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State-of-the-Art Energy Related Technologies in Japan 2021

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Special Issue Information
Keywords
Published Papers

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "K: State-of-the-Art Energy Related Technologies".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 9998

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Special Issue Editors

Prof. Dr. Tomonobu Senjyu

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Guest Editor

Department of Electrical and Electronics Engineering, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
Interests: high-efficiency energy conversion system; renewable energy in small islands; optimization of power system operation and control
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Prof. Dr. Satoru Okamoto

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Guest Editor

Interdisciplinary Graduate School of Science and Engineering, Shimane University, Matsue 690-8504, Japan
Interests: advanced thermal and fluids science and technology: flow-induced vibrations; small-scale energy systems with gas turbines and heat pumps; experimental fluid dynamics; heat transfer; biomedical engineering; artificial intelligence
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Dr. Muhammad Aziz

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Guest Editor

Institute of Industrial Science, The University of Tokyo, Tokyo 153-8505, Japan
Interests: energy systems; process design; power generation; carbon capture and storage; hydrogen production; renewable energy; energy conservation; energy and exergy analysis; exergy recovery; electric vehicle; batteries; smart grid
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Dr. Mahdi Khosravy

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Guest Editor

Media Integrated Laboratory, Osaka University, Osaka, Japan
Interests: power quality analysis; harmonics estimation; renewable energy control and management; optimization of power system operation and control; meta-heuristic optimization theory and applications
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Dr. Ryuto Shigenobu

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Guest Editor

Department of Electrical, Electronic and Computer Engineering, University of Fukui, Fukui, Japan
Interests: electrical and electronics

Prof. Dr. Yasuki Kansha

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Guest Editor

Institute of Industrial Science, University of Tokyo, Tokyo 113-8654, Japan
Interests: process design and control, optimization, heat integration, and energy/exergy analysis in chemical and energy processes

Prof. Dr. Takuya Oda

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Guest Editor

Institute of Innovative Research, Tokyo Institute of Technology, Tokyo 152-8550, Japan
Interests: energy systems; renewable energy; electric vehicle; demand response; transactive energy; smart grid; distributed energy resources

Special Issue Information

Dear Colleagues,

In Japan, the sustainable development of economy, energy, and the environment has become an important issue of global concern since 2000. A consensus has already been established regarding the development of a low carbon economy. Japan is designing and implementing low-emission development strategies in 2021. Recent advances in technology and policy in Japan 2021 will allow renewable energy, clean energy, and energy efficiency to play major roles in displacing fossil fuels and meeting global energy demand while reducing carbon dioxide emissions. Renewable and clean energy technologies are being rapidly commercialized and, in conjunction with efficiency gains, can achieve far greater emissions reductions than either could independently.

This Special Issue will provide a comprehensive overview on the state-of-the-art energy-related technologies in Japan. Research articles are invited, which will provide a consolidated, up-to-date perspective in energy-related areas. The Special Issue will publish full research papers and reviews. Potential topics include but are not limited to the topics outlined in the keywords.

Prof. Dr. Tomonobu Senjyu
Prof. Emer Satoru Okamoto
Prof. Dr. Muhammad Aziz
Dr. Mahdi Khosravy
Dr. Ryuto Shigenobu
Prof. Dr. Yasuki Kansha
Prof. Dr. Takuya Oda
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

Renewable energy
Energy efficiency
Sustainable biofuels
Nuclear power
Smart grid
Methane cycle
Carbon capture and storage
Combined heat and power
Electric vehicles
Hydrogen
Smart city
Zero energy house/building
Power electronics
Power system
Waste to energy
Ammonia
Energy storage
Energy conversion
Power generation

Published Papers (4 papers)

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Research

23 pages, 1402 KiB

Open AccessArticle

Optimal Location and Sizing of Renewable Distributed Generators for Improving Voltage Stability and Security Considering Reactive Power Compensation

by Akanit Kwangkaew, Saher Javaid, Chalie Charoenlarpnopparut and Mineo Kaneko

Energies 2022, 15(6), 2126; https://doi.org/10.3390/en15062126 - 14 Mar 2022

Cited by 3 | Viewed by 1858

Abstract

The integration of renewable resources into the existing power distribution system is expanding to reduce gas emissions, treat climate change and satisfy the current global need for clean energy. If the location and size of these renewable generators are determined without considering uncontrollable reactive power compensation caused by their intermittent nature, the resultant power system may suffer from system instability and decreased reliability. Therefore, the issue of optimal location and size of renewable resources attracts great attention. In this paper, a methodology is proposed to optimize the locations and capacities of distributed renewable generators installed in conventional power distribution systems. In particular, uncontrollable reactive power compensation of these renewable resources is considered in this paper and managed through the proposed methodology to ensure power system reliability and stability. As a result, the proposed methodology reminds us of the importance of reactive power compensation by performing better in power losses reduction and the robustness of voltage stability against variable reactive power compensation. Full article

(This article belongs to the Special Issue State-of-the-Art Energy Related Technologies in Japan 2021)

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16 pages, 13080 KiB

Open AccessArticle

A Game Theory Approach Using the TLBO Algorithm for Generation Expansion Planning by Applying Carbon Curtailment Policy

by Seyed Hamed Jalalzad, Hossein Yektamoghadam, Rouzbeh Haghighi, Majid Dehghani, Amirhossein Nikoofard, Mahdi Khosravy and Tomonobu Senjyu

