Utilisation of regenerative braking energy in adjacent power sections of railway systems

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-10-18 DOI:10.1049/elp2.12378

Liran Wu, Mingli Wu

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Abstract

Huge regenerative braking (RB) energy is generated in the AC traction power supply system (TPSS) which is related to safe operation and comprehensive energy utilisation. For the RB energy utilisation, the authors propose a railway regenerative braking power conditioner (RBPC) with no energy storage system (ESS) integrated which is located at the end of the power sections between adjacent traction substations (TSSs). First, the RB characteristics are studied based on a large amount of measured data, and the load power states are classified according to the load powers of adjacent power sections. Then, the RB energy utilisation scheme, transferring the RB power to the adjacent power section where traction power exists, has been studied. Moreover, a dual closed-loop control strategy for a back-to-back converter is adopted to achieve RB energy utilisation. Finally, a case study and an engineering application are carried out. The results have verified the feasibility of this method, which can illustrate that more than half of the RB energy can be mutually utilised in adjacent power sections.

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铁路系统相邻动力段再生制动能量的利用

交流牵引供电系统（TPSS）中会产生巨大的再生制动（RB）能量，这关系到系统的安全运行和能量的综合利用。为实现再生制动能量的利用，作者提出了一种不集成储能系统（ESS）的铁路再生制动功率调节器（RBPC），该调节器位于相邻牵引变电所（TSS）之间的供电段末端。首先，基于大量测量数据研究了再生制动功率调节器的特性，并根据相邻功率段的负载功率对负载功率状态进行了分类。然后，研究了 RB 能量利用方案，将 RB 功率转移到存在牵引功率的相邻功率段。此外，还采用了背靠背变流器的双闭环控制策略来实现 RB 能量利用。最后，还进行了案例研究和工程应用。结果验证了这一方法的可行性，说明相邻功率段可以相互利用一半以上的 RB 能量。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.