scholarly journals Review of Distribution Network Phase Imbalance: Scale, Consequences, Solutions, and Future Research Direction

2019 ◽  
Author(s):  
Kang Ma ◽  
Lurui Fang ◽  
Wangwei Kong
Keyword(s):  
Distributed Generation ◽  
Electric Vehicles ◽  
Distribution Networks ◽  
Research Direction ◽  
Mass Scale ◽  
Future Research ◽  
Data Scarcity ◽  
Using Data ◽  
The Uk ◽  
Micro Grids

Phase imbalance is widespread in the distribution networks in the UK, continental Europe, US, China, and other countries. First, this paper reviews the mass scale of phase imbalance and its consequences. Three challenges arise from phase rebalancing: the scalability, data scarcity, and adaptability (towards changing imbalance over time) challenges. Solutions to address the challenges are: 1) using retrofit-able, maintenance-free, automatic solutions to overcome the scalability challenge; 2) using data analytics to overcome the data-scarcity challenge; and 3) using phase balancers or other online phase rebalancing solutions to overcome the adaptability challenge. This paper categorizes existing phase rebalancing solutions into three classes: 1) load/lateral re-phasing; 2) using phase balancers; 3) controlling energy storage, electric vehicles, distributed generation, and micro-grids for phase rebalancing. Their advantages and limitations are analyzed and ways to overcome the limitations are recommended. Finally, this paper suggests future research topics.<br>

Review of Distribution Network Phase Unbalance: Scale, Causes, Consequences, Solutions, and Future Research Direction

2020 ◽  
Author(s):  
Kang Ma ◽  
Lurui Fang ◽  
Wangwei Kong
Keyword(s):  
System Analysis ◽  
Distribution Networks ◽  
Research Direction ◽  
Mass Scale ◽  
Optimal Placement ◽  
Future Research ◽  
Data Scarcity ◽  
Three Phase ◽  
Using Data ◽  
The Uk

Phase unbalance is widespread in the distribution networks in the UK, continental Europe, US, China, and other countries. First, this paper reviews the mass scale of phase unbalance and its causes and consequences. Three challenges arise from phase rebalancing: the scalability, data scarcity, and adaptability (towards changing unbalance over time) challenges. Solutions to address the challenges are: 1) using retrofit-able, maintenance-free, automatic solutions to overcome the scalability challenge; 2) using data analytics to overcome the data-scarcity challenge; and 3) using phase balancers or other online phase rebalancing solutions to overcome the adaptability challenge. This paper categorizes existing phase rebalancing solutions into three classes: 1) load/lateral re-phasing; 2) using phase balancers; 3) controlling energy storage, electric vehicles, distributed generation, and micro-grids for phase rebalancing. Their advantages and limitations are analyzed and ways to overcome the limitations are recommended. Finally, this paper suggests future research topics: 1) long-term forecast of phase unbalance; 2) whole-system analysis of the unbalance-induced costs; 3) phase unbalance diagnosis for data-scarce LV networks; 4) techno-commercial solutions to exploit the flexibility from large three-phase customers for phase balancing; 5) the optimal placement of phase balancers; 6) the transition from single-phase customers to three-phase customers. <br>

scholarly journals Review of Distribution Network Phase Unbalance: Scale, Causes, Consequences, Solutions, and Future Research Direction

2020 ◽  
Author(s):  
Kang Ma ◽  
Lurui Fang ◽  
Wangwei Kong
Keyword(s):  
System Analysis ◽  
Distribution Networks ◽  
Research Direction ◽  
Mass Scale ◽  
Optimal Placement ◽  
Future Research ◽  
Data Scarcity ◽  
Three Phase ◽  
Using Data ◽  
The Uk

Phase unbalance is widespread in the distribution networks in the UK, continental Europe, US, China, and other countries. First, this paper reviews the mass scale of phase unbalance and its causes and consequences. Three challenges arise from phase rebalancing: the scalability, data scarcity, and adaptability (towards changing unbalance over time) challenges. Solutions to address the challenges are: 1) using retrofit-able, maintenance-free, automatic solutions to overcome the scalability challenge; 2) using data analytics to overcome the data-scarcity challenge; and 3) using phase balancers or other online phase rebalancing solutions to overcome the adaptability challenge. This paper categorizes existing phase rebalancing solutions into three classes: 1) load/lateral re-phasing; 2) using phase balancers; 3) controlling energy storage, electric vehicles, distributed generation, and micro-grids for phase rebalancing. Their advantages and limitations are analyzed and ways to overcome the limitations are recommended. Finally, this paper suggests future research topics: 1) long-term forecast of phase unbalance; 2) whole-system analysis of the unbalance-induced costs; 3) phase unbalance diagnosis for data-scarce LV networks; 4) techno-commercial solutions to exploit the flexibility from large three-phase customers for phase balancing; 5) the optimal placement of phase balancers; 6) the transition from single-phase customers to three-phase customers. <br>

scholarly journals Can Blockchain Strengthen the Energy Internet?

