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Fractal-based cloud shadow and irradiance model for power system analysis with high penetration of photovoltaics.

机译：基于分形的云影和辐照度模型，用于光伏系统高穿透力的电力系统分析。

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摘要

Distributed photovoltaic (PV) power generation systems are being rapidly deployed worldwide, causing technical problems such as reverse power flows, voltage rise and abnormal operation of voltage control devices in distribution feeders, and real and reactive power transients that affect the operation of the bulk transmission system. To fully understand and address these problems, extensive computer simulation studies are required. As a prerequisite, modeling of PV generation with satisfactory spatial and temporal resolution plays a key role. To this end, this dissertation sets forth a fractal-based cloud shadow and irradiance model that can be used to recreate the power generation of rooftop PV systems embedded in a distribution feeder, or that of a utility-scale PV power plant, during days with low-altitude cumulus clouds. Because of its clearly defined edge and the deep shadow it creates, the cumulus cloud is considered as the cloud type that contributes the most to fluctuations of power output from distributed PV systems, which is a primary concern of system engineers. Realistically shaped cumulus cloud shadows are modeled as fractals. Technical details of the model development, validation and tuning are presented. A case study that focuses on impacts to Load Tap Changer actions demonstrates the potential of the developed model in power system analysis with high penetration of photovoltaics.
机译：分布式光伏（PV）发电系统正在全球范围内快速部署，引起技术问题，例如反向潮流，电压上升和配电馈线中电压控制设备的异常运行，以及影响大容量变速器运行的有功功率和无功功率瞬变系统。为了充分理解和解决这些问题，需要进行大量的计算机仿真研究。前提条件是，具有令人满意的时空分辨率的光伏发电建模起着关键作用。为此，本文提出了一种基于分形的云影和辐照度模型，该模型可用于在几天之内重新生成嵌入在配电馈线或公用事业规模的光伏电站中的屋顶光伏系统的发电量。低空积云。由于积云清晰的边缘和产生的深阴影，积云被认为是对分布式光伏系统输出功率波动影响最大的云类型，这是系统工程师最关心的问题。逼真的形状的积云阴影被建模为分形。介绍了模型开发，验证和调整的技术细节。着重于对有载分接开关动作的影响的案例研究证明了开发模型在具有高光伏渗透率的电力系统分析中的潜力。

著录项

  • 作者

    Cai, Chengrui.;

  • 作者单位

    Iowa State University.;

  • 授予单位 Iowa State University.;
  • 学科 Engineering Electronics and Electrical.;Energy.
  • 学位 Ph.D.
  • 年度 2014
  • 页码 111 p.
  • 总页数 111
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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