SOLAR POWER GENERATION DEVICE

摘要

A transmitting circuit (14) is connected to a power line (8) at current flow-in sides to solar battery strings (7A and 7B), and a receiving circuit (15) is connected to the power line (8) at current flow-out sides to the solar battery strings (7A and 7B). An attenuating circuit (4) connected in series to a bypass diode (5) is provided in a bypass circuit (3). The transmitting circuit (14) transmits a periodic signal of a predetermined frequency to the power line (8). The receiving circuit (15) receives via the solar battery strings (7A and 7B) a transmission signal transmitted from the transmitting circuit (14) to the power line (8). A determining circuit (19) determines that, when it is detected that an amplitude of a transmission signal received by the receiving circuit (15) is attenuated by a predetermined value or more, direct-current power is conducted to the bypass circuit (3).