Management system, management method, power conversion apparatus, and management apparatus

1. A management system comprising:

a power conversion apparatus configured to convert, at least one of output power from a distributed power source and input power into the distributed power source, into AC power or DC power; and

a management apparatus, the management apparatus comprising:

a receiver configured to receive a power control message controlling the power conversion apparatus, from an external server of a business operator that manages a power system to which the distributed power source is connected; and

a transmitter configured to transmit the power control message to the power conversion apparatus,

wherein

the power conversion apparatus is configured to operate without following the power control message when there is a predetermined state, and

the power conversion apparatus is configured to prioritize an operation instructed by the power control message over an operation instructed by a user operation, in a state other than the predetermined state.

2. The management system according to claim 1 , wherein the predetermined state includes at least one of the following states:

a power-down state, wherein the power system is power-down;

a self-sustained running state, wherein the power conversion apparatus is separated from the power system;

a state wherein the receiver receives a special instruction by a user operation; and

a re-interconnection waiting time state for re-interconnecting with the power system.

3. The management system according to claim 1 , wherein

the power conversion apparatus is configured to ignore the power control message received from the management apparatus when the predetermined state is a power-down state.

4. A management system, comprising:

a power conversion apparatus configured to convert, at least one of output power from a distributed power source and input power into the distributed power source, into AC power or DC power; and

a management apparatus, the management apparatus comprising:

a receiver configured to receive a power control message controlling the power conversion apparatus, from an external server of a business operator that manages a power system to which the distributed power source is connected; and

a transmitter configured to transmit the power control message to the power conversion apparatus,

wherein

the power conversion apparatus is configured to operate without following the power control message when there is a predetermined state, and

the transmitter is configured to suspend transmission of the power control message when the predetermined state is a power-down state.

5. A management system, comprising:

a power conversion apparatus configured to convert, at least one of output power from a distributed power source and input power into the distributed power source, into AC power or DC power; and

a management apparatus, the management apparatus comprising:

a receiver configured to receive a power control message controlling the power conversion apparatus, from an external server of a business operator that manages a power system to which the distributed power source is connected; and

a transmitter configured to transmit the power control message to the power conversion apparatus,

wherein

the power conversion apparatus is configured to operate without following the power control message when there is a predetermined state,

the distributed power source is a rechargeable battery, and

when the power system returns from a power-down state to a recovery state, the transmitter is configured to transmit a message indicating a remaining amount of accumulated power in the rechargeable battery to the external server.

6. A management system, comprising:

a power conversion apparatus configured to convert, at least one of output power from a distributed power source and input power into the distributed power source, into AC power or DC power; and

a management apparatus, the management apparatus comprising:

a receiver configured to receive a power control message controlling the power conversion apparatus, from an external server of a business operator that manages a power system to which the distributed power source is connected; and

a transmitter configured to transmit the power control message to the power conversion apparatus,

wherein

the power conversion apparatus is configured to operate without following the power control message when there is a predetermined state,

the distributed power source is a rechargeable battery, and

the power conversion apparatus is configured to operate without following the power control message when the power control message is a message for instructions to discharge, and a remaining amount of accumulated power in the rechargeable battery is either below a first remaining amount or above a predetermined second remaining amount, wherein the predetermined second remaining amount is higher than the first remaining amount.

7. The management system according to claim 6 , wherein

the power conversion apparatus is configured to ignore the power control message received from the management apparatus, when the power control message is a message for instructions to discharge, and the remaining amount of accumulated power in the rechargeable battery is below the first remaining amount or exceeds the predetermined second remaining amount.

8. The management system according to claim 6 , wherein

the transmitter is configured to suspend transmission of the power control message when the power control message is a message for instructions to discharge, and the remaining amount of accumulated power in the rechargeable battery is below the first remaining amount or exceeds the predetermined second remaining amount.

9. A management method used in a management system comprising a management apparatus, a power conversion apparatus configured to convert, at least one of output power from a distributed power source and input power into the distributed power source, into AC power or DC power, and a display apparatus configured to display a state of the power conversion apparatus, the method comprising:

transmitting a power control message controlling the power conversion apparatus, from an external server of a business operator that manages a power system to which the distributed power source is connected, to the management apparatus;

transmitting the power control message, from the management apparatus to the power conversion apparatus; and

operating the power conversion apparatus without following the power control message when a predetermined state is detected,

wherein the power conversion apparatus prioritizes an operation instructed by the power control message over an operation instructed by a user operation, in a state other than the predetermined state.

10. A power conversion apparatus provided in a management system comprising a management apparatus, and configured to convert, at least one of output power from a distributed power source and input power into the distributed power source, into AC power or DC power, the power conversion apparatus comprising:

a receiver configured to receive a power control message controlling the power conversion apparatus from the management apparatus; and

a controller configured to control an operation of the power conversion apparatus without following the power control message when in a predetermined state,

wherein the controller is configured to prioritize an operation instructed by the power control message over an operation instructed by a user operation, in a state other than the predetermined state.

11. A management apparatus provided in a management system comprising a power conversion apparatus configured to covert, at least one output power from a distributed power source and input power into the distributed power source, into AC power or DC power, the management apparatus comprising:

a receiver configured to receive a power control message controlling the power conversion apparatus from an external server of a business operator that manages a power system to which the distributed power source is connected;

a transmitter configured to transmit the power control message to the power conversion apparatus; and

a controller configured to operate the power conversion apparatus without following the power control message when a predetermined state is met,

wherein the controller is configured to prioritize an operation corresponding to the power control message over an operation instructed by a user operation, in a state other than the predetermined state.