Transmission Characteristics of Low-Voltage Distribution Networks in China Under the Smart Grids Environment

Zhai, Mingyue

doi:10.1109/tpwrd.2010.2067228

Cited by 92 publications

(31 citation statements)

References 29 publications

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“…PLC has been the first choice for communication with the electricity meter due to the direct connection with the meter [20] and successful implementations of AMI in urban areas where other solutions struggle to meet the needs of utilities. PLC systems based on the LV distribution network have been one of the research topics for smart grid applications in China [22]. In a typical PLC network, smart meters are connected to the data concentrator through power lines and data is transferred to the data center via cellular network technologies.…”

Section: Power Line Communicationmentioning

confidence: 99%

Smart Grid Technologies: Communication Technologies and Standards

Güngör

Sahin

Koçak

et al. 2011

IEEE Trans. Ind. Inf.

2,229

773

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Abstract-For a hundred years, there has been no change in the basic structure of the electrical power grid. Experiences have shown that the hierarchical, centrally-controlled grid of the twentieth century is ill-suited to the needs of the twenty-first. To address the challenges of the existing power grid, the new concept of smart grid has emerged. The smart grid can be considered as a modern electric power grid infrastructure for enhanced efficiency and reliability through automated control, high power converters, modern communications infrastructure, sensing and metering technologies, and modern energy management techniques based on the optimization of demand, energy and network availability, and so on. While current power systems are based on a solid information and communication infrastructure, the new smart grid needs a different and much more complex one, as its dimension is much larger. This paper addresses critical issues on smart grid technologies primarily in terms of information and communication technology (ICT) issues and opportunities. The main objective of this paper is to provide a contemporary look at the current state of the art in smart grid communications as well as to discuss the still-open research issues in this field. It is expected that this paper will provide a better understanding of the technologies, potential advantages and research challenges of the smart grid and provoke interest among the research community to further explore this promising research area.

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Section: Power Line Communicationmentioning

confidence: 99%

Smart Grid Technologies: Communication Technologies and Standards

Güngör

Sahin

Koçak

et al. 2011

IEEE Trans. Ind. Inf.

2,229

773

View full text Add to dashboard Cite

show abstract

“…In order to provide communication services with different priorities under the smart grid environment, it is a must to design a PLC system with variable data rates supported, which means understanding of the PLC physical channel characteristics become vital. The testing results in [13] show that the main reason influencing the reliable communication of high-speed data on power line is the attenuation of the high-frequency signal, which exhibits more obviously in the branch of power line. It is almost impossible to use the frequency range from 10 to 20 MHz for the reliable communications from distribution transformer to end user, so it must be solved with the aid of means such as the repeater and the modulation schemes.…”

Section: A Power Line Communicationsmentioning

confidence: 99%

A Survey on Smart Grid Communication Infrastructures: Motivations, Requirements and Challenges

Yan

Qian

Sharif

et al. 2013

IEEE Commun. Surv. Tutorials

1,122

479

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Abstract-A communication infrastructure is an essential part to the success of the emerging smart grid. A scalable and pervasive communication infrastructure is crucial in both construction and operation of a smart grid. In this paper, we present the background and motivation of communication infrastructures in smart grid systems. We also summarize major requirements that smart grid communications must meet. From the experience of several industrial trials on smart grid with communication infrastructures, we expect that the traditional carbon fuel based power plants can cooperate with emerging distributed renewable energy such as wind, solar, etc, to reduce the carbon fuel consumption and consequent green house gas such as carbon dioxide emission. The consumers can minimize their expense on energy by adjusting their intelligent home appliance operations to avoid the peak hours and utilize the renewable energy instead. We further explore the challenges for a communication infrastructure as the part of a complex smart grid system. Since a smart grid system might have over millions of consumers and devices, the demand of its reliability and security is extremely critical. Through a communication infrastructure, a smart grid can improve power reliability and quality to eliminate electricity blackout. Security is a challenging issue since the on-going smart grid systems facing increasing vulnerabilities as more and more automation, remote monitoring/controlling and supervision entities are interconnected.Index Terms-Smart grid, communication infrastructure, intelligent network, interconnected power system, monitoring, sensing, cyber security I. BACKGROUND S MART grid is a term referring to the next generation power grid in which the electricity distribution and management is upgraded by incorporating advanced two-way communications and pervasive computing capabilities for improved control, efficiency, reliability and safety. A smart grid delivers electricity between suppliers and consumers using two-way digital technologies. It controls intelligent appliances at consumers' home or building to save energy, reduce cost and increase reliability, efficiency and transparency [1]. A smart grid is expected to be a modernization of the legacy electricity network. It provides monitoring, protecting and optimizing automatically to operation of the interconnected elements. It covers from traditional central generator and/or emerging renewal distributed generator through transmission network and distribution system to industrial consumer and/or home users with their thermostats, electric vehicles, intelligent appliances [2]. A smart grid is characterized by the bidirectional connection of electricity and information flows to create an automated, widely distributed delivery network. It incorporates the legacy electricity grid the benefits of modern communications to deliver real-time information and enable the near-instantaneous balance of supply and demand management [3]. Many technologies to be adopted by smart grid have alread...

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“…where DP M,i [k] and DP M,i [k?1] denote the power mismatch of agent i at iteration k and k?1, respectively; r Loss,i is the power transmission loss weighting, typically about 5%*7% of the total load [29], so the transmission loss is modeled by multiplying the load demand by a weighting. It is worth noting that, to meet the stability condition in (9), the communication topology of the ADS must be strongly connected [21,22], and no agent can be isolated from the communication network, that is, at least one communication link must exist with its neighboring agents.…”

Section: Flowchart Of Proposed DCCmentioning

confidence: 99%

Fully distributed control to coordinate charging efficiencies for energy storage systems

Liu

Yuan³

et al. 2018

J. Mod. Power Syst. Clean Energy

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This study proposes a novel fully distributed coordination control (DCC) strategy to coordinate charging efficiencies of energy storage systems (ESSs). To realize this fully DCC strategy in an active distribution system (ADS) with high penetration of intermittent renewable generation, a two-layer consensus algorithm is proposed and applied. It collects global information in the first layer and achieves pinning-based DCC in the second layer. Basic objectives of the proposed DCC for ESSs are: À to coordinate the ESSs and improve efficiency using associated marginal charging costs (MCCs) in a fully distributed manner;`to reduce local power mismatch and power transmission losses;´to adapt to unintentional communication topology changes. The effectiveness and adaptability of the proposed DCC approach are both validated by simulation results.

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Transmission Characteristics of Low-Voltage Distribution Networks in China Under the Smart Grids Environment

Cited by 92 publications

References 29 publications

Smart Grid Technologies: Communication Technologies and Standards

Smart Grid Technologies: Communication Technologies and Standards

A Survey on Smart Grid Communication Infrastructures: Motivations, Requirements and Challenges

Fully distributed control to coordinate charging efficiencies for energy storage systems

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