High-proportion new energy access rural distribution network stands multi-target collaborative planning method

With the rapid advancement of new energy power generation technologies, a significant proportion of new energy sources is being integrated into rural distribution networks, which often feature weak grid infrastructures. This integration poses several challenges, including inadequate construction of rural distribution grids, low voltage levels, excessive network losses, and difficulties in managing the high influx of new energy sources. This study tackles the integration challenges of high proportions of new energy into rural distribution networks with weak grids. It identifies key issues such as low voltage, excessive network losses, and the efficient management of new energy sources. The authors propose a multi-objective coordinated planning model aimed at minimizing investment and operational costs, reducing voltage deviations, and maximizing the absorption of new energy. Distinct from existing methods, which suffer from low efficiency, this model introduces a rapid solution approach for optimal configurations. Vali-dation on a rural network with 180 nodes illustrates its effectiveness: it significantly reduces annual operating costs by 3,360,400 yuan, decreases voltage deviation by 64.6%, and increases new energy capacity by 31.5 MW, thus enhancing the network's performance and sustain ability.