The coordinate evaluation of grid based on power import and export capacity

The coordinate evaluation of grid is about the matching degree between capacity of power import and export for a level grid, it is important to power network planning. Considering the power transmission direct, the definition of equivalent import capacity and the equivalent export one are proposed, the import one includes generation, DC converter station, tie line, step-up substation and so on, uniformly, the export one includes direct load capacity, step-down substation and so on. The coordinate evaluation criterion is present based on Code about power system. Finally, a provincial power grid is used to demonstrate the calculation of equivalent import capacity and equivalent export one, and the coordinate of the provincial power grid is analyzed based on the evaluation criterion.