Network ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 95-115
Author(s):  
Charithri Yapa ◽  
Chamitha de Alwis ◽  
Madhusanka Liyanage
Keyword(s):  
Distributed Generation ◽  
Paradigm Shift ◽  
Distribution Networks ◽  
Future Research ◽  
Disruptive Technology ◽  
Electricity Distribution ◽  
Energy Internet ◽  
Energy Delivery ◽  
Electricity Grids

Emergence of the Energy Internet (EI) demands restructuring of traditional electricity grids to integrate heterogeneous energy sources, distribution network management with grid intelligence and big data management. This paradigm shift is considered to be a breakthrough in the energy industry towards facilitating autonomous and decentralized grid operations while maximizing the utilization of Distributed Generation (DG). Blockchain has been identified as a disruptive technology enabler for the realization of EI to facilitate reliable, self-operated energy delivery. In this paper, we highlight six key directions towards utilizing blockchain capabilities to realize the envisaged EI. We elaborate the challenges in each direction and highlight the role of blockchain in addressing them. Furthermore, we summarize the future research directive in achieving fully autonomous and decentralized electricity distribution networks, which will be known as Energy Internet.

Distribution Networks with Distributed Generation and Electric Vehicles

2021 ◽  
pp. 250-260
Author(s):  
Wilson Jhonatan Olmedo Carrillo ◽  
Andrés Santiago Cisneros-Barahona ◽  
María Isabel Uvidia Fassler ◽  
Gonzalo Nicolay Samaniego Erazo ◽  
Byron Andrés Casignia Vásconez
Keyword(s):  
Distributed Generation ◽  
Electric Vehicles ◽  
Distribution Networks

scholarly journals The Why of Adaptive Protections in Modern Electrical Networks

2019 ◽  
Vol 39 (2) ◽  
Author(s):  
Juan Martín Guardiola Montenegro ◽  
Eduardo Gómez Luna ◽  
Eduardo Marlés Sáenz ◽  
Jorge Armando De la Cruz Saavedra
Keyword(s):  
Renewable Energy ◽  
Distributed Generation ◽  
Renewable Resources ◽  
Harmonic Distortion ◽  
Distribution Networks ◽  
Electrical Networks ◽  
Dynamic Changes ◽  
Interconnected System ◽  
Electric System ◽  
Micro Grids

Electrical networks are evolving and taking on more challenges as the inclusion of renewable energy and distributed generation units increase, specially at distribution levels. Big trends of generating electricity with alternative and renewable resources has promoted the formation of distribution networks subsystems or micro grids, capable of supplying their own electric demand and to export energy to the interconnected system, if necessary. However, the effects of these generation units into the network and into the microgrid as well are many, as harmonic distortion, voltage flickers and especially in electrical protections.This paper provides an overview about implementation of renewable energy and distributed generation worldwide, as well as an introduction to microgrids concept and its main impacts and challenges into the electric systems. Finally, the main impacts of microgrid on protection equipments are presented at a distribution level, being adaptive protections one of the solutions to the dynamic changes of the electric system.

scholarly journals On the Determination of Meshed Distribution Networks Operational Points after Reinforcement

2019 ◽  
Vol 9 (17) ◽  
pp. 3501 ◽  
Author(s):  
Vasiliki Vita ◽  
Stavros Lazarou ◽  
Christos A. Christodoulou ◽  
George Seritan
Keyword(s):  
Monte Carlo Simulation ◽  
Distributed Generation ◽  
Electric Vehicles ◽  
Maximum Load ◽  
Distribution Networks ◽  
Network Robustness ◽  
Current Load ◽  
Objective Functions ◽  
Calculation Algorithm

This paper proposes a calculation algorithm that creates operational points and evaluates the performance of distribution lines after reinforcement. The operational points of the line are probabilistically determined using Monte Carlo simulation for several objective functions for a given line. It is assumed that minimum voltage at all nodes has to be balanced to the maximum load served under variable distributed generation production, and to the energy produced from the intermittent renewables. The calculated maximum load, which is higher than the current load, is expected to cover the expected needs for electric vehicles charging. Following the proposed operational patterns, it is possible to have always maximum line capacity. This method is able to offer several benefits. It facilitates of network planning and the estimation of network robustness. It can be used as a tool for network planners, operators and large users. It applies to any type of network including radial and meshed.

scholarly journals Facets extraction-based approach for query recommendation using data mining approach

2018 ◽  
Vol 7 (1) ◽  
pp. 121
Author(s):  
A. V. Zadgaonkar ◽  
A. J. Agrawal ◽  
S. Aote
Keyword(s):  
Search Engines ◽  
Text Processing ◽  
Research Direction ◽  
Relevant Information ◽  
Future Research ◽  
Search Results ◽  
Data Mining Approach ◽  
Lexical Resource ◽  
Query Recommendation ◽  
Using Data

