scholarly journals Reconfiguring energy flows: energy grid-lock and the role of regions in shaping electricity infrastructure networks

Author(s):  
Carla De Laurentis ◽  
Richard Cowell
2020 ◽  
Vol 26 (3) ◽  
pp. 14-19
Author(s):  
Laurențiu Bogdan Asalomia ◽  
Gheorghe Samoilescu

AbstractThe paper analyzes, starting from the Integrated Management System, the role of automation, the role of the officer and the role of the Energy Management System on board the ship. The implementation of an EnMS establishes the structure and discipline of identifying energy flows, implementing management actions and, finally, applying technical solutions, which significantly reduce energy costs, reduce non-productive time in production, and reduce emissions. of Greenhouse Gases in the environment. The steps to be highlighted in the realization of energy management are analyzed.


1992 ◽  
Vol 25 (11) ◽  
pp. 403-410 ◽  
Author(s):  
B. E. Rittmann

Microbiological detoxification of hazardous organic pollutants is highly promising, but its reliable implementation requires a sophisticated understanding of several different substrate types and how they interact. This paper carefully defines the substrate types and explains how their interactions affect the bacteria's electron and energy flows, information flow, and degradative activity. For example, primary substrates, which are essential for growth and maintenance of the bacteria, also interact with degradation of specific hazardous pollutants by being inducers, inhibitors, and direct or indirect cosubstrates. The target contaminants, which often are secondary substrates, also have the interactive roles of self-inhibitor, inhibitor of primary-substrate utilization, inducer, and a part of an aggregate primary substrate.


2018 ◽  
Vol 2 (1) ◽  
pp. 31 ◽  
Author(s):  
Norbert Fenzl

How order emerges from noise? How higher complexity arises from lower complexity? For what reason a certain number of open systems start interacting in a coherent way, producing new structures, building up cohesion and new structural boundaries? To answer these questions we need to precise the concepts we use to describe open and complex systems and the basic driving forces of self-organization.   We assume that self-organization processes are related to the flow and throughput of Energy and Matter and the production of system-specific Information. These two processes are intimately linked together: Energy and Material flows are the fundamental carriers of signs, which are processed by the internal structure of the system to produce system-specific structural Information (Is). So far, the present theoretical reflections are focused on the emergence of open systems and on the role of Energy Flows and Information in a self-organizing process. Based on the assumption that Energy, Mass and Information are intrinsically linked together and are fundamental aspects of the Universe, we discuss how they might be related to each other and how they are able to produce the emergence of new structures and systems. 


Author(s):  
Matthias G. Arend ◽  
Thomas Franke

Objective: The objective of the present research was to understand drivers’ interaction patterns with hybrid electric vehicles’ (HEV) eco-features (electric propulsion, regenerative braking, neutral mode) and their relationship to fuel efficiency and driver characteristics (technical system knowledge, eco-driving motivation). Background: Eco-driving (driving behaviors performed to achieve higher fuel efficiency) has the potential to reduce CO2 emissions caused by road vehicles. Eco-driving in HEVs is particularly challenging due to the systems’ dynamic energy flows. As a result, drivers are likely to show diverse eco-driving behaviors, depending on factors like knowledge and motivation. The eco-features represent an interface for the control of the systems’ energy flows. Method: A sample of 121 HEV drivers who had constantly logged their fuel consumption prior to the study participated in an online questionnaire. Results: Drivers’ interaction patterns with the eco-features were related to fuel efficiency. A common factor was identified in an exploratory factor analysis, characterizing the intensity of actively dealing with electric energy, which was also related to fuel efficiency. Driver characteristics were not related to this factor, yet they were significant predictors of fuel efficiency. Conclusion: From the perspective of user–energy interaction, the relationship of the aggregated factor to fuel efficiency emphasizes the central role of drivers’ perception of and interaction with energy conversions in determining HEV eco-driving success. Application: To arrive at an in-depth understanding of drivers’ eco-driving behaviors that can guide interface design, authors of future research should be concerned with the psychological processes that underlie drivers’ interaction patterns with eco-features.


Author(s):  
Ramesh Pandey

Growing populations coupled with rapid industrial growth is driving increased energy consump-tion in the developing world. Energy grids in developing countries have historically struggled tomeet requirements and will continue to do so if strategy and pace of grid development is unableto keep up with increasing demands. As growing populations continue to seek access to energysources it is important that these eorts be sustainable not only economically and socially but alsoenvironmentally. This study attempts to review ongoing eorts in some of these countries aimedat enhancing their renewable source generation capacity, its integration into the national grid andenergy storage capability addition required to support integration and grid reliability.


