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A modernized grid equipped with bidirectional power flow capability, inter-device communication, cyber and physical protection, autonomous fault detection, self-healing and integration of green energy resources to enhance energy efficiency, quality, reliability and system security is regarded as Smart Grid. Revitalizing the existing power system through a paradigm shift from a traditional power system...
This paper introduces a new transactive energy (TE) scheme to determine energy trading strategies among transactive market participants in a transactive environment. In our proposed approach, distribution systems operator (DSO) generates distribution locational marginal price (DLMP) for transactive nodes (TNs). Then, TNs calculate transactive incentive signal (TIS) and transactive feedback signal...
Distributed power system network is going to be complex, and it will require high-speed, reliable and secure communication systems for managing intermittent generation with coordination of centralised power generation, including load control. Cognitive Radio (CR) is highly favourable for providing communications in Smart Grid by using spectrum resources opportunistically. The IEEE 802.22 Wireless...
The current model of centralized electricity generation, transmission and distribution is under pressure to change for a variety of reasons; environmental concerns are driving a shift away from large coal-fired generation systems to increasing adoption of renewable energy sources, which tend to be distributed and not always available on demand, and hence requiring distributed storage support. Moreover,...
Smart grids are cyber-physical systems that integrate an information and communication technology (ICT) network with the existing power system infrastructure. As smart grids become more mature, the interdependency between the cyber and physical systems becomes stronger. Because of this, the traditional reliability assessment, power grid operations, and power system security assessment techniques,...
The goal of electric distribution design and planning is to meet the customer reliability requirement at the lowest investment cost. Smart grid (SG) investment has a potential to meeting these goals. However, the risk of investment of smart grid needs to be considered such as the decision of the investment area, suitability of automatic devices for the power interruption cause and installation position...
The paper considers the challenges which the modern energy systems control faces — introduction of renewable energy sources, rapidly changing loads, and energy markets liberalization. Some possible approaches for overcoming these challenges are outlined like introduction of thousands of actuating, sensing and controlling devices, smart sensor networks development, decentralized control systems implementation,...
In this paper a novel droop approach for power management in low voltage dc MicroGrids (MGs) based on a master-slave concept is presented. A virtual frequency is injected by a master unit, which is proportional to its output power. Other slave units determine their output power according to the corresponding frequency based droop characteristics. Unlike the dc voltage-droop methods, the proposed virtual...
For cyber-physical systems (CPSs), communications system reliability is an indispensable requirement to realize them in critical infrastructures. One of the important attributes of system reliability is availability. System availability is broadly defined as the proportion of time that the system will provide service. In some CPSs, such as smart grids, the units are distributed over large geographical...
Power interruptions cause losses, for consumers and for the utility, but it is necessary in order to make improvements in the power distribution system and also for protective devices operate when an outage occurs. Therefore, it is important that utilities perform the service for emergency occurrences as quickly as possible, reducing the time of the outage. Brazilian National Electric Energy Agency...
Smart grid is an enhancement of traditional electric grid which provides two way communication and information technologies and computational facilities for data storage across all sectors of electricity to achieve efficient, secure and reliable electric system. Reliability of nation's bulk power system can be improved by incorporating an interconnection wide real time monitoring system to provide...
A communication system for micro grids (MGs) is presented in this paper using NS2. It is assumed that each MG consists of one central controller and multiple distributed generation units with respective local controllers. The communication system is designed for transmitting and receiving data amongst these controllers and the end sensors or actuators. This communication system will prove useful with...
Smart distribution grid(SDG) is the development direction of modern power grid with self-healing, reliable, high quality, high efficiency, compatibility, interactive features. It is the research focus of the smart grid and ensuring reliable power and quality power supply. This paper covers the concept, significance, development situation at home and abroad. It also discovers many research problems...
This paper introduces the concept of intelligent distribution network, development of smart grid technology with meaning and background as well as domestic and foreign research and development status of Smart Distribution Grid. It focuses on the advanced smart distribution grid distribution automation, self-healing distribution network control technology, AMI technology, the impact of distributed...
In order to build a strong smart grid with Chinese characteristics, the smart distribution grid issue is studied. Some present questions hindering the futuristic development of electric power distribution are proposed. The definition of smart distribution grid is given. The detailed characteristics are analysed in the paper, several functional requirements are put forward, and the development in the...
This paper introduces the concept, characteristics, domestic and foreign development status of smart distribution grid. The key technologies of smart distribution grid are deeply discussed, including the micro grid, communications technology, Self-healing control technology, Advanced metering infrastructure(AMI) and advanced distribution automation(ADA), Combined with the current situation of urban...
Smart distribution grid(SDG)is the focus of the future smart grid construction, it will have a profound impact on the operation of power system protection and control. In this paper, the concept and characteristics of SDG are systematically introduced, then brief introduce SDG background, significance, as well as overseas and domestic research status. The key technologies of SDG are discussed, including...
This paper presents a multi-objective energy scheduling for the daily operation of a Smart Grid (SG) considering maximization of the minimum available reserve in addition to the cost minimization, to take into account the reliability requirements of critical and vulnerable loads. A Virtual Power Player (VPP) manages the day-ahead energy resource scheduling in the smart grid, considering Distributed...
In recent years, Microgrids (MGs), a widely acceptable smaller-scale energy infrastructure, are proved to be valuable in their resilience and reliability specially during extreme disasters that cause blackouts and major grid instabilities and being positioned to represent modulator building blocks for critical energy infrastructure in future sustainable smarter cities. In this paper, we propose a...
Due to the benefits of Smart Grid Technology and renewable energy systems, consumer demand for a controller design that allows effective integration of these two systems has been growing over the last few years. This article proposes a new controller designed with the objective of increasing efficiency and reliability of a consumer's renewable energy system. It describes the system model design and...
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