Search engines are popularly utilized for extracting desired information from World Wide Web by users.  Efficiency of these search engines are dependent on how fast search results can be retrieved and whether these results reflects the desired info or not. For a particular query, vast amount of relevant information is scattered across the multiple web pages. Search engines generate multiple web links as a output. It has been a jigsaw puzzle for users to identify and select relevant links to extract further desired information. To address this issue, we are proposing an approach for Query Recommendation for getting relevant search results from web using facet mining techniques. Facets are the semantically related words for a query which defines its multiple aspects. We are extracting these aspects of a query from Wikipedia pages which is considered to be a trustworthy resource on the web. Our proposed system uses various text processing techniques to refine the results using lexical resource like WorldNet. In this paper we are discussing our approach and its implementation and results obtained. In the paper , Discussion on future research direction is included to conclude.

scholarly journals Review of the Charging Safety and Charging Safety Protection of Electric Vehicles

2021 ◽  
Vol 12 (4) ◽  
pp. 184
Author(s):  
Linru Jiang ◽  
Xiaohong Diao ◽  
Yuanxing Zhang ◽  
Jing Zhang ◽  
Taoyong Li
Keyword(s):  
Electric Vehicles ◽  
Research Priorities ◽  
Reference Value ◽  
Research Direction ◽  
Future Research ◽  
Surrounding Environment ◽  
Safety Research ◽  
Safety Protection ◽  
New Energy ◽  
Development And Utilization

With the continuous development of society and the economy and the popularization of the environmental protection concept, more and more people have begun to turn to electric vehicles. The application of electric vehicles can effectively avoid the damage caused by automobile fuel emissions to the surrounding environment and promote the development and utilization of new energy. However, the development of the electric vehicle industry has led to frequent accidents related to charging safety. In order to prevent accidents related to the charging safety of electric vehicles and ensure proper safety of passengers and people, the charging safety and charging safety protection methods of electric vehicles have become the research priorities for scholars. This paper reviewed the existing research results on the charging safety of electric vehicles, analyzed the influencing factors of the charging safety of electric vehicles, summarized the charging safety protection methods, and forecast the future research direction of charging safety, which has reference value and reference significance for the charging safety research of electric vehicles.

scholarly journals Mapping the Greek Wine Supply Chain: A Proposed Research Framework

Foods ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 2859
Author(s):  
Foivos Anastasiadis ◽  
Maria Alebaki
Keyword(s):  
Supply Chain ◽  
Value Chain ◽  
Research Direction ◽  
Wine Industry ◽  
Future Research ◽  
Complex Nature ◽  
Research Framework ◽  
Integrated Research ◽  
Chain Maps ◽  
Using Data

The wine industry involves both the production (i.e., from vine to wine) and consumption of wine (i.e., dining and tourism experiences). This results in a complicated system of intertwined product and services supply chains. Recent studies in the field suggest several key perspectives for future research, such as sustainability, resilience and circular economy. However, the complex nature of the sector which comprises numerous stakeholders and flows (i.e., products—services—information), entailing knotty interactions and interdependencies, makes any research direction questionable in terms of its effectiveness. Therefore, the objective of this study is to provide a tool for designing targeted future research in such multiple environments. We employed an end-to-end mapping approach using data from the Greek wine supply chain, identifying essential insights for a compelling research agenda. The key output is a set of three supply chain maps revealing the structure, processes and actors from all the main angles: basic production, value chain and stakeholders. A synthesis of these maps supports an overall understanding of the sector, unmasking any interaction and hidden information holdups. The study thus aims to offer an integrated research framework that highlights the leading priorities of the Greek wine industry.

scholarly journals Construction Planning and Operation of Battery Swapping Stations for Electric Vehicles: A Literature Review

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8202
Author(s):  
Yu Feng ◽  
Xiaochun Lu
Keyword(s):  
Electric Vehicles ◽  
Research Direction ◽  
Optimization Models ◽  
Future Research ◽  
Construction Planning ◽  
Related Literature ◽  
Power Failure ◽  
Capacity Calculation ◽  
Fast Power ◽  
Planning And Operation

The popularity of electric vehicles has been limited by factors such as range, long charging times and fast power failure in winter. In order to overcome these challenges, battery swapping stations (BSS) have been constructed and greatly promoted in recent years. In this paper, the related literature on electric vehicle service is reviewed and the co-occurrence of keywords is analyzed using CiteSpace. The literature is classified according to clustering results and recurring themes, such as the location of BSS, inventory decisions, charging strategies and BSS assignment. In each topic, typical optimization models and algorithms proposed in previous studies are summarized. Then, this paper gives a case about the business model and revenue capacity calculation of BSS. Finally, it points out the future research direction of battery swapping stations for electric vehicles.

Sign in / Sign up

Export Citation Format

Share Document