scholarly journals Micro Gas Turbines in the Future Smart Energy System: Fleet Monitoring, Diagnostics, and System Level Requirements

2021 ◽  
Vol 7 ◽  
Author(s):  
Ioanna Aslanidou ◽  
Moksadur Rahman ◽  
Valentina Zaccaria ◽  
Konstantinos G. Kyprianidis
Keyword(s):  
Gas Turbines ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Energy Generation ◽  
Energy System ◽  
Optimal Operation ◽  
Green Energy ◽  
System Level ◽  
The Future ◽  
Monitoring And Diagnostics

The energy generation landscape is changing, pushed by stricter regulations for emissions control and green energy generation. The limitations of renewable energy sources, however, require flexible energy production sources to supplement them. Micro gas turbine based combined heat and power plants, which are used for domestic applications, can fill this gap if they become more reliable. This can be achieved with the use of an engine monitoring and diagnostics system: real-time engine condition monitoring and fault diagnostics results in reduced operating and maintenance costs and increased component and engine life. In order to allow the step change in the connection of small engines to the grid, a fleet monitoring system for micro gas turbines is required. A proposed framework combines a physics-based model and a data-driven model with machine learning capabilities for predicting system behavior, and includes a purpose-developed diagnostic tool for anomaly detection and classification for a multitude of engines. The framework has been implemented on a fleet of micro gas turbines and some of the lessons learned from the demonstration of the concept as well as key takeaways from the general literature are presented in this paper. The extension of fleet monitoring to optimal operation and production planning in relation to the needs of the grid will allow the micro gas turbines to fit in the future green energy system, connect to the grid, and trade in the energy market. The requirements on the system level for the widespread use of micro gas turbines in the energy system are addressed in the paper. A review of the current solutions in fleet monitoring and diagnostics, generally developed for larger engines, is included, with an outlook into a sustainable future.

Design Optimization of Electrical Hubs Using Hybrid Evolutionary Algorithm

2016 ◽  
Author(s):  
A. T. D. Perera ◽  
Vahid M. Nik ◽  
D. Mauree ◽  
J.-L. Scartezzini
Keyword(s):  
Evolutionary Algorithm ◽  
System Design ◽  
Gas Turbines ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Electricity Demand ◽  
Simultaneous Optimization ◽  
Energy Sources ◽  
Virtual Power Plants

Integration of non-dispatchable renewable energy sources such as wind and solar into the grid is challenging due to the stochastic nature of energy sources. Hence, electrical hubs (EH) and virtual power plants that combine non-dispatchable energy sources, energy storage and dispatchable energy sources such as internal combustion generators and micro gas turbines are getting popular. However, designing such energy systems considering the electricity demand of a neighborhood, curtailments for grid interactions and real time pricing (RTP) of the main utility grid (MUG) is a difficult exercise. Seasonal and hourly variation of electricity demand, potential for each non-dispatchable energy source and RTP of MUG needs to be considered when designing the energy system. Representation of dispatch strategy plays a major role in this process where simultaneous optimization of system design and dispatch strategy is required. This study presents a bi-level dispatch strategy based on reinforced learning for simultaneous optimization of system design and operation strategy of an EH. Artificial Neural Network (ANN) was combined with a finite state controller to obtain the operating state of the system. Pareto optimization is conducted considering, lifecycle cost and system autonomy to obtain optimum system design using evolutionary algorithm.

scholarly journals Energy efficiency in Serbia national energy efficiency program: Strategy and priorities for the future

2006 ◽  
Vol 10 (4) ◽  
pp. 7-16 ◽  
Author(s):  
Simeon Oka ◽  
Aleksandar Sedmak ◽  
Maja Djurovic-Petrovic
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Energy Sector ◽  
Energy Sources ◽  
The Future ◽  
New Strategy ◽  
Energy Chain

Energy system in Serbia, in the whole energy chain, from exploitation of primary energy sources, transformations in electric power plants and district heating plants, energy (electric and heat) transmission and distribution to final users, and up to final energy consumption, is faced with a number of irrational and inefficient behavior and processes. In order to fight with such situation National Energy Efficiency Program, financed by the Ministry of Science and Environmental Protection has been founded in 2001. Basic facts about status of energy sector in Serbia, with special emphasis on the energy efficiency and use of renewable energy sources have been given in the review paper published in the issue No. 2, 2006 of this journal. In present paper new strategy and priorities of the National Energy Efficiency Program for the future period from 2006 to 2008, and beyond, is presented. This strategy and priorities are mainly based on the same concept and principles as previous, but new reality and new and more simulative economic and financial environment in energy sector made by the Energy low (accepted by Parliament in 2004) and Strategy of Development of Energy Sector in Republic Serbia up to 2015 (accepted by the Parliament in May 2005), have been taken into account. Also, responsibilities that are formulated in the Energy Community Treaty signed by the South-East European countries, and also coming from documents and directives of the European Community and Kyoto Protocol are included in new strategy. Once again necessity of legislative framework and influence of regulations and standards, as well as of the governmental support, has been pointed out if increased energy efficiency and increased use of renewable energy sources are expected. .

