Power supply system, control device of power supply system, operation method of power supply system, and control method of power supply system

摘要

A power supply system according to the present invention includes a control device (110) which is configured such that if it is predicted that the sum of start-up power for a power generation system (101) and electric power consumed by an external electrical load (105) at start-up of the power generation system (101) and/or the sum of stopped-period power for the power generation system (101) and electric power consumed by the external electrical load (105) at stopping of power generation of the power generation system (101) exceed upper limit power, up to which an electric rate is kept to a relatively low unit price, and that the electric rate is to be changed to a relatively high unit price, then the control device (110) performs control of supplying electric power stored in an electrical storage unit (107) to at least one of the power generation system (101) and the external electrical load (105) in order to prevent the amount of electric power supplied from a power grid (104) from exceeding the upper limit power.

主权项

1. A power supply system comprising:
a power generation system; an electrical storage unit configured to supply electric power to the power generation system and an external electrical load; and a control device configured to perform at least one of first control and second control, the control device performing the first control if, at start-up of the power generation system, it is predicted that a sum of start-up power for the power generation system and electric power consumed by the external electrical load exceeds upper limit power, up to which an electric rate is kept to a relatively low unit price, and that the electric rate is to be changed to a relatively high unit price, the first control being control of supplying electric power stored in the electrical storage unit to at least one of the power generation system and the external electrical load in order to prevent electric power supplied from a power grid from exceeding the upper limit power, the control device performing the second control if, at stopping of power generation of the power generation system, it is predicted that a sum of stopped-period power for the power generation system and electric power consumed by the external electrical load exceeds the upper limit power, up to which the electric rate is kept to a relatively low unit price, and that the electric rate is to be changed to a relatively high unit price, the second control being control of supplying electric power stored in the electrical storage unit to at least one of the power generation system and the external electrical load in order to prevent electric power supplied from the power grid from exceeding the upper limit power.