瑞典铁路牵引供电站谐波电压水平测绘与评估

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Electric Power Systems Research Pub Date : 2024-11-05 DOI:10.1016/j.epsr.2024.111195

Rafael S. Salles , Rebecca Asplund , Sarah K. Rönnberg

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引用次数: 0

摘要

评估铁路电力系统（ERPS）中的谐波畸变测量值需要评估不同时间尺度下的时变行为、相互作用和性能。本文旨在绘制和评估瑞典铁路供电系统 13 个牵引变流器站的谐波电压水平，其结果具有直接的实际意义。为此，本文分析了公共电网和铁路电网在 69 周内的测量数据。探讨了谐波电压频谱和总谐波失真 (THD) 变化的统计值。公共电网侧的测量值采用每周第 95 百分位数进行调查，并通过比较 IEC 61,000-3-6 推荐的规划水平来评估性能。周内变化补充了 THD 时变行为的信息。由于铁路电网方面没有标准参考限值可供比较，因此对第 95 百分位数、最小日值和日内变化进行了探讨，以了解基于时间的行为。对铁路网侧进行扩展分析，以突出基于 10 分钟值的测量时间聚集的某些方面，并使用时间序列趋势分析来确认交通规划的影响。讨论和结论涉及铁路运行、牵引变流站部署的技术、时变行为、交通规划影响、测量时间聚集和频谱模式。

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Mapping and assessment of harmonic voltage levels for railway traction supply stations in Sweden

Assessing harmonic distortion measurements in the electric railway power systems (ERPS) requires evaluating the time-varying behavior, interactions, and performance in different time scales. This paper aims to map and assess harmonic voltage levels in 13 traction converter stations for the Swedish railway power supply system, with findings that have direct practical implications. For that, measurements from the public and railway grid sides for 69 weeks are analyzed. Statistical values are explored for the harmonic voltage spectra and total harmonic distortion (THD) variation. The public grid side measurements are investigated using 95th percentile weekly values, and performance is evaluated by comparing the recommended planning levels of IEC 61,000–3–6. The intraweek variation complements the information about the time-varying behavior of the THD. The 95th percentile, minimum daily values, and intraday variation are explored to understand the time-based behavior since there are no reference limits from standards for comparison, looking to the railway grid side. Extended analysis is placed on the railway grid side to highlight some aspects of measurement time-aggregation based on 10-min values, and time-series trend analysis is used to confirm traffic planning impact. Discussion and findings regarding railway operation, the technology deployed at the traction converter station, time-varying behavior, traffic planning impact, measurement time-aggregation, and spectra patterns were presented.

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来源期刊

Electric Power Systems Research 工程技术-工程：电子与电气

CiteScore

7.50

自引率

17.90%

发文量

963

审稿时长

3.8 months

期刊介绍： Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview. • Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation. • Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design. • Substation work: equipment design, protection and control systems. • Distribution techniques, equipment development, and smart grids. • The utilization area from energy efficiency to distributed load levelling techniques. • Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.