Power Allocation Strategy of Urban Rail Hybrid Energy Storage System Based on Double-Layer Low-Pass Filter

WANG Yi; TANG Yuan; LIU Houlin; WANG Jinyu

doi:10.3969/j.issn.1008-0198.2025.04.014

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Power Allocation Strategy of Urban Rail Hybrid Energy Storage System Based on Double-Layer Low-Pass Filter

更新时间：2025-12-08

- Power Allocation Strategy of Urban Rail Hybrid Energy Storage System Based on Double-Layer Low-Pass Filter
- Vol. 45, Issue 4, Pages: 96-103(2025)
- 作者机构：
  
  湖南工业大学交通与电气工程学院,湖南,株洲,412007
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.1008-0198.2025.04.014
  CLC： TM910
- Published Online：05 September 2025，
  
  Published：05 September 2025
- 稿件说明：
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王怡, 唐渊, 刘厚霖, 王进雨. 基于双层低通滤波的城轨混合储能系统功率分配策略[J]. 湖南电力, 2025, 45(4): 96-103.

WANG Yi, TANG Yuan, LIU Houlin, et al. Power Allocation Strategy of Urban Rail Hybrid Energy Storage System Based on Double-Layer Low-Pass Filter[J]. 2025, 45(4): 96-103.
王怡, 唐渊, 刘厚霖, 王进雨. 基于双层低通滤波的城轨混合储能系统功率分配策略[J]. 湖南电力, 2025, 45(4): 96-103. DOI： 10.3969/j.issn.1008-0198.2025.04.014.

WANG Yi, TANG Yuan, LIU Houlin, et al. Power Allocation Strategy of Urban Rail Hybrid Energy Storage System Based on Double-Layer Low-Pass Filter[J]. 2025, 45(4): 96-103. DOI： 10.3969/j.issn.1008-0198.2025.04.014.

摘要

为克服传统低通滤波（low-pass filter

LPF）功率分配策略在城市轨道交通混合储能系统（hybrid energy storage system

HESS）中造成的功率延时和功率循环问题

提出一种基于双层LPF的城轨HESS功率分配策略。第一层LPF通过去除功率波动中的极端分量

防止牵引网受冲击;第二层通过LPF采用改进的二阶滤波传递函数

优化交接频率处的截止特性

消除一阶滤波器高频响应时的积分效应。相较于传统方法

双层滤波策略能够优化储能设备的功率输出

减少过冲和过放现象

延长电池寿命

提高系统的动态响应能力。仿真结果表明

所提策略能有效提高牵引网电压稳定性、节能率和响应速度

同时降低电池充放电深度

延长储能器件的使用寿命。

Abstract

In order to overcome the problems of power delay and power cycling caused by the traditional low-pass filter (LPF) power allocation strategy in the hybrid energy storage system(HESS) of urban rail transit

a power allocation strategy based on two-layer LPF is proposed for urban rail HESS. The first layer of LPF prevents the traction network from being impacted by removing the extreme components in the power fluctuation. The second layer adopts an improved second-order filter transfer function through LPF to optimize the cutoff characteristics at the handover frequency and eliminate the integral effect of the first-order filter during the high-frequency response. Compared with traditional methods

the double-layer filtering strategy can optimize the power output of energy storage devices

reduce overcharge and overdischarge phenomena

extend battery life

and improve the dynamic response capability of the system. The simulation results show that the proposed strategy can effectively improve the voltage stability

energy-saving rate and response speed of the traction network

while reducing the depth of battery charging and discharging and prolonging the service life of energy storage devices.

关键词

Keywords

references

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