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首页> 外文学位 >26+ Year Old Photovoltaic Power Plant: Degradation and Reliability Evaluation of Crystalline Silicon Modules -- South Array.
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26+ Year Old Photovoltaic Power Plant: Degradation and Reliability Evaluation of Crystalline Silicon Modules -- South Array.

机译：具有26年以上历史的光伏电站：结晶硅模块的退化和可靠性评估-南阵列。

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摘要

As the use of photovoltaic (PV) modules in large power plants continues to increase globally, more studies on degradation, reliability, failure modes, and mechanisms of field aged modules are needed to predict module life expectancy based on accelerated lifetime testing of PV modules. In this work, a 26+ year old PV power plant in Phoenix, Arizona has been evaluated for performance, reliability, and durability. The PV power plant, called Solar One, is owned and operated by John F. Long's homeowners association. It is a 200 kW dc, standard test conditions (STC) rated power plant comprised of 4000 PV modules or frameless laminates, in 100 panel groups (rated at 175 kW ac). The power plant is made of two center-tapped bipolar arrays, the north array and the south array. Due to a limited time frame to execute this large project, this work was performed by two masters students (Jonathan Belmont and Kolapo Olakonu) and the test results are presented in two masters theses. This thesis presents the results obtained on the south array and the other thesis presents the results obtained on the north array. Each of these two arrays is made of four sub arrays, the east sub arrays (positive and negative polarities) and the west sub arrays (positive and negative polarities), making up eight sub arrays. The evaluation and analyses of the power plant included in this thesis consists of: visual inspection, electrical performance measurements, and infrared thermography. A possible presence of potential induced degradation (PID) due to potential difference between ground and strings was also investigated. Some installation practices were also studied and found to contribute to the power loss observed in this investigation. The power output measured in 2011 for all eight sub arrays at STC is approximately 76 kWdc and represents a power loss of 62% (from 200 kW to 76 kW) over 26+ years. The 2011 measured power output for the four south sub arrays at STC is 39 kWdc and represents a power loss of 61% (from 100 kW to 39 kW) over 26+ years. Encapsulation browning and non-cell interconnect ribbon breakages were determined to be the primary causes for the power loss.
机译：随着全球大型发电厂中光伏（PV）模块的使用不断增加，需要对光伏组件的退化，可靠性，故障模式和现场老化模块的机理进行更多研究，以基于光伏模块的加速寿命测试来预测模块的预期寿命。在这项工作中，对位于亚利桑那州凤凰城的一家已有26年历史的光伏电站进行了性能，可靠性和耐用性评估。该光伏电站称为Solar One，由John F. Long的房主协会拥有和运营。它是200 kW直流电，标准测试条件（STC）额定功率的发电厂，由4000个光伏模块或无框架层压板组成，分为100个面板组（额定交流电175 kW）。该发电厂由两个中心抽头的双极阵列组成，北阵列和南阵列。由于执行此大型项目的时间有限，这项工作是由两名硕士生（乔纳森·贝尔蒙特和科拉波·奥拉库努）完成的，测试结果在两名硕士论文中给出。本论文介绍了在南阵列上获得的结果，另一篇论文介绍了在北阵列上获得的结果。这两个阵列均由四个子阵列组成，东子阵列（正负极性）和西子阵列（正负极性）组成八个子阵列。本文对发电厂的评估和分析包括：目视检查，电气性能测量和红外热成像。还研究了由于地面与弦之间的电势差而可能引起的潜在退化（PID）。还研究了一些安装方法，发现它们会导致本次调查中观察到的功率损耗。在2011年，STC的所有八个子阵列的功率输出约为76 kWdc，在26年以上的时间内，功率损耗为62％（从200 kW降至76 kW）。 2011年，STC的四个南子阵列的功率输出为39 kWdc，在26年以上的时间内，功率损耗为61％（从100 kW到39 kW）。封装褐变和非电池互连带断裂被确定为造成功率损耗的主要原因。

著录项

  • 作者

    Olakonu, Kolapo.;

  • 作者单位

    Arizona State University.;

  • 授予单位 Arizona State University.;
  • 学科 Energy.;Alternative Energy.
  • 学位 M.S.
  • 年度 2012
  • 页码 106 p.
  • 总页数 106
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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