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首页> 外文会议>2012 38th IEEE Photovoltaic Specialists Conference. >PV ramping in a distributed generation environment: A study using solar measurements
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PV ramping in a distributed generation environment: A study using solar measurements

机译：分布式发电环境中的光伏坡度：使用太阳能测量的研究

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Variability in Photovoltaic (PV) generation resulting from variability in the solar radiation over the PV arrays is a topic of continuing concern for those involved with integrating renewables onto existing electrical grids. The island of Lanai, Hawaii is an extreme example of the challenges that integrators will face due to the fact that it is a small standalone grid. One way to study this problem is to take high-resolution solar measurements in multiple locations and model simultaneous PV production for various sizes at those locations. The National Renewable Energy Laboratory (NREL) collected high-resolution solar data at four locations on the island where proposed PV plants will be deployed in the near future (Fig. 1). This data set provides unique insight into how the solar radiation may vary between points that are proximal in distance, but diverse in weather, due to the formation of orographic clouds in the center of the island. Using information about each proposed PV plant size, power output was created at high resolution. The team analyzed this output to understand power production ramps at individual locations and the effects of aggregating the production from all four locations. Hawaii is a unique environment, with extremely variable events occurring on a daily basis. This study provided an excellent opportunity for understanding potential worst-case scenarios for PV ramping. This paper provides an introduction to the datasets that NREL collected over a year and a comprehensive analysis of PV variability in a distributed generation scenario.
机译：对于那些将可再生能源整合到现有电网中的人们来说，由光伏阵列上太阳辐射的可变性引起的光伏发电（PV）的可变性是一个持续关注的话题。夏威夷的拉奈岛是一个很小的独立网格，这是集成商将面临的挑战的一个极端例子。研究此问题的一种方法是在多个位置进行高分辨率的太阳能测量，并为这些位置的各种尺寸的同时光伏发电建模。国家可再生能源实验室（NREL）在岛上的四个地点收集了高分辨率的太阳能数据，这些地点将在不久的将来部署拟议的光伏电站（图1）。该数据集提供了独特的见解，可了解由于岛屿中心地形的形成，太阳辐射在距离相近但天气不同的点之间如何变化。使用有关每个拟议的光伏电站规模的信息，可以高分辨率创建功率输出。该团队分析了此输出，以了解各个位置的发电量斜率以及汇总所有四个位置的发电量的效果。夏威夷是一个独特的环境，每天都有非常多变的事件发生。这项研究为了解潜在的光伏斜坡最坏情况提供了极好的机会。本文介绍了NREL一年来收集的数据集，并全面分析了分布式发电方案中的PV变异性。

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