By the year 2019, the number of people without access to electricity was 770 million, most of which lived in rural areas. The currently models for rural electrification are often limited in their electrical analysis, or focus on a idealistic optimal solution whilst ignoring the real hierarchical topology of power systems. This work proposes a rural electrification strategy that makes use of Geographic Information System (GIS), graph theory and terrain analysis to create the best electric network topology. It uses the GIS for Electrification (GISEle) tool while improving the former topological-focused analysis, to one that considers other aspects of electric network planning such as cable sizing based on current-carrying capacity constraints and the sharing of substations connections. By considering these factors, a better and more realistic topology is achieved. Furthermore, an electrical analysis was performed to endorse the topology found, by executing load flow analysis in critical parts of the grid, in order to investigate steady-state voltages, as well as substation and line loading. The strategy proposed was applied to a real case study of grid expansion in the municipality of Cavalcante, in a rural area in Brazil. The goal is to find the most cost-efficient network topology reaching up to 100% of the local population through an expansion of the MV distribution network. The results show that by using the new approach proposed, a reduction of up to 47% (compared to a standard minimum spanning tree procedure) of the total investment cost in line deployment was achieved. This reduction is possible through a proper sizing, based on the power supplied, of the MV cables used in the electrification planning.

到2019年，无电人口7.7亿，其中大部分生活在农村。当前的农村电气化模型通常在电气分析方面受到限制，或者专注于理想化的最佳解决方案，而忽略了电力系统的真实分层拓扑结构。这项工作提出了一种利用地理信息系统 (GIS)、图论和地形分析来创建最佳电网拓扑的农村电气化战略。它使用用于电气化的 GIS (GISEle) 工具，同时改进了以前以拓扑为重点的分析，使其考虑了电网规划的其他方面，例如基于载流能力限制和变电站连接共享的电缆尺寸。综合考虑这些因素，实现了更好和更现实的拓扑。此外，通过在电网的关键部分执行潮流分析，进行了电气分析以认可发现的拓扑，以研究稳态电压以及变电站和线路负载。所提出的策略被应用于巴西农村地区卡瓦尔坎特市电网扩展的真实案例研究。目标是通过扩展 MV 配电网络，找到能够覆盖 100% 当地人口的最具成本效益的网络拓扑。结果表明，通过使用所提出的新方法，线路部署的总投资成本减少了多达 47%（与标准的最小生成树程序相比）。根据所提供的功率，通过适当的调整大小可以减少这种情况，