scholarly journals Clustering Technique for Scenario Reduction in Post-Energy Transition Voltage Dips Assessment

2021 ◽  
Vol 19 ◽  
pp. 241-245
Author(s):  
R. Torkzadeh ◽  
◽  
J.B.M. van Waes ◽  
V. Cuk ◽  
J.F.G. Cobben
Keyword(s):  
Energy Transition ◽  
Operating Conditions ◽  
Assessment Criteria ◽  
Clustering Technique ◽  
Whole Process ◽  
Voltage Dip ◽  
Voltage Dips ◽  
System Operator ◽  
Phase Out ◽  
Multiple Scenarios

The Dutch transmission system operator makes multiple scenarios to predict the future developments. These scenarios will help to define the risk factors and constraints in the grid, for which reinforcement planning is necessary. The developed grid after these reinforcements should continue to fulfil the power quality assessment criteria specified in the Dutch grid code. The reduction in system strength due to partial phase out of the conventional generation may have an adverse impact on the PQ, especially the voltage dips. Precise assessment criteria for voltage dips have been stipulated by the Dutch grid code that also need to be met after the energy transition. Evaluating all possible grid future scenarios can provide insight in possible future operating conditions. In practice, due to various combinations of network configurations, loading scenarios and dispatch scenarios, it is not possible to analyze all operating scenarios in detail. This paper presents a method to determine the most important scenarios for voltage dip assessments using a clustering technique. The proposed clustering technique reduces the number of scenarios that are needed to be assessed that makes the whole process doable in practice.

scholarly journals A Latent Heat Storage System for Low-Temperature Applications: From Materials Selection to Prototype Performances

2021 ◽  
Vol 11 (21) ◽  
pp. 10350
Author(s):  
Didier Haillot ◽  
Yasmine Lalau ◽  
Erwin Franquet ◽  
Sacha Rigal ◽  
Frederic Jay ◽  
...  
Keyword(s):  
Low Temperature ◽  
Latent Heat ◽  
Heat Storage ◽  
Waste Heat ◽  
Material Selection ◽  
Energy Transition ◽  
Industrial Sector ◽  
Operating Conditions ◽  
Acid Mixture ◽  
Latent Heat Storage

The industrial sector is increasingly obliged to reduce its energy consumption and greenhouse gases emissions to contribute to the world organizations’ targets in energy transition. An energy efficiency solution lies in the development of thermal energy storage systems, which are notably lacking in the low-temperature range (50–85 °C), for applications such as district heating or low-temperature waste heat recovery. This work aims to bring a latent heat storage solution from material selection to prototype evaluation. The first part of this paper is dedicated to the characterization and aging of a phase change material selected from a screening of the literature (fatty acid mixture mainly composed by stearic and palmitic acid). Then, this material is encapsulated and tested in a prototype whose performances are evaluated under various operating conditions. Finally, a numerical model validated by the experimental results is used to explore the influence of a wider range of operating conditions, dimensioning choices, and material conductivity improvements.

scholarly journals Coal, Climate Justice, and the Cultural Politics of Energy Transition

2019 ◽  
Vol 19 (2) ◽  
pp. 149-168 ◽  
Author(s):  
Benjamin Brown ◽  
Samuel J. Spiegel
Keyword(s):  
Climate Change ◽  
Cultural Politics ◽  
Power Plants ◽  
Fossil Fuel ◽  
Energy Transition ◽  
Paris Agreement ◽  
Climate Justice ◽  
The World ◽  
Phase Out ◽  
Development Agendas

In the wake of the Paris Agreement on climate change, promises to phase out coal-fired power have suggested cause for optimism around energy transition globally. However, coal remains entangled with contentious development agendas in many parts of the world, while fossil fuel industries continue to flourish. This article discusses these entanglements through a climate justice lens that engages the cultural politics surrounding coal and energy transition. We highlight how recent struggles around phasing out coal have stimulated renewed critical debates around colonialism, empire, and capitalism more broadly, recognizing climate change as an intersectional issue encompassing racial, gender, and economic justice. With social movements locked in struggles to resist the development or expansion of coal mines, power plants, and associated infrastructure, we unpack tensions that emerge as transnational alliances connect disparate communities across the world. Our conclusion signals the need for greater critical engagement with how intersecting inequalities are coded into the cultural politics of coal, and how this shapes efforts to pursue a just transition.

scholarly journals Incumbents’ Strategies in Media Coverage: A Case of the Czech Coal Policy

2020 ◽  
Vol 8 (2) ◽  
pp. 272-285 ◽  
Author(s):  
Ondřej Černý ◽  
Petr Ocelík
Keyword(s):  
Policy Change ◽  
Media Coverage ◽  
Carbon Dioxide Emissions ◽  
Energy Transition ◽  
Transition Process ◽  
Communist Country ◽  
Policy Debate ◽  
Discursive Strategies ◽  
Phase Out ◽  
Energy And Climate Policy

Transitioning to a decarbonized economy is a crucial part of climate change mitigation, with the phasing-out of coal, as the most significant source of carbon dioxide emissions, being the centerpiece of this effort. In the European context, the increasing pressures exerted especially on the basis of the European Union’s energy and climate policy, coupled with the inherent uncertainty of the transition process, encourage various struggles among the involved policy actors over the setting of specific transition pathways. One site of such contestation is media discourse, which may facilitate or limit policy change through agenda-setting, framing, and other processes. Importantly, discursive struggles also include industry incumbents, who have a vested interest in preserving the existing sociotechnical regime. This article focuses on the position of incumbents in terms of their relationship with governing political parties and the discursive strategies they employ. It explores the policy debate on coal mining expansion which took place in 2015 in the Czech Republic, a post-communist country with a coal-dependent economy, a skeptical position on energy transition, and a powerful energy industry. The research employs discourse network analysis to examine a corpus compiled from daily newspapers and applies block modeling techniques to analyze patterns of relationships within and between actor groups. The results show that incumbents successfully prevented policy change in the direction of rapid coal phase-out by exploiting discourse alignment with governing parties and efficiently employing discursive strategies based primarily on securitization of socioeconomic issues.

