Abstract: To explore a rapid and safe loop closure method applicable to rural power grid substations, this study utilizes measured data from a regional power grid in Inner Mongolia. Using the PSD power system simulation tool, power flow simulations were conducted to verify the action accuracy of the proposed loop closure method and device. The analysis indicates that, once the data-fusion-driven mechanism accurately identifies operating conditions suitable for loop closure, the switching process may cause fluctuations in bus voltage and line power flow, but the system remains stable. At the moment of loop closure, the short-circuit current of the associated bus reaches its maximum, though it remains below the breaking capacity. By applying pre-control strategies, post-switching component overload can be avoided. Furthermore, key issues requiring attention are discussed. The proposed data-fusion-driven loop closure method provides valuable reference for rapid and safe switching in rural substations, as well as for the advancement of intelligent distribution and self-healing control in regional power grids.