自律协同的智能电网能量管理系统家族:概念、体系架构和示例

Autonomous-Synergetic Energy Management System Family for Smart Grids: Concept,Architecture and Cases

能量管理系统(EMS)通过信息流调控能量流,保障电网运行的安全高效,被公认为电网运行的"大脑"。随着智能电网的快速发展,传统集中式EMS已难以满足海量信息处理和快速控制决策的需要,为此提出了自律协同的智能电网EMS家族的概念和分布式架构,涵盖了智能电网源、网、荷三大环节的各部分。家族成员内部实现自律,家族成员之间实现协同。分析了家族成员的共性和个性,介绍了若干EMS家族新成员,例如:风电场EMS、变电站EMS和电动车集群EMS。EMS家族成员之间通过互联协调,形成面向整个电力系统的源—网—荷协同的EMS家族网络,支撑整个智能电网的安全高效运行。介绍了若干EMS家族成员协同的示例,如输—配协同、站—中心协同和风—车协同。

Energy management system (EMS),known as the brain of power grid,utilizes information flow to control energy flow so as to keep power grid operation efficient and secure.Conventionally,the EMS is a centralized one with both information collecting and decision-making centralized.This architecture is facing a serious challenge in mass information collecting and faster decision,especially in smart grid environment.A new concept of distributed autonomy and centralized synergy is proposed and the EMS family covering all sections of smart grids (e.g.source,grid and demand) is concretized. Both commonness and individuality of these EMS family members are discussed.Several new members of EMS family including wind farm EMS,substation EMS and electric vehicle (EV) aggregator EMS are presented,to demonstrate their autonomous characteristics.Interactions among EMS family members are introduced to coordinate the members so as to implement source-grid-demand synergy to form an EMS family network.Several examples of interaction among the EMS family,such as interactions between transmission and distribution,between substations and control center,and between wind farm and EV aggregator,are introduced.