scholarly journals PROSPECTS OF NUCLEAR ENERGY SECTOR OF UKRAINE IN CONDITIONS OF SUSTAINABLE DEVELOPMENT

2021 ◽  
pp. 21-26
Author(s):  
Volodymyr Boiko ◽  
Iryna Miskevych
Keyword(s):  
Power Generation ◽  
Sustainable Development ◽  
Renewable Energy ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Energy ◽  
Energy Generation ◽  
Energy System ◽  
Energy Sector ◽  
Green Energy

This article examines the current prospects for developing nuclear energy in Ukraine in terms of sustainable development. The strategic importance of nuclear energy for Ukraine is indicated. The advantages of nuclear energy in the context of electricity production's external costs over other energy generation technologies are noted. Today, nuclear energy is considered the most cost-effective low-carbon energy source. An analysis of reports from the Atomic Energy Agency and the US Department of Energy shows that nuclear power generation is a leader in many countries' energy sector, producing cheaper electricity than traditional TPPs. The main challenges for the energy system of Ukraine are highlighted. Among them are: wear and tear and impact on the environment of thermal generation (equipment at thermal power plants is worn out by 70–90 %); the unsatisfactory pace of modernization of the main generating capacities, mainly TPPs; the inconsistency of the flexibility of the United Energy System (UES) of Ukraine with the development of "green" energy (increasing the share of "green" energy increases the risks of UES sustainability) and the corresponding ill-consideredness in the pace and scale of renewable energy implementation. Lack of shunting power; the need to duplicate the capacity of renewable energy due to the low installed capacity factor (ICUF) and significant dependence on natural and climatic conditions; the need to replace existing nuclear power units, which end their extended service life with new, more modern ones that will meet the latest safety and economy standards; the imperfection of the electricity market, primarily in the context of its sale by nuclear generation producers under bilateral agreements; deficit of investments in the whole fuel and energy complex. The main prospects for the development of nuclear energy in Ukraine are identified. Completion of Units 3 and 4 of Khmelnytskyi NPP (KhNPP) remains a critical prospect. An obstacle to this for Ukraine is the lack of appropriate technologies on the Ukrainian side and the curtailment of cooperation with Russia and companies belonging to this state. Another obstacle is that the promising power units of KhNPP based on WWER-1000 belong to the second generation, which today do not morally meet the latest trends and requirements in efficiency and safety standards. Theoretically, Western leaders in the nuclear industry, Orano and Westinghouse, could develop nuclear power plants based on their next-generation "3" and "3+" reactors, where the essential safety requirements are already embedded in the original design of the unit. Another option would be to implement a small modular reactor technology project in Ukraine. Technologically, this will quickly resolve the issue of load management, which arose due to the rapid increase in the share of renewable energy generation in our country. This type of reactor has a significant advantage, which in addition to the minimum load on the environment is: the possibility of placement in areas where additional services are needed in the energy market; low construction costs; frequency of service and operating time; the full cycle of work with fuel. In general, low-power reactors can be used to implement the strategy of hybrid power generation (renewable + nuclear energy).

Renewable energy sources generation forecasting in aggregated energy system level

2021 ◽  
Author(s):  
Ioannis Panapakidis ◽  
Georgios Gousis ◽  
Nikolaos Koltsaklis ◽  
Athanasios Dagoumas
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Energy System ◽  
System Level ◽  
Energy Sources

scholarly journals Optimal Municipal Energy System Design and Operation Using Cumulative Exergy Consumption Minimisation

Energies ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 182 ◽  
Author(s):  
Lukas Kriechbaum ◽  
Thomas Kienberger
Keyword(s):  
Renewable Energy ◽  
System Design ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Developed Countries ◽  
Raw Material ◽  
Energy Sources ◽  
Variable Renewable Energy Sources ◽  
Exergy Consumption

