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Application US20200091723


Published 2020-03-19

Detection Device, Power Conditioner, Detection Method, And Storage Medium

A detection device includes a first detection unit that detects whether a power source may be in an islanding operation based on a frequency of an power supplied from a power source connected to a system, a power processing unit that changes the amount of power supplied from the power supply to the system in response to that the first detection unit detects that the power source may be in the islanding operation, a second detection unit that detects a voltage of a system with the power supply amount having been changed, and a disconnection processing unit that determines whether to disconnect a power source from a system in response to a change in a voltage of a system with the power supply amount having been changed.



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3 Independent Claims

  • 1. A detection device comprising: a first detection unit that detects whether a power source connected to a system is possibly in an islanding operation based on a frequency of an power supplied from the power source; a power processing unit that changes a power supply amount from the power source to the system in response to that the first detection unit detects that the power source may be in an islanding operation; a second detection unit that detects a voltage of the system with the power supply amount having been changed; and a disconnection processing unit that determines whether to disconnect the power source from the system in response to a change in the voltage of the system detected with the power supply amount having been changed.

  • 16. A detection method comprising: detecting by a detection device detecting whether a power source connected to a system may be in an islanding operation based on a frequency of an power supplied from a power source; power processing by the detection device changing a power supply amount from the power source to the system in response to that a first detection unit detects that the power source may be in an islanding operation detecting by the detection device detecting a voltage of the system with the power supply amount having been changed; and disconnection processing by the detection device determining whether to disconnect the power source from the system in response to a change in the voltage of the system detected with the power supply amount having been changed.

  • 17. A computer readable storage medium that stores a computer program for causing a computer to execute: detecting whether a power source connected to a system may be in an islanding operation based on a frequency of an power supplied from a power source; conducting power processing for changing a power supply amount from the power source to the system in response to that a first detection unit detects that the power source may be in the islanding operation; detecting a voltage of the system with the power supply amount having been changed; and disconnection processing for determining whether to disconnect the power source from the system in response to a change in the voltage of the system detected with the power supply amount having been changed.