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A study on the reliability and performance of solar powered street lighting systems

机译：太阳能路灯系统的可靠性和性能研究

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This paper presents the results of a study on the reliability and performance of the solar-powered street lighting systems installed at the African University of Science and Technology (AUST) in Nigeria, a hot and humid environment. The technical performance of the systems was studied using the following performance indicators: system energy yield, capture loss, as well as the system performance ratio while the reliability of the systems was examined using a model developed from the findings from the maintenance and fault diagnosis of the systems. The model was used to predict the total failure and survival probability of the systems using the Weibull distribution. The performance evaluation during the monitored period (February 2012 to January 2015) indicated that the performance ratios of the systems vary from 70% to 89% and the energy yields of the systems ranging from 2.87 h/day to 5.57 h/day. The results from the reliability analysis also showed that when the stress concentration factor around the notch between the cable terminals in the charge controller increases, the charge controller will become overheated, which in turn affected other components of the systems. The implications of this study are also discussed for the design and development of future solar-powered street lighting systems.
机译：本文介绍了在炎热潮湿的尼日利亚非洲科技大学（AUST）安装的太阳能路灯系统的可靠性和性能的研究结果。使用以下性能指标研究了系统的技术性能：系统能量产量，捕获损耗以及系统性能比，同时使用根据维护和故障诊断发现的结果开发的模型来检查系统的可靠性。系统。该模型用于使用Weibull分布预测系统的总故障率和存活率。在受监控期间（2012年2月至2015年1月）的性能评估表明，系统的性能比率从70％到89％不等，系统的发电量在2.87 h / day至5.57 h / day之间。可靠性分析的结果还显示，当电荷控制器中电缆端子之间的槽口附近的应力集中系数增大时，电荷控制器将变得过热，进而影响系统的其他组件。还讨论了这项研究对未来太阳能路灯系统的设计和开发的意义。

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