STATE ESTIMATION DEVICE, STATE ESTIMATION METHOD AND PROGRAM

摘要

According to an embodiment, a state estimation apparatus includes detector, calculator, estimator and specifying unit. Detector detects a state change of any of electrical devices based on measurement data of a current flowing in a distribution line supplies power to the devices. Calculator calculates a current waveform change and a power change associated with the state change based on the measurement data. Estimator estimates a candidate originating from the state change based on the current waveform change. Specifying unit specifies a device caused the state change and a type of the state change based on the power change and an estimation result of the candidate.