Distribution system accident recovery method, and distribution system's actual load and its width estimating device, method and program

摘要

PROBLEM TO BE SOLVED: To enable an estimation device to accurately recognize an output of a distributed power supply for each section and an active power consumed by a load, and to enable the estimation device to control only a section switch in consideration of its state to perform recovery from an accident.SOLUTION: Input processing of input data is performed, and the input processed data is stored (S1). Next, an accident section determination unit determines an accident section (S2). An output of a distributed power supply immediately before an accident, and a power consumed by a load are estimated (S3). The estimation at this step is performed by using a scatter diagram, a regression expression, or any one of the regression expression and independent component analysis. Widths of estimation values of the estimated output of the distributed power supply and the estimated power consumed by the load are calculated (S4). Then, processing for recovery from an accident is performed (S5). For the processing for recovery from an accident, the estimation device controls only a section switch to perform accident recovery for only the power consumption estimation value of the load, with a limit of the maximum allowable capacity of a power distribution system.