| 摘要 |
<p>Provided is a utility interconnection system having a simple configuration, with which reverse power flow from a battery to a system can be reliably prevented, while allowing reverse power flow from a solar battery to the system. A first output line (24), through which the output of a first DC/AC converter (23) connected to a solar battery is supplied, and a power line (13), which links a commercial power system (11) and a load (15), are connected at a first point (25). A second output line (35), through which the output of a second DC/AC converter (33) connected to a storage battery (4) is supplied, is connected to the power line (13) at a second point (36). The first point (25) is positioned closer to the commercial power system (11) than the second point (36) on the power line (13). An interrupt mechanism (37), which substantially interrupts the current flowing through the second output line (35), is provided, and the interrupt mechanism (37) is activated when active power flowing from the second point (36) to the first point (25) is detected on the power line (13).</p> |
