A Stability Enhancement Method Based on a Novel Orthogonal Signal Generator for Railway Electrification Train-Grid System

IF 4.6 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Journal of Emerging and Selected Topics in Power Electronics Pub Date : 2024-07-25 DOI:10.1109/JESTPE.2024.3433516

Chunxu Lin;Xinglai Ge;Kexin Wang;Huimin Wang;Qingli Deng;Yi Wang

{"title":"A Stability Enhancement Method Based on a Novel Orthogonal Signal Generator for Railway Electrification Train-Grid System","authors":"Chunxu Lin;Xinglai Ge;Kexin Wang;Huimin Wang;Qingli Deng;Yi Wang","doi":"10.1109/JESTPE.2024.3433516","DOIUrl":null,"url":null,"abstract":"The low-frequency oscillation (LFO) threatens the safe and stable operation of the railway electrification train-grid (RETG) system, and high-performance stability enhancement methods are desirable. However, many methods neglect the dynamic of the orthogonal signal generator (OSG), resulting in suboptimal performance. To address this, a stability enhancement method based on a novel and simple OSG is proposed in this article, which can suppress the LFO while providing fast dynamic performance. In this scheme, an impedance model of the RETG system is initially constructed. Then, with the impedance-based stability criterion, the impact of current OSG method on stability of the RETG system is analyzed. Accordingly, a current reference values-based OSG (CRV-OSG) is proposed. Through stability comparison and robustness analysis, it is revealed that the proposed CRV-OSG method is helpful for system stability enhancement, and meanwhile has satisfactory adaptability to variations in traction grid parameters. Eventually, extensive simulations and experimental tests are implemented to verify the steady state and dynamic performances of the proposed method.","PeriodicalId":13093,"journal":{"name":"IEEE Journal of Emerging and Selected Topics in Power Electronics","volume":null,"pages":null},"PeriodicalIF":4.6000,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Journal of Emerging and Selected Topics in Power Electronics","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10609391/","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}

引用次数: 0

Abstract

The low-frequency oscillation (LFO) threatens the safe and stable operation of the railway electrification train-grid (RETG) system, and high-performance stability enhancement methods are desirable. However, many methods neglect the dynamic of the orthogonal signal generator (OSG), resulting in suboptimal performance. To address this, a stability enhancement method based on a novel and simple OSG is proposed in this article, which can suppress the LFO while providing fast dynamic performance. In this scheme, an impedance model of the RETG system is initially constructed. Then, with the impedance-based stability criterion, the impact of current OSG method on stability of the RETG system is analyzed. Accordingly, a current reference values-based OSG (CRV-OSG) is proposed. Through stability comparison and robustness analysis, it is revealed that the proposed CRV-OSG method is helpful for system stability enhancement, and meanwhile has satisfactory adaptability to variations in traction grid parameters. Eventually, extensive simulations and experimental tests are implemented to verify the steady state and dynamic performances of the proposed method.

查看原文本刊更多论文

基于新型正交信号发生器的铁路电气化列车-电网系统稳定性增强方法

低频振荡（LFO）威胁着铁路电气化列车电网（RETG）系统的安全稳定运行，因此需要高性能的稳定性增强方法。然而，许多方法忽视了正交信号发生器（OSG）的动态特性，导致性能不理想。针对这一问题，本文提出了一种基于新颖、简单的 OSG 的稳定性增强方法，它可以抑制 LFO，同时提供快速的动态性能。在该方案中，首先要构建 RETG 系统的阻抗模型。然后，利用基于阻抗的稳定性准则，分析当前 OSG 方法对 RETG 系统稳定性的影响。据此，提出了基于电流参考值的 OSG（CRV-OSG）。通过稳定性比较和鲁棒性分析，发现所提出的 CRV-OSG 方法有助于增强系统稳定性，同时对牵引电网参数变化具有令人满意的适应性。最后，通过大量的仿真和实验测试，验证了所提方法的稳态和动态性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

IEEE Journal of Emerging and Selected Topics in Power Electronics ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

12.50

自引率

9.10%

发文量

547

审稿时长

3 months

期刊介绍： The aim of the journal is to enable the power electronics community to address the emerging and selected topics in power electronics in an agile fashion. It is a forum where multidisciplinary and discriminating technologies and applications are discussed by and for both practitioners and researchers on timely topics in power electronics from components to systems.