A centralized voltage control device connected, via a communication network, to local voltage control devices connected to voltage control apparatuses, including: a transmission and reception unit receiving the number of times a tap position is changed per fixed time of the voltage control apparatus from the local voltage control device; a dead-zone-width updating unit increasing a dead zone width when the number of times a tap position is changed in a voltage control apparatus of a transformer type is a threshold or larger; and a voltage-upper-and-lower-limit-value determining unit determining the voltage upper limit value and the voltage lower limit value for each local voltage control device and issuing a command regarding these values to each local voltage control device, and determining the voltage upper limit value and the voltage lower limit value of the voltage control apparatus of a transformer type on the basis of the dead zone width.

The present disclosure proposes a power flow analysis device and a power flow analysis method for an AC/DC hybrid system. Wherein, the device comprises: a memory being stored a computer program; and a processor performing the following steps when executing the computer program: obtaining an AC system voltage and a commutation reaction of the DC transmission system, a first trigger angle of the rectifier, and a second trigger angle of the inverter; constructing an AC equivalent model according to the AC system voltage, the commutation reaction, the first trigger angle, and the second trigger angle; and performing a power flow calculation according to the AC equivalent model to obtain a power flow analysis result of the AC/DC hybrid system. Therefore, the power flow analysis and calculation problem of the AC/DC hybrid system is transformed into the power flow analysis and calculation problem of the pure AC system, which overcomes the problem that the DC system variables are not easily decoupled in the power flow analysis and calculation, and takes into account the efficiency and accuracy of the power flow calculation.

The present disclosure proposes a power flow analysis device and a power flow analysis method for an AC/DC hybrid system. Wherein, the device comprises: a memory being stored a computer program; and a processor performing the following steps when executing the computer program: obtaining an AC system voltage and a commutation reaction of the DC transmission system, a first trigger angle of the rectifier, and a second trigger angle of the inverter; constructing an AC equivalent model according to the AC system voltage, the commutation reaction, the first trigger angle, and the second trigger angle; and performing a power flow calculation according to the AC equivalent model to obtain a power flow analysis result of the AC/DC hybrid system. Therefore, the power flow analysis and calculation problem of the AC/DC hybrid system is transformed into the power flow analysis and calculation problem of the pure AC system, which overcomes the problem that the DC system variables are not easily decoupled in the power flow analysis and calculation, and takes into account the efficiency and accuracy of the power flow calculation.

A cabin interior arrangement 1 for an aircraft is proposed that comprises a first cabin interior object and a second cabin interior object 3a, b, comprising a power transmitting device 5 for transmitting power from an aircraft electrical system 7, wherein the power transmitting device 5 is arranged on the first cabin interior object 3a, comprising a power receiving device 6 for receiving the power from the power transmitting device 5, wherein the power receiving device 6 is arranged on the second cabin interior object 3b, wherein the power transmitting device 5 and the power receiving device 6 are embodied as a power transfer arrangement 2 for supplying the power to a mobile terminal 4, wherein the power transmitting device 5 and the power receiving device 6 are designed to transfer power over a distance of several centimetres, wherein the power transmitting device 5 and the power receiving device 6 are deigned to set up a wireless and/or cordless supply connection segment 10 between the power transmitting device 5 and the power receiving device 6. In addition, an aircraft is proposed that comprises the cabin interior arrangement 1 comprising the power transfer arrangement 2 for supplying power to the terminal 4.

A cabin interior arrangement 1 for an aircraft is proposed that comprises a first cabin interior object and a second cabin interior object 3a, b, comprising a power transmitting device 5 for transmitting power from an aircraft electrical system 7, wherein the power transmitting device 5 is arranged on the first cabin interior object 3a, comprising a power receiving device 6 for receiving the power from the power transmitting device 5, wherein the power receiving device 6 is arranged on the second cabin interior object 3b, wherein the power transmitting device 5 and the power receiving device 6 are embodied as a power transfer arrangement 2 for supplying the power to a mobile terminal 4, wherein the power transmitting device 5 and the power receiving device 6 are designed to transfer power over a distance of several centimetres, wherein the power transmitting device 5 and the power receiving device 6 are deigned to set up a wireless and/or cordless supply connection segment 10 between the power transmitting device 5 and the power receiving device 6. In addition, an aircraft is proposed that comprises the cabin interior arrangement 1 comprising the power transfer arrangement 2 for supplying power to the terminal 4.

A system includes a solar power subsystem that receives power from one or more solar power arrays. A storage control subsystem is coupled to the solar power subsystem to charge a battery from the power received by the solar power subsystem. A grid power control subsystem having an AC to DC converter receives power from a power grid and provides DC voltage to the storage control subsystem. A balance of system control system controls the amount of power received from the power grid as a function of a load, battery charge and received power by the solar power subsystem. The solar array and battery may be sized to provide sufficient power under normal operating conditions, with power being drawn from the grid during abnormal operation conditions.

A system includes a solar power subsystem that receives power from one or more solar power arrays. A storage control subsystem is coupled to the solar power subsystem to charge a battery from the power received by the solar power subsystem. A grid power control subsystem having an AC to DC converter receives power from a power grid and provides DC voltage to the storage control subsystem. A balance of system control system controls the amount of power received from the power grid as a function of a load, battery charge and received power by the solar power subsystem. The solar array and battery may be sized to provide sufficient power under normal operating conditions, with power being drawn from the grid during abnormal operation conditions.

A power management system 1 is provided with an HEMS 500 connected to an SOFC unit 100 and a load 400. The power management system comprises: a reception unit 510 that acquires power consumption of the load; and a transmission unit 520 that notifies the SOFC unit 100 of pseudo power consumption that is obtained by adding a predetermined offset to the power consumption acquired by the a reception unit 510. The SOFC unit 100 controls power output from the SOFC unit 100 to follow the pseudo power consumption.

A power management system 1 is provided with an HEMS 500 connected to an SOFC unit 100 and a load 400. The power management system comprises: a reception unit 510 that acquires power consumption of the load; and a transmission unit 520 that notifies the SOFC unit 100 of pseudo power consumption that is obtained by adding a predetermined offset to the power consumption acquired by the a reception unit 510. The SOFC unit 100 controls power output from the SOFC unit 100 to follow the pseudo power consumption.

According to some embodiments, there is provided a controller that performs communication with a plurality of power supply units each of which outputs electric power to a load. The controller includes a receiving unit, a control information generating unit and a transmitting unit. The receiving unit receives operation information from the power supply units by radio, the operation information being information on electric power output to the load from the power supply units, respectively. The control information generating unit generates control information to control the power supply units based on the operation information. The transmitting unit transmits the control information to the power supply units by radio.