In developed countries like Austria the renewable energy potential might outpace the demand. This requires primary energy efficiency measures as well as an energy system design that enables the integration of variable renewable energy sources. Municipal energy systems, which supply customers with heat and electricity, will play an important role in this task. The cumulative exergy consumption methodology considers resource consumption from the raw material to the final product. It includes the exergetic expenses for imported energy as well as for building the energy infrastructure. In this paper, we determine the exergy optimal energy system design of an exemplary municipal energy system by using cumulative exergy consumption minimisation. The results of a case study show that well a linked electricity and heat system using heat pumps, combined heat power plants and battery and thermal storages is necessary. This enables an efficient supply and also provides the necessary flexibilities for integrating variable renewable energy sources.

scholarly journals Large scale integration of renewable energy sources (RES) in the future Colombian energy system

Energy ◽  
2019 ◽  
Vol 186 ◽  
pp. 115805 ◽  
Author(s):  
Oscar Pupo-Roncallo ◽  
Javier Campillo ◽  
Derek Ingham ◽  
Kevin Hughes ◽  
Mohammed Pourkashanian
Keyword(s):  
Renewable Energy ◽  
Large Scale ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Energy Sources ◽  
The Future ◽  
Large Scale Integration ◽  
Scale Integration

scholarly journals Legal Pathways to Coal Phase-Out in Italy in 2025

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5605 ◽  
Author(s):  
Matteo Fermeglia ◽  
Paolo Bevilacqua ◽  
Claudia Cafaro ◽  
Paolo Ceci ◽  
Antonio Fardelli
Keyword(s):  
Power Plants ◽  
State Of The Art ◽  
Renewable Energy Sources ◽  
Energy Generation ◽  
Electricity Production ◽  
Coal Power Plants ◽  
Coal Power ◽  
Phase Out ◽  
Existing Data

This contribution aims to provide an in-depth outlook of the phase-out of coal-fired energy generation in Italy. In particular, this article analyzes the state-of-the-art with regard to both the current role of coal generation and the performance of the main legal and regulatory tools as implemented in Italy thus far to ensure the closure of all coal power plants by 2025 as announced in the Italian National Climate and Energy Plan. Based on existing data and scenarios on both electricity production and demand trends, this article unfolds the marginal role played by coal-fired generation in the Italian energy mix. In addition, this paper aims to highlight the outstanding technical uncertainties and regulatory hurdles in the way towards de-carbonization of energy generation in Italy. This paper argues that several remarkable improvements are needed in order to avoid over-generation (especially through natural gas), to upscale the penetration of renewable energy sources, and develop the necessary infrastructures to adequately deliver on the full phasing-out of coal within the expected timeframes.

Optimal operation of a multi-energy system considering renewable energy sources stochasticity and impacts of electric vehicles

Energy ◽  
2019 ◽  
Vol 186 ◽  
pp. 115841 ◽  
Author(s):  
Mustafa Ata ◽  
Ayşe Kübra Erenoğlu ◽  
İbrahim Şengör ◽  
Ozan Erdinç ◽  
Akın Taşcıkaraoğlu ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Electric Vehicles ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Optimal Operation ◽  
Energy Sources

scholarly journals Renewable and Sustainable Energy Transitions for Countries with Different Climates and Renewable Energy Sources Potentials

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3523 ◽  
Author(s):  
Haichao Wang ◽  
Giulia Di Pietro ◽  
Xiaozhou Wu ◽  
Risto Lahdelma ◽  
Vittorio Verda ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Sustainable Energy ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Energy Sources ◽  
Climate Conditions ◽  
Energy System Model ◽  
Cross Border ◽  
Energy Transitions ◽  
The Future

Renewable energy sources (RES) are playing an increasingly important role in energy markets around the world. It is necessary to evaluate the benefits from a higher level of RES integration with respect to a more active cross-border transmission system. In particular, this paper focuses on the sustainable energy transitions for Finland and Italy, since they have two extreme climate conditions in Europe and quite different profiles in terms of energy production and demand. We developed a comprehensive energy system model using EnergyPLAN with hourly resolution for a reference year for both countries. The models include electricity, heat and transportation sectors. According to the current base models, new scenarios reflecting an RES increase in total fuel consumption have been proposed. The future shares of renewables are based on each nation’s potential. The outcomes of the new scenarios support the future national plans, showing how decarburization in an energy system can occur in relation to the European Roadmap 2030 and 2050. In addition, possible power transmission between Italy and Finland were investigated according to the vision of an integrated European energy system with more efficient cross-border activities.

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