scholarly journals Modelling and optimization of a local smart grid for an agro-industrial site

2013 ◽  
Vol 44 (2s) ◽  
Author(s):  
Enrico Fabrizio ◽  
Valeria Branciforti ◽  
Marco Filippi ◽  
Silvia Barbero ◽  
Giuseppe Tecco

A smart grid is defined where different elements are interconnected between them and with the public utility grid. The development of smart grids is considered a strategic goal at both national and international levels and has been funded by many research programs. Within the BEE (Building Energy Ecosystems) project, funded by the Piedmont Region under the European POR FESR 2007-13 scheme, the creation of an electricity smart grid at a local level in a small agroindustry was done. This industry is one of the so-called prosumer, that is both a producer and a consumer of energy. The energy production is done by means of solar photovoltaic and biomass. In this local smart grid, the elements were subdivided in two main groups: loads (process machineries in the case study) and generators (PV and biomass in the case study). The loads may be further subdivided into permanent loads, mandatory loads and shiftable loads. The objective of the smart grid is the minimization of the exchanges between the local grid and the public utility grid. Even though no financial savings occur, this is important for the community grid. The problem is therefore to find the conditions that let the net exported energy going to zero at each time step, so arriving close to a self-sufficient system by modifying the shiftable loads. In a first phase of the study, the consumers were studied and, according to some characteristics of the machineries employed and the production requirements, grouped into production lines that can or not be switched off for intervals of time in order to compensate the smart grid fluctuations. The smart grid balancing may be done on an instantaneous basis, or in a predictive way considering the future weather forecasts and the future production requirements. The demo site was equipped with measurement instrumentation, data acquisition tools and a user interface that may be used to visualize all the quantities that are measured but also to perform the actions suggested by the optimization strategy (start/stop machineries, organization of production, etc).

2021 ◽  
Vol 63 E ◽  
pp. 128-150
Author(s):  
Bianca RADU

The goal of this article is to analyze the level of citizens’ trust in different public institutions during the second wave of COVID-19 pandemic, and the influence of citizens’ trust on their compliance with the measures adopted to prevent the spread of the virus. The research was conducted between November and December 2020 on a sample of 700 residents of Metropolitan Area of Cluj, Romania. During the time of data collection, Romania registered the largest number of daily COVID-19 cases, therefore, citizens’ compliance with preventive measures was crucial to contain the spread of the virus. Citizens reported high levels of compliance with preventive measures. However, even though people were recommended to avoid meetings with relatives and friends, and participation to private events with large number of people, respondents reported that did not fully comply with social distancing requirements. Citizens have highest level of trust in the public institutions at local level, medical institutions and County Committees for Emergency Situations. The research found that trust in public institutions influences the compliance with preventive measures; however, the influence is weak and the trust in different institutions influences differently policy compliance.


Author(s):  
Velamala Ranga Rao

The objective of this chapter is 1) to understand multi-channel architecture, integration, and management; 2) to develop a framework for citizen relationship and grievance management system for a single view; 3) as a case study, to propose framework applied to find what types of channels are providing to the citizens get access to the public services at National, State, and Local level in India; 4) as a case study, to find out challenges and issues with implementation of multi-channel services delivery. The key findings of the case study are: 1) There is no declining in providing traditional channels after introducing modern channels. 2) The departments are offering mixed channels. 3) Usage of mobile-based applications, social media, and wi-fi are in pilot basis or at initial stage. 4) Multi-channel integration and management is not yet initiated. 5) Electricity and network coverage are main issues in implementation of modern channels. However, such initiatives have some issues and challenges to the developing countries like India.


