Family of energy management system for smart grid

Energy management system (EMS) utilizes information flow to control power flow in order to balancing and optimizing the power flow every moment and place. Conventionally, the EMS is centralized one. However the architecture of future EMS is distributed & autonomous, interactive & coordinated. A new concept and architecture of future EMS for smart girds, i.e. EMS family, are proposed. Some new members of EMS family are introduced for autonomous and fast energy management of smart grids, for example, substation EMS, wind farm EMS and electric vehicle (EV) EMS. Interaction among EMS family members is introduced to do coordinated control in order to accumulating large-scale renewable energy as much as possible and to enhance entire gird security, which forms an EMS family network, for example, interaction between transmission and distribution grids, interaction between substation and control center, interaction between wind and EV. Implementation of demonstrative applications of such an EMS family will be carried out in several power grids in China in the near future.