scholarly journals A Survey on Optimal Control and Operation of Integrated Energy Systems

Complexity ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-14
Author(s):  
Chun Wei ◽  
Xiangzhi Xu ◽  
Youbing Zhang ◽  
Xiangshan Li
Keyword(s):  
Optimal Control ◽  
Renewable Energy ◽  
Optimization Problems ◽  
Optimal Operation ◽  
Internet Technology ◽  
Sensor Technology ◽  
Future Research ◽  
Energy Structure ◽  
Research Status ◽  
The Future

At present, the transformation of energy structure is at a critical stage, and emerging renewable energy technologies and multienergy equipment have been widely used. How to improve the energy efficiency of integrated energy system (IES) and promote large-scale absorption of renewable energy is of great significance to the application forms of energy in the future. The development of new internet technology and sensor technology provides strong technical support for the optimal operation and coordinated control of IES. In recent years, the IES is experiencing unprecedented changes, which has attracted great attention from academia and industry. In this paper, the optimal control and operation behavior of IES are reviewed. Firstly, the research status of IES in recent years is summarized. Then, the modeling methods of different equipment in IES are analyzed in detail. The optimal operation of user, regional, and cross-regional IES are taken as typical research objects and the research status of optimization problems and operation modes, energy management planning, and power market allocation are summarized and analyzed. Finally, the key scientific issues and related frontier technologies in the IES are concluded, and the future research directions are prospected.

scholarly journals Multi-Disciplinary and Multi-Scale Assessment of Marine Renewable Energy Structure in a Tidal System

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Aurore Raoux ◽  
◽  
Ilan Robin ◽  
Jean-Philippe Pezy ◽  
Anne-Claire Bennis ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Wind Farm ◽  
Scale Effects ◽  
Structural Characteristics ◽  
Tidal Energy ◽  
Ecosystem Approach ◽  
Offshore Wind ◽  
Future Research ◽  
Energy Structure ◽  
Marine Renewable Energy

The French coast of the Atlantic and English Channel (EC) is promising for the development of Marine Renewable Energy (MRE), including wind, wave, and tidal stream, due to the high velocity of currents in some parts of the area. This paper, focusing on wind and tidal energy, discusses how the implementation of MRE converters influences biodiversity, and vice versa, through biofouling and reef effects. The understanding of these interactions requires the knowledge of the hydro-sedimentary conditions and the macrofauna. The research on these topics, performed at the Continental and Coastal Morphodynamic laboratory (M2C) (UNICAEN, France), is presented through a multi-disciplinary approach by i) studying the hydrodynamic conditions and the macrofauna in Alderney Race, ii) studying the biofouling effects on tidal turbines and their influence on the turbulent wake, iii) assessing the hydro-sedimentary impacts induced by the offshore wind farm, like scouring, and iv) taking an ecosystem approach on MRE, such as the reef effect. From an ecological perspective, the reef effect can be responsible for changes in the structure and function of the ecosystem. Although several studies have analyzed this effect at the species-or community-scale, the propagation of the reef effect at the ecosystem-scale remains unclear. Thus, understanding these ecosystem-scale effects is urgent for future research. From an engineering perspective, biofouling changes the structural characteristics (i.e., supplementary mass) of the converters and thus, affects their performance.

Research Review of Relationship between TQM and Organization Innovation

2012 ◽  
Vol 472-475 ◽  
pp. 3023-3028
Author(s):  
Xin Ping Wang ◽  
Zi Han Liu
Keyword(s):  
Influence Factors ◽  
Research Direction ◽  
Research Review ◽  
Future Research ◽  
Future Research Direction ◽  
Relevant Study ◽  
Research Status ◽  
The Future

So far, there isn’t more general research review of relationship about TQM and organization innovation. This article summarizes literatures of TQM and its elements, organization innovation and its influence factors and their relationship. It aims at offering reference for the future relevant study, and combines the current research status, points out the future research direction.

scholarly journals Optimal Operation Control of PV-Biomass Gasifier-Diesel-Hybrid Systems Using Reinforcement Learning Techniques

Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2632 ◽  
Author(s):  
Alexander N. Kozlov ◽  
Nikita V. Tomin ◽  
Denis N. Sidorov ◽  
Electo E. S. Lora ◽  
Victor G. Kurbatsky
Keyword(s):  
Renewable Energy ◽  
Reinforcement Learning ◽  
Optimization Problems ◽  
Combustion Engine ◽  
Renewable Energy Sources ◽  
Biomass Gasification ◽  
Optimal Operation ◽  
Total System ◽  
Producer Gas ◽  
Markov Decision

The importance of efficient utilization of biomass as renewable energy in terms of global warming and resource shortages are well known and documented. Biomass gasification is a promising power technology especially for decentralized energy systems. Decisive progress has been made in the gasification technologies development during the last decade. This paper deals with the control and optimization problems for an isolated microgrid combining the renewable energy sources (solar energy and biomass gasification) with a diesel power plant. The control problem of an isolated microgrid is formulated as a Markov decision process and we studied how reinforcement learning can be employed to address this problem to minimize the total system cost. The most economic microgrid configuration was found, and it uses biomass gasification units with an internal combustion engine operating both in single-fuel mode (producer gas) and in dual-fuel mode (diesel fuel and producer gas).

scholarly journals A Review of Research Status and Prospect of Vacuum Insulated Tubing Insulation System

2020 ◽  
Vol 155 ◽  
pp. 01007
Author(s):  
Xing Yu ◽  
Liu Lei ◽  
Cao Chang ◽  
Fan Weidong ◽  
Yan Keju ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Thermal Recovery ◽  
Future Research ◽  
Recovery Efficiency ◽  
Insulation System ◽  
Research Status ◽  
Insulation Materials ◽  
Insulation Coating ◽  
The Future

Vacuum heat insulating tubing is an important wellbore heat insulating facility for heavy oil thermal recovery at present. Its heat insulating performance directly affects the thermal recovery efficiency. The research on the heat insulating system of vacuum heat insulating tubing is of great significance to improve and improve the heat insulating performance and enhance the thermal recovery of heavy oil. This paper summarizes and analyses the current research status of vacuum insulated tubing insulation system. It elaborates the insulation structure, insulation materials, annular air charging and vacuum pumping, insulation coating and so on. It provides reference and reference for the future research of vacuum insulated tubing.

Overview on the Bearing Behavior Research of Rock-Socketed Piles

2013 ◽  
Vol 353-356 ◽  
pp. 172-176 ◽  
Author(s):  
Yang Luo ◽  
Heng Liu ◽  
Tie Hang Wang
Keyword(s):  
Bearing Capacity ◽  
Failure Mechanism ◽  
Calculation Model ◽  
Future Research ◽  
Research Status ◽  
The Future ◽  
Main Factors ◽  
Bearing Characteristic ◽  
Bearing Behavior

It mainly reviewed the current research status of the bearing characteristic of rock-socketed piles. From reading all kinds of calculation model in different code, it pointed out the disadvantages. It concluded the present work on the two main factors which influence the bearing capacity of rock-socketed pile most. Based on this work, it figures out the deficiencies of the research presently and prospects the future research. In the end, it suggests that the bearing behavior and failure mechanism of rock-socketed piles with thick sediments remains need to be further discussed.

Analysis of the Development of China's Marine Renewable Energy Industry

2014 ◽  
Vol 48 (6) ◽  
pp. 65-73 ◽  
Author(s):  
Xia Dengwen ◽  
Gao Yanbo ◽  
Wang Ji ◽  
Xia Qian
Keyword(s):  
Renewable Energy ◽  
Service Providers ◽  
Reducing Power ◽  
Industrial Applications ◽  
Energy Structure ◽  
Chinese Government ◽  
Ocean Energy ◽  
Marine Renewable Energy ◽  
The Future ◽  
Development And Utilization

AbstractThe Chinese government has attached great significance to the research, development, and utilization of marine renewable energy (MRE), all of which made significant achievements in the year 2012. This paper systematically reviews and analyzes the development status of China's MRE industry, in terms of resources, policies, and technologies. Some problems are also pointed out, in order to provide further suggestions for China's MRE sector in the future. Prospects and main tasks in the near future are proposed to establish the demonstration bases of MRE and the national public supporting platform for MRE. The development and utilization of MRE have become a significant measure for China for increasing renewable energy power, optimizing energy structure, developing the marine economy, and reducing power shortages on islands. In the future, China will continue to promote the R&D of ocean energy technology as well as the development of technology demonstration and perfection among service providers of industrial applications.

