Influência do lago de Sobradinho no escoamento atmosférico e na camada limite interna na região de Casa Nova

Abstract

In an attempt to reduce global warming, there is strong growth in renewable energy sources on a global and national scale. Wind and solar generation play a prominent role in this scenario due to cost-benefit, sustainability and availability around the world. In some regions there is a complementarity of renewable sources, which helps to minimize a major problem, intermittency. This leads to a new trend of integrating generation plants from multiple primary sources. To better explore the benefits of hybrid plants, it is essential to understand the behavior of primary sources. Therefore, the objective of this work is to analyze in detail the behavior of the wind primary source in the region of a hybrid plant (wind and solar) with storage on the banks of the Sobradinho Hydroelectric Plant lake. In the analysis, data measured with anemometric tower and LIDAR (Light Detection and Ranging) and data simulated with the WRF (Weather Research and Forecasting) numerical model were used, refined on a microscale with the WindNinja model, to better understand the behavior of local atmospheric flow and the influence of Lake Sobradinho. in this process. The results of the WRF model showed a good correspondence to those measured with the anemometric tower and the LIDAR. The result of local wind is a sum of large-scale effects, orography, surface roughness and thermal effects such as lake breezes. The thermal and roughness effects of the lake are very relevant on the lake itself but have little reach beyond the edges. The most relevant local effect to influence energy generation in the hybrid plant is the orography of the lake and its surroundings.