Patent ID: 11916394
Assignee: HITACHI, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A system stabilization support method in a system supporting operation of a power system connecting a load and at least one of a first power source including a thermal power generator generating electricity using at least thermal power as power generation energy and a second power source including a renewable energy apparatus generating electricity with renewable energy, the method comprising:
an operation limit value management step of managing an operation limit value related to power flow power of system equipment; and
a determination step of calculating a power flow state for each set time of future of the power system based on load dispatching information including a power generation plan value of the first power source, a predicted value of output of the second power source, and a predicted value of power demand in the power system and determining whether or not stable is each calculated power flow state by comparing each calculated power flow state with the operation limit value, wherein
in the determination step, first output power of the first power source defined by the power generation plan value of the first power source is sequentially changed and each of the power flow states is calculated based on power including the changed first output power and the predicted value of the output of the second power source, and
in the operation limit value management step, on condition that a positive determination result is obtained in the determination step, the operation limit value at each set time of the future is managed as a sum of the first output power changed in the determination step and the predicted value of the output of the second power source added to the changed first output power.