Device and method for cooperation control of EMS and DMS

A method for cooperative control of an Energy Management System (EMS) and a Distribution Management System (DMS), comprising:

• receiving, by an input device, EMS information and DMS information;
• calculating, by a controller, an Area Q Index (AQI) based on simplifying a target local system to a single equivalent bus bar based on the target system information included in the EMS information, connecting a virtual power generator to the equivalent bus bar, and performing flow calculation in each case while changing output of reactive power within a preset range;
• determining, by the controller, whether to switch the DMS to reactive power cooperative control, based on the calculated AQI and a required local reactive power reserve (Qreq) included in the received EMS information;
• transmitting, by the controller, a cooperative control mode switching control signal if it is determined to switch the DMS to reactive power cooperative control, thus enabling the DMS to switch a mode thereof to a reactive power cooperative control mode;
• determining, by the controller, a suppliable reactive power amount based on the required local reactive power reserve (Qreq) included in the EMS information and a suppliable reactive power range included in the DMS information;
• and
• controlling, by the controller, the DMS so that reactive power corresponding to the determined suppliable reactive power amount is supplied to an upper layer,
• wherein determining whether to switch to reactive power cooperative control comprises, determining, by the controller, to switch to reactive power cooperative control when the calculated AQI is less than a reactive power control reference value (Qref).