| 摘要 |
The present invention relates to a detection device, method, and program that make it possible to simply and inexpensively detect the state of electrical power. A current transformer (111c) measures the current (ic1) at a commercial power supply (103) side from a connection point (C). A current transformer (111p) measures the current (ip1) at a solar power generation system (102) side from a connection point (C). A current direction detection unit (161c) detects the direction of the current (ic1) and supplies a current direction detection signal (Dc) to an EXOR circuit (152). A current direction detection unit (161p) detects the direction of the current (ip1) and supplies a current direction detection signal (Dp) to the EXOR circuit (152). The EXOR circuit (152) calculates the exclusive OR of the current direction detection signal (Dc) and the current direction detection signal (Dp), and supplies an EXOR signal to a flow direction detection unit (173). The flow direction detection unit (173) detects the flow direction of electrical power in the commercial power system on the basis of the EXOR signal. The present invention can be applied, for example, to an electrical power monitoring system that carries out monitoring of electrical power inside the home. |