Author(s):  
Dongming Fan ◽  
Yi Ren ◽  
Qiang Feng

The smart grid is a new paradigm that enables highly efficient energy production, transport, and consumption along the whole chain from the source to the user. The smart grid is the combination of classical power grid with emerging communication and information technologies. IoT-based smart grid will be one of the largest instantiations of the IoT in the future. The effectiveness of IoT-based smart grid is mainly reflected in observability, real-time analysis, decision-making, and self-healing. A proper effectiveness modeling approach should maintain the reliability and maintainability of IoT-based smart grids. In this chapter, a multi-agent-based approach is proposed to model the architecture of IoT-based smart grids. Based on the agent framework, certain common types of agents are provided to describe the operation and restoration process of smart grids. A case study is demonstrated to model an IoT-based smart grid with restoration, and the interactive process with agents is proposed simultaneously.


Author(s):  
Iliopoulos Nikolaos ◽  
◽  
Onuki Motoharu ◽  
Nistor Ioan ◽  
Esteban Miguel

In recent years, smart grids have attracted considerable attention. However, despite the promising potential of the technologies encompassed within such systems, their adoption has been slow, geographically varied, and in the context of residential demand response, often subject to public scrutiny. The heterogeneous evolution of the smart grid is not only the product of technological limitations but is additionally sensitive to socio-political considerations prevalent at the national or provincial level. Through expert interviews that were conducted in Ontario, Canada, this study provides insights into which smart grid factors are considered as most important for its development, and also what are the drivers, inhibitors, benefits, and drawbacks that a smart grid provides and / or entails, placing particular emphasis on residential demand response programs. The constructs scrutinized were adapted from previous studies, and the information collected was analyzed following the procedure of the Grounded Delphi Method. The findings indicate that a consensus was reached, in that smart grids pave the way for increased demand flexibility and loss reductions, though these are contingent on measures being implemented regarding the creation of investment opportunities, engagement of consumers, and ensuring the security of private data. Relevant policy implications and research recommendations are also explored.


The proposed smart grid infrastructure aims to make use of the existing public networks such as internet for data communication between consumer premises to the public power utility network. The smart-grid adopts smart-meters which basically collect vast amount of data to provide a holistic view of the connected load behavior and preferences pattern related to power and water consumption. The smart-grids provide benefits to the utilities and consumers alike. For utilities the benefits are real time data collection, ease of power management, and reduced personnel requirement. The benefits for the users on the other hand include availability of real time usage data, providing information on ways to minimize power consumption, monetary savings and so on. Since, the smart-grid uses existing public networks the utilities do not have the burden of installing any new infrastructure (except for installing the smart-meters), thus an added advantage. But, the downside of using the public network is susceptibility to a variety of network attacks, if not guarded well against. This paper talks about the various network security vulnerabilities that exist and the measures to patch the same before employing in the smart grid networks.


2015 ◽  
Vol 7 (2) ◽  
pp. 43-67
Author(s):  
Velamala Ranga Rao

Citizens are demanding greater access to interaction with government through their preferred channels or devices. The private sector uses different channels for their services, citizens except same level of services from the public sector. Therefore public sector needs to focus on creating multiple delivery channels (Traditional such as face to face, Telephone and Modern channels such as Website, E-mail, SMS), so that citizens can have ‘channels of choice', depending on specific needs, demands and preferences in order to increase citizens' participation and satisfaction. For this reason, the paper's purpose is 1) To understand multi-channel architecture, Integration, Management and its Strengths & Weakness 2) To develop a frame work for Citizen Relationship and Grievance Management System (CiR&GMS) for a single view 3) By applying proposed framework, To identify what types of channels are providing to access public services at National, State and Local level governments in India as a case study 4) To find out challenges and issues in implementation of multi-channel service delivery. The key findings of the case study are: a) There is no declining in providing traditional channels after introducing modern channels b) Many departments are offering mixed channels c) Usage of Mobile/SMS, Social media and Wi-Fi hotspots based channels are in initial stage d) t-Government channel is not yet initiated in any department e) Multi-channel integration and management is not yet initiated by many departments, these departments are managed channels as separate silos. The proposed framework may provide some guidance to the decision and policy makers in the public sector. However, such initiatives have many challenges to the developing countries like India.


