Operation control system, operation control apparatus, and operation control method

An operation control system comprising:

• a storage that stores electric-power information;
• and
• a processor configured to determine, based on the electric-power information, a special-operation timing at which a special operation of a refrigerant cycle apparatus installed in at least one property or at least one area is to be executed,
• the electric-power information including electric-power supply demand adjustment request information related to an electric-power supply demand adjustment request from an outside to the property or the area,
• the electric-power supply demand adjustment request information including at least one of
• a negawatt request time period that includes at least one time period that is a target of the electric-power supply demand adjustment request with a trend toward suppressing electric-power consumption, and
• a posiwatt request time period that includes at least one time period that is a target of the electric-power supply demand adjustment request with a trend toward promoting electric-power consumption,
• the special operation including a heating-time oil return operation during a heating operation of the refrigerant cycle apparatus, and
• the processor being configured to determine at least one of
• the special-operation timing at which the heating-time oil return operation is to be executed in the negawatt request time period, and
• the special-operation timing at which the heating-time oil return operation is to be avoided in the posiwatt request time period,
• the processor being configured to control the refrigerant cycle apparatus to execute the special operation at the special-operation timing.