KEYWORDS: Photovoltaics, Solar radiation models, Solar energy, Solar radiation, Solar cells, Clouds, Temperature metrology, Systems modeling, Light, Roads
In order to further improve the refinement of power grid planning, improve the quality of enterprise operation and economic benefits, a power grid planning method that considers the uncertainty of source and load is proposed in view of the uncertainty of distributed photovoltaic output and load forecasting. First of all, in view of the uncertain characteristics of distributed photovoltaic output, the concept of "photovoltaic output shielding factor" is innovatively proposed, and a probability distribution model of its daily and seasonal characteristics is established to analyze the spatial correlation of photovoltaic output. Then, on the basis of considering the investment cost of new lines, the cost of network loss, and the loss of light abandonment, a grid planning model considering new energy access is established. Finally, an empirical analysis is carried out through a typical power grid, and the results show that the model and algorithm proposed in this paper are effective and feasible.
The planning model often pursues the minimization of investment and operating costs, and does not consider the economic issues of the planning scheme under the full time sequence condition in the traditional power grid planning process. The key factors affecting the cost and benefit of the full time sequence of the power grid is analyzed, and the concept of full time sequence is integrated into the development plan of the power grid with the support of panoramic simulation technology. The full-time sequence cost and benefit calculation model is established on the basis of consideration of construction, operating, and reliability, combined with the impact of the planning scheme on the safety, reliability and operating conditions of the power grid. Finally, the optimal construction sequence of the power grid planning scheme is determined through the economic analysis of the planning scheme. An empirical analysis is carried out through a typical power grid, and the results show that the model and algorithm proposed in this paper are effective and feasible.
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