before and after PV and battery + RPC access

    表  1  仿真模型主要参数

    Table  1.   Main parameters of simulation model

    子系统参数数值
    牵引变压器变比220/27.5
    降压变压器变比27.5/1
    变流器直流侧电压/V4000
    RPC直流电容/F0.02
    RPC交流电感/H0.0001
    光伏装机容量/MW3.265
    蓄电池容量/MW6
    下载: 导出CSV

    表  2  各次谐波电流含有率

    Table  2.   Current ratio of each harmonic

    谐波次数/次含有率/%谐波次数/次含有率/%
    39.725315.108
    52.683333.230
    72.750359.415
    91.750373.388
    111.575394.708
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-12-24
  • 修回日期:  2022-05-10
  • 网络出版日期:  2023-11-03
  • 刊出日期:  2022-05-12

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