Due to the greater detailing in distribution systems modeling, it is necessary the seek for reliable reduction methods that improve the simulation time, while maintaining the precision of the power flow solution. This work considers the efficient idea regarding Kron reduction and establishes a mathematically exact reduction method to explicitly eliminate buses without loads and generation connection in a three-phase four-wire multi-grounded distribution feeder. Hence, the method is incorporated into the robust Four-conductor Current Injection Method (FCIM) and the results obtained for Kersting’s NEV Test Feeder and IEEE 123 buses are quite encouraging, presenting both an excellent accuracy in the same order of the FCIM’s tolerance and a significant improvement in its computational time. The proposed method is flexible to guarantee exactness and considerable time savings to utility companies when performing analyses that need power flow solutions, e.g., planning studies in modern DS.

中文翻译：

---

电力系统应用的扩展 Kron 方法

由于配电系统建模更加详细，因此有必要寻求可靠的减少方法，以缩短仿真时间，同时保持潮流解决方案的精度。这项工作考虑了关于克朗减少的有效想法，并建立了一种数学上精确的减少方法，以明确地消除三相四线多接地配电馈线中没有负载和发电连接的母线。因此，该方法被结合到稳健的四导体电流注入方法 (FCIM) 中，Kersting 的 NEV 测试馈线和 IEEE 123 总线获得的结果非常令人鼓舞，表现出与 FCIM 容差相同数量级的出色精度和其计算时间显着改善。