Smart grid

About: Smart grid is a research topic. Over the lifetime, 37536 publications have been published within this topic receiving 627844 citations. The topic is also known as: intelligent grid.

Survey on Smart Grid Technology

Abstract: In this paper the connotation of smart grid is expounded, the present research status of smart grid home and abroad as well as the practical significance of developing smart grid in China are summarized. As a reference for relative researchers, this paper analyzes the conditions to develop smart grid in China, and points out the key technological problems to be solved for the development of smart grid in the fields of power network topology, communication system, metering infrastructure, demand side management, intelligent dispatching, power electronic equipments, distributed generation integration etc..

Survey of smart grid concepts, architectures, and technological demonstrations worldwide

Abstract: This paper describes various smart grid concepts, architectures, and details of associated technological demonstrations implemented worldwide. The survey is based on initiatives taken by EU and IEA (e.g. ETP, EEGI, EERA and IEA DSM) and description of projects conducted in Europe and US (e.g. FENIX, ADDRESS, EU-DEEP, ADINE, GridWise and SEESGEN-ICT). The report presents drivers, visions and roadmaps to develop smart grids worldwide including China and India. The survey encompasses various smart grid concepts, i.e. development of virtual power plant, active demand in consumer networks, DER aggregation business, active distribution network, and ICT applications to develop intelligent future grids. The comparison is carried out on the basis of commercial, technological, and regulatory aspects. In addition, the existing features of smart grid technology and challenges faced to implement it in Finnish environment are addressed. As a matter of fact, the implementation of smart grid is consisting of more than any one technology, therefore, this transition will not be so easy. In the end, a fully realized smart grid will be beneficial to all the stakeholders. Smart grid will be an outcome of an evolutionary development of the existing electricity networks towards an optimized and sustainable energy system.

Smart Grid Technologies for Autonomous Operation and Control

Abstract: This paper presents a new smart grid infrastructure for active distribution systems that will allow continuous and accurate monitoring of distribution system operations and customer utilization of electric power. The infrastructure allows a complete array of applications. The paper discusses four specific applications: a) protection against downed conductors; b) load levelization; c) loss minimization; and d) reliability enhancement.

Electric Vehicle Aggregator/System Operator Coordination for Charging Scheduling and Services Procurement

Abstract: In response to the need for the decarbonization of the transport sector, it is expected that large fleets of electric vehicles (EVs) will constitute an important share of the electricity demand. This evolution is likely to be accompanied by a parallel evolution of the electricity supply business with the deployment of smart grid technologies. As a consequence, it is expected that demand will feature higher potential for communication and control, which will enable its active participation in the daily operational planning of power systems. In particular, EVs being equipped with a battery can both defer their demand or inject electricity back into the system. However, to achieve volumes that can have an impact on the system, these demands need to be aggregated and operated as an ensemble. This paper proposes the necessary adaptations to include the input of EV aggregation to electricity markets. This permits the scheduling of EV charging and services in coordination with the system operator thus enhancing the power system's efficiency and security while reducing its environmental impact. Results show that the EVs penetration levels that the system would be able to absorb without requiring expansion of the supply side, are significantly increased when coordination over their charging schedule is performed.

An Optimal Energy Storage Control Strategy for Grid-connected Microgrids

Abstract: This paper presents an online optimal energy/power control method for the operation of energy storage in grid-connected electricity microgrids. The approach is based on a mixed-integer-linear-program optimization formulated over a rolling horizon window, considering predicted future electricity usage and renewable energy generation. Performance objectives include electricity usage cost, battery operation costs, and utility oriented goals related to the peak demand and load smoothing. A robust counterpart formulation of the optimization problem is also proposed to handle uncertainty in energy demand/generation prediction in a computationally efficient way. Further reduction in the computations is achieved by employing variable time steps and relaxing binary constraints. A series of simulations demonstrate the effectiveness of various features of the proposed energy/power management methodology in different scenarios.