New feeder load forecasting method and its application for New Distribution Grid based on "component - supply area" spatial relationship

The formulation of new distribution grid planning scheme needs to be based on the electrical calculation of power flow and short-circuit current of planning year, and the load forecasting of electrical components in the unit of feeder is the input condition of the calculation above. A grid planning load mapping method based on spatial membership relationship of "component — supply area" is proposed. Electrical load is mapped to spatial load in current year, and spatial predicted load is mapped back to electrical predicted load in planning year. The "two-way mapping" is used to indirectly realize the micro electrical load forecasting with line as the unit by using the mature space load forecasting method. This method has been applied to the planning project of "online power grid" of 10kV distribution grid in Lunan District, Tangshan and achieved good results. This method not only solves the problem that it is difficult to predict the feeder electrical load in the planning year, but also meets the refinement requirements of "online power grid" electrical calculation, and has strong practical feasibility.