Patent ID: 11967927
Assignee: OMRON CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A solar power generation system, comprising:
a string including a plurality of solar cell module groups connected in series with each other, the solar cell module groups each including one or a plurality of solar cell modules connected in series;
an inverter connected to the string and configured to convert DC power output from the string to AC power;
a first shut-off device connected to a first electric path connecting between the plurality of solar cell module groups; and
a second shut-off device connected to a second electric path connecting between the plurality of solar cell module groups different from the plurality of solar cell module groups connected to the first electric path, wherein
the plurality of solar cell module groups in the string each have an open circuit voltage equal to or less than a predetermined open circuit voltage,
the first shut-off device is connected to a power line connected to the second shut-off device, the first shut-off device configured to cut off a connection between the plurality of solar cell module groups connected to the first electric path in response to a first control signal from the inverter, and
the second shut-off device is connected to the first shut-off device in a two-way communicable manner, the second shut-off device being driven by an electrical power supplied from the first shut-off device via the power line, the second shut-off device configured to cut off a connection between the plurality of solar cell module groups connected to the second electric path in response to a second, direct control signal from the first shut-off device.