Smart Grids with Intelligent Periphery:An Architecture for the Energy Internet  

作　　者：Felix F.Wu Pravin P.Varaiya Ron S.Y.Hui 

机构地区：[1]Department of Electrical Engineering and Computer Sciences, University of California [2]Department of Electrical and Electronic Engineering, The University of Hong Kong

出　　处：《Engineering》2015年第4期436-446,共11页工程（英文）

基　　金：sponsored by National Key Basic Research Program of China (973 Program) (2012CB215102) for Wu;US National Science Foundation Award (1135872) for Varaiya;Hong Kong RGC Theme-based Research Project (T23-701/14-N) for Hui

摘　　要：A future smart grid must fulfill the vision of the Energy Internet in which millions of people produce their own energy from renewables in their homes, offices, and factories and share it with each other. Electric vehicles and local energy storage will be widely deployed. Internet technology will be utilized to transform the power grid into an energysharing inter-grid. To prepare for the future, a smart grid with intelligent periphery, or smart GRIP, is proposed. The building blocks of GRIP architecture are called clusters and include an energy-management system （EMS）-controlled transmission grid in the core and distribution grids, micro-grids, and smart buildings and homes on the periphery; all of which are hierarchically structured. The layered architecture of GRIP allows a seamless transition from the present to the future and plug-and-play interoperability. The basic functions of a cluster consist of （1） dispatch, （2） smoothing, and （3） mitigation. A risk-limiting dispatch methodology is presented; a new device, called the electric spring, is developed for smoothing out fluctuations in periphery clusters; and means to mitigate failures are discussed.A future smart grid must fulfi ll the vision of the Energy Internet in which millions of people produce their own energy from renewables in their homes, offi ces, and factories and share it with each other. Electric vehicles and local energy storage will be widely deployed. Internet technology will be utilized to transform the power grid into an energysharing inter-grid. To prepare for the future, a smart grid with intelligent periphery, or smart GRIP, is proposed. The building blocks of GRIP architecture are called clusters and include an energy-management system(EMS)-controlled transmission grid in the core and distribution grids, micro-grids, and smart buildings and homes on the periphery; all of which are hierarchically structured. The layered architecture of GRIP allows a seamless transition from the present to the future and plug-and-play interoperability. The basic functions of a cluster consist of ①dispatch, ② smoothing, and ③ mitigation. A risk-limiting dispatch methodology is presented; a new device, called the electric spring, is developed for smoothing out fl uctuations in periphery clusters; and means to mitigate failures are discussed.

关 键 词：smart grid future grid Energy Internet energy- management system integrating renewables power system operation power system control distribution automation systems demand-side management 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TM726[自动化与计算机技术—控制科学与工程]