scholarly journals Step-wise Approach to Investigate the Impact of Energy Transition on Voltage Dips in Dutch Electricity Grid

2020 ◽  
Vol 18 ◽  
pp. 574-578
Author(s):  
R. Torkzadeh ◽  
◽  
R. L. E. Peters ◽  
V. Cuk ◽  
J.B.M. van Waes ◽  
...  
Keyword(s):  
Energy Transition ◽  
Electricity Grid ◽  
Voltage Dips ◽  
The Impact

scholarly journals The Efforts towards and Challenges of Greece’s Post-Lignite Era: The Case of Megalopolis

2020 ◽  
Vol 12 (24) ◽  
pp. 10575
Author(s):  
Vangelis Marinakis ◽  
Alexandros Flamos ◽  
Giorgos Stamtsis ◽  
Ioannis Georgizas ◽  
Yannis Maniatis ◽  
...  
Keyword(s):  
Agricultural Production ◽  
Energy Production ◽  
Significant Contribution ◽  
Swot Analysis ◽  
District Heating ◽  
Energy Transition ◽  
Clean Energy ◽  
Household Energy ◽  
Regional Unit ◽  
Phase Out

Greece has historically been one of the most lignite-dependent countries in Europe, due to the abundant coal resources in the region of Western Macedonia and the municipality of Megalopolis, Arcadia (region of Peloponnese). However, a key part of the National Energy and Climate Plan is to gradually phase out the use of lignite, which includes the decommissioning of all existing lignite units by 2023, except the Ptolemaida V unit, which will be closed by 2028. This plan makes Greece a frontrunner among countries who intensively use lignite in energy production. In this context, this paper investigates the environmental, economic, and social state of Megalopolis and the related perspectives with regard to the energy transition, through the elaboration of a SWOT analysis, highlighting the strengths, weaknesses, opportunities, and threats of the municipality of Megalopolis and the regional unit of Arcadia. The analysis is based on four main pillars, namely “clean energy”, “smart agricultural production”, “sustainable tourism”, and “other (e.g., industry, technology, and education)”. The integration of the “Energy Efficiency First” principle, the mitigation of household energy poverty (especially in a region with district heating installations), and collectively driven energy actions for engaging and empowering younger generations (e.g., in the form of next-generation energy communities) are among the solutions that are expected to have a significant contribution towards Megalopolis’ just energy transition.

scholarly journals What Can Politics Learn from Management Decisions? A Case Study of Germany’s Exit from Nuclear Energy after Fukushima

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3730
Author(s):  
Florian Follert ◽  
Werner Gleißner ◽  
Dominik Möst
Keyword(s):  
Decision Making ◽  
Decision Theory ◽  
Nuclear Power ◽  
Nuclear Energy ◽  
Private Property ◽  
Energy Transition ◽  
Management Decision ◽  
Political Decision ◽  
Political Actors ◽  
Phase Out

The devastating nuclear disaster in Fukushima, Japan, in 2011, which was triggered by a tsunami in the wake of an earthquake, resulted in the decision to quickly phase out nuclear power and with it implicitly accelerated the German Energiewende (energy transition). To the outside observer, the decision appeared to be spontaneous and possibly due to a distorted perception of the associated risks of nuclear power. From the decision results not only the limiting uses of private property by conventional energy providers, but the exit from nuclear energy has also implications for the energy market. As with every human, political actors decide under uncertainty and incomplete information. Based on these parameters, we emphasize that the decision of a political actor is comparable to management decision-making. The paper takes this as an opportunity to examine the political decision to phase-out nuclear energy by discussing relevant parameters from the perspective of decision theory. We plead for a mandatory consideration of economic findings, especially from decision theory and risk management in political decision-making processes, especially in matters that affect future generations.

scholarly journals Optimization of energy storage and system flexibility in the context of the energy transition: Germany’s power grid as a case study

BMC Energy ◽  
2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Leonardo K. K. Maia ◽  
Edwin Zondervan
Keyword(s):  
Mathematical Modeling ◽  
Renewable Energy ◽  
Power Plants ◽  
Large Scale ◽  
Power Grid ◽  
Electricity Consumption ◽  
Lithium Ion ◽  
Energy Transition ◽  
Phase Out

AbstractIn this work we explore the ramifications of incoming changes brought by the energy transition, most notably the increased penetration of variable renewable energy (VRE) and phase-out of nuclear and other conventional electricity sources. The power grid will require additional flexibility capabilities to accommodate such changes, as the mismatch between generation and demand is bound to increase. Through mathematical modeling and optimization, we simulate the German power grid and investigate the requirements of on-grid large-scale storage. Different scenarios are evaluated up to 2050, when 80% of the gross electricity consumption is planned to be provided by renewable energy. Dispatchable power plants will play a key role in the transition to an energy mix with high shares of VRE. Around 120 GW of additional large-scale storage are required until 2050. Between the electrochemical technologies evaluated, lithium-ion was the best candidate. A strong reliance on dispatchables was observed, in case the commissioning of VRE plants goes slower than planned. Energy curtailment increases with VRE shares, with up to 14 TWh curtailed in high VRE scenarios in 2050.

Sign in / Sign up

Export Citation Format

Share Document