US 8,527,110 B2 · Charge/discharge control device and power generation system

Abstract

A charge/discharge control device capable of increasing the lifetime of a storage portion while suppressing effects of fluctuation in power generated by a power generator on a power grid is provided. This charge/discharge control device is so formed as to start charge/discharge control of the storage portion if an amount of change in power detected by a power detection portion detecting power passing through a prescribed portion of a line between the power generator and the power grid is at least a prescribed amount of change when the detected power changes from first power to second power while the detected power does not return to power in the vicinity of the first power from the second power within a first period from a time point when the detected power changes from the first power to the second power.

Claims20

Dependent claims

A charge/discharge control device linked to a power grid, employed in a power generation system comprising a power generator generating power with natural energy and a storage portion capable of storing power, and controlling charge/discharge of said storage portion,

so formed as to start charge/discharge control of said storage portion if an amount of change in power detected by a power detection portion detecting power passing through a prescribed portion of a line between said power generator and said power grid is at least a prescribed amount of change when detected said power changes from first power to second power while said detected power does not return to power in a vicinity of the first power from said second power within a first period from a time point when said detected power changes from said first power to said second power.

A power generation system comprising:

a power generator linked to a power grid, generating power with natural energy;
a storage portion capable of storing power;
a power detection portion detecting power passing through a prescribed portion of a line between said power generator and said power grid;
and
a controller controlling charge/discharge of said storage portion, wherein
said controller is so formed as to start charge/discharge control of said storage portion if an amount of change in power detected by said power detection portion is at least a prescribed amount of change when detected said power changes from first power to second power while said detected power does not return to power in a vicinity of said first power from said second power within a first period from a time point when said detected power changes from said first power to said second power.

3 more elements

Dependencies are inferred from the claim text.

Charge/discharge control device and power generation system

Life of this patent

Charge/discharge control device and power generation system

Life of this patent

Abstract

Claims20