scholarly journals Current Situation and Future Perspectives of the Romanian Renewable Energy

2018 ◽  
Author(s):  
Ştefan Dragoş Cîrstea ◽  
Claudia Steluţa Martiş ◽  
Andreea Cîrstea ◽  
Anca Constinescu-Dobra ◽  
Melinda Timea Fulop
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Energy Structure ◽  
Future Trends ◽  
Future Perspectives ◽  
Support Mechanism ◽  
The Future ◽  
Exploratory Data ◽  
Countermeasures And Suggestions

In 2015, Romania was the first country in Europe that achieved EU targets regarding the share of renewables in the generation mix, far ahead of the 2020 deadline. Starting with the energy structure in Romania, the paper: (1) analyses the evolution of the main indicators in the renewable energy sector, (2) discloses the perspectives of renewable energy in Romania synthesizing the main trends of development in the field and (3) analyses the challenges facing with the development of renewable energy in Romania. Based on analyzing the exploratory data, the paper makes a preliminary prediction of the development of the sector for the future decades and proposes targeted countermeasures and suggestions. Romania still has unexploited potential concerning renewable energy sources. Because Romania registered a continuous economic growth, the demand for electricity is steadily growing, and this trend is expected to continue. Also, Romania could introduce a support mechanism for developing the potential of unexploited potential. The results of the present study may be useful for further research regarding public policies for the development of renewable energy. Also, it can represent a useful analysis in order to identify the future trends of renewable energy in Romania.

Current Postvention Research and Priorities for the Future

Crisis ◽  
2017 ◽  
Vol 38 (3) ◽  
pp. 202-206 ◽  
Author(s):  
Karl Andriessen ◽  
Dolores Angela Castelli Dransart ◽  
Julie Cerel ◽  
Myfanwy Maple
Keyword(s):  
Social Life ◽  
Online Survey ◽  
Research Priorities ◽  
Future Research ◽  
Physical And Mental Health ◽  
Intercultural Collaboration ◽  
The Social ◽  
The Future ◽  
Suicide Bereavement ◽  
Ethical Approval

Abstract. Background: Suicide can have a lasting impact on the social life as well as the physical and mental health of the bereaved. Targeted research is needed to better understand the nature of suicide bereavement and the effectiveness of support. Aims: To take stock of ongoing studies, and to inquire about future research priorities regarding suicide bereavement and postvention. Method: In March 2015, an online survey was widely disseminated in the suicidology community. Results: The questionnaire was accessed 77 times, and 22 records were included in the analysis. The respondents provided valuable information regarding current research projects and recommendations for the future. Limitations: Bearing in mind the modest number of replies, all from respondents in Westernized countries, it is not known how representative the findings are. Conclusion: The survey generated three strategies for future postvention research: increase intercultural collaboration, increase theory-driven research, and build bonds between research and practice. Future surveys should include experiences with obtaining research grants and ethical approval for postvention studies.

The Knowledge Creation Organization: The Case of Alphana

2012 ◽  
pp. 78-90
Author(s):  
Thang Nguyen Ngoc
Keyword(s):  
Competitive Advantage ◽  
Knowledge Creation ◽  
Future Research ◽  
Sustainable Competitive Advantage ◽  
Knowledge Based ◽  
The Future

Knowledge and the capability to create and utilize knowledge today are consid- ered to be the most important sources of a firm’s sustainable competitive advantage. This paper aims to advance understanding of the knowledge creation of firm in Vietnam by studying Alphanam Company. The case illustrates how knowledge- based management pursues a vision for the future based on ideals that consider the relationships of people in society. The finding shows that the case succeeded because of their flexibility and mobility to keep meeting to the changing needs of the customers or stakeholders. The paper also provided some suggestions for future research to examine knowledge-based management of the companies in a different industry segments and companies originating in other countries

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