Air-conditioning control system and method

An air-conditioning control system for performing fluctuating air-conditioning control for cyclically repeating an operation in which a plurality of rotation groups enter an energy saving mode in turn, the air-conditioning control system comprising:

• a hardware storage device that stores, in advance, information about a plurality of air-conditioning apparatuses, which are rotation group setting targets, an attribute of each of the air-conditioning apparatuses, a group setting rule for reducing, between the rotation groups, a difference in total power consumption of air-conditioning apparatuses having an identical attribute, and grouping information indicating the rotation groups to which the air-conditioning apparatuses belong;
• first processing circuitry configured to
• obtain information about power consumption values of the air-conditioning apparatuses for which the information is stored in the hardware storage device, and
• determine rotation groups to which the air-conditioning apparatuses belong in accordance with the power consumption values of the air-conditioning apparatuses obtained by the first processing circuitry and the group setting rule;
• and
• a control device including second processing circuitry is configured to give instructions to the air-conditioning apparatuses for cyclically repeating an operation in which the plurality of rotation groups enter the energy saving mode in turn in accordance with the stored grouping information, wherein
• the group setting rule used by the first processing circuitry is a rule in which a process of comparing total power consumption values of the rotation groups, each of the total power consumption values of the rotation groups being a total power consumption value of air-conditioning apparatuses classified into each of the rotation groups, with each other for each attribute and classifying an air-conditioning apparatus into a rotation group having the smallest total power consumption value is performed for each attribute until rotation groups of all of the air-conditioning apparatuses that are grouping targets are determined.