GANEC SWARA ◽  
2019 ◽  
Vol 13 (2) ◽  
pp. 357
Author(s):  
SANTIAN SANTIAN ◽  
PUTU KARISMAWAN ◽  
BAIQ SARIPTA W.M

   This study is entitled "Infrastructure Factors in the Economic Development of the City of Mataram". The purpose of this study is to look at the role of road infrastructure, electricity infrastructure and education infrastructure, both partially and simultaneously in the economic development of the City of Mataram. Infrastructure indicators in this study include roads, electricity and education. Gross Regional Domestic Product (GRDP) on the basis of being used as an economic indicator. Infrastructure data and GRDP analyzed cover the period 2001-2016.   The results of the analysis show that simultaneous road, electricity and education infrastructure play a significant role in the economic development of the city of Mataram. partially road infrastructure and electricity infrastructure play a significant role in the economic development of the City of Mataram. 


Author(s):  
Elodie Chevallot-Beroux ◽  
Jan Gorges ◽  
Joseph Moran

<p><b>Life’s catabolic processes capture chemical energy from the oxidative breakdown of metabolites. In the catabolic pathways at the core of biochemistry, the oxidation of </b>α-<b>ketoacids or aldehydes is coupled to the synthesis of thioesters, whose energy-releasing hydrolysis is in turn coupled to the production of adenosine 5’-triphosphate (ATP). How these processes became linked before life emerged, and thus how the framework for modern bioenergetics was established, is a major problem for understanding the origins of biochemistry. The structure of biochemical networks suggests that the intermediary role of thioesters in biological energy flows, and their central role in biosynthesis, is a consequence of their entry into metabolism at the earliest stage of biochemical evolution. However, how thioesters could have become embedded within a metabolic network before the advent of enzymes remains unclear. Here we demonstrate non-enzymatic oxidant- or light-driven thioester synthesis from biological </b>α-<b>ketoacids and show it can be integrated within an iron-promoted metabolism-like reaction network. The thioesters obtained are those predicted to be pivotal in computational reconstructions of primitive biochemical networks (acetyl, malonyl, malyl and succinyl thioesters), demonstrating a rare convergence between top-down and bottom-up approaches to the origins of metabolism. The diversity and simplicity of conditions that form thioesters from core metabolites suggests the energetic link between thioester synthesis and catabolism was in place at the earliest stage of prebiotic chemistry, constraining the path for the later evolution of life’s phosphorus-based energy currencies.</b></p>


2014 ◽  
pp. 260-281
Author(s):  
Giovanna Dondossola ◽  
Fabrizio Garrone ◽  
Judit Szanto

The objective of the chapter is to present the role of cyber security experiments within a methodological approach for the evaluation of cyber risks in grid control systems. As a starting point, a cyber-power risk index has been defined to support the identification of relevant risk factors across network attack models. Instances of attack models have been then experimented on an ICT architecture implementing grid operation scenarios with the double aim of evaluating the attacks' effects by means of communication performance measures and of tuning the configuration of security mechanisms. The chapter discusses the results of a variety of attack experiments and their role in the calculation of the risk index.


2008 ◽  
pp. 78-90
Author(s):  
M. Klinova

The study focuses on the contemporary features in the development of infrastructure networks. This field becomes attractive for public-private partnership (PPP), including those with foreign capital participation. A new form of the state and TNC cooperation is evolving as an indispensable factor of improving national economies efficiency in the global context. The economic role of the state is obviously growing even when its share in companies’ capital is reduced.


2021 ◽  
Vol 2042 (1) ◽  
pp. 012088
Author(s):  
Giacomo Cillari ◽  
Fabio Fantozzi ◽  
Alessandro Franco

Abstract The spread of nearly zero energy buildings (nZEB), promoted by the strategies set in the path of decarbonisation, has made the integration of renewable energy systems (RES) in buildings a common and strategic practice; in particular, they most involve small to medium building integrated photovoltaic (BIPV) systems coupled with heat pumps (HPs). One major challenge deals with the implementation of high self-consumption (SC) schemes for the energy produced on site, essential to carry on a wider implementation of photovoltaic systems. The present paper addresses the effect of different sizing strategies on the SC levels of 3 systems installed on traditional and nZEB houses, with a peak power between 3.12 kWp and 5.98 kWp. The systems have been monitored recording the various energy flows involved. Different optimization strategies have been tested with the purpose of minimizing the interaction with the grid, according to SC and self-sufficiency (SS) indexes. The aim is to provide design guidelines for the correct sizing in a bottom-up approach. Results underlined the fundamental role of storage technologies. Approximately 6 Wp/m2 assure an optimal energy employment without storage, with SS index below 35%: the integration of small storage, 3-7 kWh/kWp leads to SS and SC index above 60% and 88% respectively.


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