2021 ◽  
pp. 203-214
Author(s):  
Tarek Fouani

Public spaces were first introduced into the Arab world through colonial authorities in a vision to “modernise” what was seen as “oriental cities”, since the 19th century until today. However, this process was brought under severe political, social, cultural, and economic circumstances. In the due date, the imported western models of public spaces were superimposed on the existing fabric, dismissing any of those components, which left public spaces to their tragic fate in the Arab cities. In that context, they were also snatched from their democratic and civic nature under the dictator regimes. The paper will be divided into five sections, starting with a look at the historical evolution of public spaces under colonisation, then it will take Beirut, Lebanon as a case study; a city that was torn by war and patched by western ideologies following the m­odernist movement. This will take a critical approach by looking at several players in the process of implementation of public spaces in Beirut. One of these being Solidere and its reconstruction plans of the city centre of Beirut after the civil war (1975-1990), which was heavily influenced by the western models of public spaces. In the third section, a comparative study between Piazza del Duomo in Italy and Martyrs’ Square in Lebanon will set a wider understanding of the product of this evolution. Eventually, the paper will analyse the impact of the Lebanese revolution (2019) on reclaiming the public spaces for the people, similar to other revolutions in the Arab world that date back to 2011, through examples like “The Egg”, Samir Kassir Garden and Martyr’s Square. By the hands of the revolutions, the people were able to domesticate what did not reflect their identity, culture or needs, and transform them into inclusive spaces for everyone from all races, classes and backgrounds as an opportunity to set a collective vision for the future. By that, a look and a recommendation for the future of the public spaces in the Arab world, especially Beirut, will take place through a concluding section.


2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Laurence De Clippele ◽  
Madlaina Michelotti ◽  
Charlotte R. Findlay ◽  
Amy Cartwright ◽  
Qing Fang ◽  
...  

To increase awareness of the current challenges facing the marine environment, the Future of Our Seas (FOOS) project brought together the expertise of scientists, public engagement experts and creatives to train and support a group of marine scientists in effective science communication and innovative public engagement. This case study aims to inspire scientists and artists to use the FOOS approach in training, activity design and development support (hereafter called the ‘FOOS programme’) to collaboratively deliver novel and creative engagement activities. The authors reflect on the experiences of the marine scientists: (1) attending the FOOS communication and engagement training; (2) creating and delivering public engagement activities; (3) understanding our audience; and (4) collaborating with artists. The authors also share what the artists and audiences learned from participating in the FOOS public engagement activities. These different perspectives provide new insights for the field with respect to designing collaborative training which maximizes the impact of the training on participants, creative collaborators and the public. Long-term benefits of taking part in the FOOS programme, such as initiating future collaborative engagement activities and positively impacting the scientists’ research processes, are also highlighted.


2020 ◽  
Vol 18 (4) ◽  
pp. 1023-1051
Author(s):  
Stefan Komazec ◽  
Jovan Krivokapić ◽  
Ivan Todorović

The aim of this paper has two directions. The first one is our attempt to define new method and procedure for estimating surplus of employees in the public sector, as one of the tools for public sector control. The second direction is the analysis of the public sector at the local level in Serbia, where overstaffing in public utility companies, founded and owned by Local Self-Government Units in Serbia, was analyzed using specific methods. The conclusions have been made on the basis of the restructuring projects carried out in over 20 public utility companies, which included over 20,000 employees.


European View ◽  
2019 ◽  
Vol 18 (2) ◽  
pp. 203-209
Author(s):  
Jonáš Syrovátka

There has been much heated discussion on the possible influence of disinformation campaigns on the 2019 European elections—including those campaigns launched by outside actors (namely the Russian Federation). This is not surprising considering previous election experiences not only in Western states, but globally. As far as we know, the 2019 European elections were fortunately not targeted by a large and coordinated disinformation campaign. Given the significant attention paid to the 2019 European elections by the public, researchers and policymakers, they present an interesting case study that might help us to learn not only how to tackle the issue of disinformation, but also how to understand and analyse it in the future.


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