Time and frequency domain methods to evaluate grounding strategies for medium voltage DC shipboard power systems
Time and frequency domain methods to evaluate grounding strategies for medium voltage DC shipboard power systems
复制标题
评估中压直流船用电力系统接地策略的时域和频域方法
DOI：
10.1109/ests.2013.6523709
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
A. Card
中科院分区：
文献类型：
--
作者：
L. Graber;M. Steurer;J. Kvitkovic;M. Kofler;S. Pekarek;R. Howard;A. Taher;M. Mazzola;A. Card
船载电力系统的几个关键性能参数受到所采用的接地方案的影响。接地方案影响开关事件和故障期间电压瞬变的性质、接地故障的可识别性和可定位性、故障电流水平和电能质量。电力系统仿真在选择合适的接地方案和优化其组件方面发挥着重要作用。通常用于电力系统分析的工具需要仔细测试，以确定它们是否适合对不同接地方案（特别是高频瞬变）的影响进行建模。本文阐明了特定于接地模型的建模和验证技术。此外，还提供了对基于散射参数的新型电力系统建模技术的研究，以提高感兴趣的更高频率的精度。还介绍了一个旨在研究不同类型接地方案影响的测试台，并提供了频域中的首次表征测量。本文最后展望了未来的工作，重点是对所开发模型的严格验证。
Several key performance parameters of shipboard power systems are affected by the grounding scheme applied. The grounding scheme impacts the nature of voltage transients during switching events and faults, identifiability and locatability of ground faults, fault current levels, and power quality. Power system simulations play an important role in choosing an appropriate grounding scheme and optimizing its components. The tools typically used for power system analysis need to be carefully tested to determine if they are appropriate for modeling effects of different grounding schemes and in particular the high frequency transients. This paper sheds light on modeling and validation techniques specific to grounding models. Furthermore, insight is provided to present research into new types of power system modeling techniques based on scattering parameters for improved accuracy at higher frequencies of interest. A testbed designed to study the impact of different types of grounding schemes is also introduced and first characterization measurements in the frequency domain provided. The paper concludes with an outlook to future work, which will focus on rigorous validation of the models developed.