Energies 2022, 15(3), 1172; https://doi.org/10.3390/en15031172 - 05 Feb 2022

Cited by 5 | Viewed by 2052

Abstract

In the present climate, due to the cost of investments, pollutants of fossil fuel, and global warming, it seems rational to accept numerous potential benefits of optimal generation expansion planning. Generation expansion planning by regarding these goals and providing the best plan for the future of the power plants reinforces the idea that plants are capable of generating electricity in environmentally friendly circumstances, particularly by reducing greenhouse gas production. This paper has applied a teaching–learning-based optimization algorithm to provide an optimal strategy for power plants and the proposed algorithm has been compared with other optimization methods. Then the game theory approach is implemented to make a competitive situation among power plants. A combined algorithm has been developed to reach the Nash equilibrium point. Moreover, the government role has been considered in order to reduce carbon emission and achieve the green earth policies. Three scenarios have been regarded to evaluate the efficiency of the proposed method. Finally, sensitivity analysis has been applied, and then the simulation results have been discussed. Full article

(This article belongs to the Special Issue State-of-the-Art Energy Related Technologies in Japan 2021)

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21 pages, 1565 KiB

Open AccessArticle

Impact of Time-of-Use Demand Response Program on Optimal Operation of Afghanistan Real Power System

by Mohammad Masih Sediqi, Akito Nakadomari, Alexey Mikhaylov, Narayanan Krishnan, Mohammed Elsayed Lotfy, Atsushi Yona and Tomonobu Senjyu

Energies 2022, 15(1), 296; https://doi.org/10.3390/en15010296 - 02 Jan 2022

Cited by 29 | Viewed by 1717

Abstract

Like most developing countries, Afghanistan still employs the traditional philosophy of supplying all its load demands whenever they happen. However, to have a reliable and cost-effective system, the new approach proposes to keep the variations of demand at the lowest possible level. The power system infrastructure requires massive capital investment; demand response (DR) is one of the economic options for running the system according to the new scheme. DR has become the intention of many researchers in developed countries. However, very limited works have investigated the employment of appropriate DR programs for developing nations, particularly considering renewable energy sources (RESs). In this paper, as two-stage programming, the effect of the time-of-use demand response (TOU-DR) program on optimal operation of Afghanistan real power system in the presence of RESs and pumped hydropower storage (PHS) system in the day-ahead power market is analyzed. Using the concept of price elasticity, first, an economic model indicating the behaviour of customers involved in TOU-DR program is developed. A genetic algorithm (GA) coded in MATLAB software is used accordingly to schedule energy and reserve so that the total operation cost of the system is minimized. Two simulation cases are considered to verify the effectiveness of the suggested scheme. The first stage programming approach leads case 2 with TOU-DR program to 35 MW (811 MW − 776 MW), $16,235 ($528,825 − $512,590), and 64 MW reductions in the peak load, customer bill and peak to valley distance, respectively compared to case 1 without TOU-DR program. Also, the simulation results for stage 2 show that by employing the TOU-DR program, the system’s total cost can be reduced from $317,880 to $302,750, which indicates a significant reduction in thermal units’ operation cost, import power tariffs and reserve cost. Full article

(This article belongs to the Special Issue State-of-the-Art Energy Related Technologies in Japan 2021)

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20 pages, 2134 KiB

Open AccessArticle

A Comparative Design of a Campus Microgrid Considering a Multi-Scenario and Multi-Objective Approach

by Yongyi Huang, Hasan Masrur, Ryuto Shigenobu, Ashraf Mohamed Hemeida, Alexey Mikhaylov and Tomonobu Senjyu

Energies 2021, 14(11), 2853; https://doi.org/10.3390/en14112853 - 21 May 2021

Cited by 39 | Viewed by 2810

Abstract

This article proposes a plan to replace real-time power with constant power from the grid to reduce costs and reduce the impact of the micro-grid on the main grid at the same time. Most of the peak electricity consumption periods of universities or some enterprise institutions are during the daytime. If solar energy can be used reasonably at this time, it can provide a good guarantee of peak power. In this study, a grid-linked solar-plus-storage micro-grid was used to supply power to a university located in Okinawa, Japan. The non-dominated sorting genetic algorithm II (NSGA-II) was used to optimize the model size, and the loss of power supply probability (LPSP), life cycle cost (LCC), and waste of energy (WE) were taken as the optimization indicators. For this study, three scenarios were considered where the first scheme (Case 1) was a comparison scheme, which used a PV battery and real-time power from the infinity bus. Both the second and third cases used constant power. While Case 2 used constant power throughout the year, Case 3 used daily constant power. The optimal solutions for the power supply units were grouped into three cases where Case 1 was found to be the most expensive one. It was found that the costs of Cases 2 and 3 were 62.8% and 63.3% less than Case 1. As a result, the waste of energy was found to be more significant than Case 1: 70 times and 60 times, respectively. On the contrary, Case 1 had 15.2% and 16.7% less carbon emissions than Case 2 and Case 3, respectively. This article put forward the idea of constant power supply growth at the financial markets, which breaks the traditional way in which the power supply side follows the user’s consumption. While reducing costs, it reduces the impact on large-scale power grids and can also ensure the reliability of campus microgrids. Full article

(This article belongs to the Special Issue State-of-the-Art Energy Related Technologies in Japan 2021)

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