Patent ID: 11929612
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  G  Y | IPC B  G  H

Claim 0:
1. A server that manages electric power of a first power grid, the first power grid being configured to be connected to and disconnected from a second power grid, the server being configured to:
manage a plurality of power adjustment resources electrically connectable to the first power grid; and
switch the first power grid from an isolated operation to a grid-connected operation, the first power grid being interconnected with the second power grid in the grid-connected operation,
the server being configured to, in switching the first power grid from the isolated operation to the grid-connected operation,
determine a master among master candidates including the plurality of power adjustment resources based on a first parameter, the first parameter including a distance from a grid-connection point to the power adjustment resource, the grid-connection point being a point of connection between the first power grid and the second power grid,
designate as slaves, all of the master candidates not selected as the master, and
allow the first power grid to be connected to the second power grid after master-slave control by means of the master and the slaves such that electric power of the first power grid is in synchronization with electric power of the second power grid,

the server being configured to, in switching the first power grid from the grid-connected operation to the isolated operation,
determine a master among master candidates including the plurality of power adjustment resources based on a second parameter different from the first parameter, the second parameter including capacity of the power adjustment resource,
designate as slaves, all of the master candidates not selected as the master, and
allow the first power grid to be disconnected from the second power grid after selection of the master and the slaves, and
the server being configured to control the master and the slaves to stabilize electric power of the first power grid during the isolated operation of the first power grid.