MITANI Yasunori

写真a

Laboratory

1-1 Sensui-cho, Tobata-ku, Kitakyushu-shi, Fukuoka

Research Fields, Keywords

Power System, Stabilizing Control, Energy Saving, Natural Resources

Fax

+81-93-884-3222

Scopus Paper Info  
Total Paper Count: 0  Total Citation Count: 0  h-index: 23

Citation count denotes the number of citations in papers published for a particular year.

Undergraduate Education 【 display / non-display

  • 1981.03   Osaka University   Faculty of Engineering   Department of Electrical Engineering   Graduated   JAPAN

Post Graduate Education 【 display / non-display

  • 1986.03  Osaka University  Graduate School, Division of Engineering  Electrical Engineering  Doctoral Program  Completed  JAPAN

Degree 【 display / non-display

  • Osaka University -  Doctor of Engineering  1986.03

Biography in Kyutech 【 display / non-display

  • 2020.04
    -
    Now

    Kyushu Institute of Technology

  • 2020.04
    -
    Now

    Kyushu Institute of TechnologyOrganization for Promotion of Research and Open Innovation  

  • 2018.04
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    Now

    Kyushu Institute of TechnologyFaculty of Engineering   Department of Electrical Engineering and Electronics   Professor  

  • 2018.04
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    2020.03

    Kyushu Institute of Technology

  • 2018.04
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    2020.03

    Kyushu Institute of TechnologyFrontier Research Academy for Young Researchers  

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Biography before Kyutech 【 display / non-display

  • 1998.04
    -
    2003.03

      Associate Professor (as old post name)   JAPAN

Specialized Field (scientific research fund) 【 display / non-display

  • Power engineering/Power conversion/Electric machinery

 

Publications (Article) 【 display / non-display

  • Small-signal analysis of multiple virtual synchronous machines to enhance frequency stability of grid-connected high renewables

    Kerdphol T., Rahman F.S., Watanabe M., Mitani Y., Hongesombut K., Phunpeng V., Ngamroo I., Turschner D.

    IET Generation, Transmission and Distribution    15 ( 8 ) 1273 - 1289   2021.04  [Refereed]

     View Summary

    The virtual synchronous machine technology is considered as an important technique to effectively control the shortcomings of renewable energy-based power electronics interfaces, providing backup inertia and regulating grid stability. Conventionally, the virtual synchronous machine with a large capacity is responsible for controlling the entire grid stability against renewable penetration. It is usually operated as a centralised control system. But what if virtual synchronous machines with small capacities are independently operated by their additional droop control schemes, and will they present better performance than the single virtual synchronous machine? This study proposes the multiple virtual synchronous machine system with different active power-frequency (P-f) droop characteristics to improve inertia support regarding frequency stability improvement. The comprehensive small-signal modelling of the multiple virtual synchronous machine unit is designed to include the additional P-f droop characteristics. Then, the dynamic characteristics (steady-state and transient responses) and static stability of the multiple virtual synchronous machines are compared with the single virtual synchronous machine at the same rated capacity in both eigenvalue/sensitivity-domain and time-domain analysis. The obtained results reveal that the system with the presence of several virtual synchronous machines is more stable than the system with single virtual synchronous machine, maintaining stable and secure system operation during the contingency.

    DOI Scopus

  • Determining Inertia of 60 Hz Japan Power System using PMUs from Power Loss Event

    Kerdphol T., Watanabe M., Nishikawa R., Tamaki T., Mitani Y.

    2021 IEEE Texas Power and Energy Conference, TPEC 2021      2021.02  [Refereed]

     View Summary

    System inertia is an important part of evaluating the initial frequency drop after a disturbance. Low system inertia driven by high levels of inverter interfaced renewable energy sources (RESs) results in large frequency drops, which significantly lead to violation of frequency safety thresholds. Thus, enhancing operator awareness of system inertia would preserve high-quality frequency regulation in the system with RESs. This work presents a practical study of inertia estimation of the 60 Hz Japan power system using phasor measurement units (PMUs) and the recorded disturbance (i.e., active power loss). Using phasor data provided by eight PMUs in a longitudinal transmission network, the frequency and rate of change of frequency (ROCOF) values from each significant area are analyzed to estimate accurate system inertia based on frequency spectrum and mode shape analysis. The obtained results indicate that not all PMUs can provide inertia estimation with accuracy due to the effect of interarea oscillation. Evidentially, the accurate latency of inertia estimation could be found at the PMUs installed around the center of inertia frequency.

    DOI Scopus

  • Consideration of peak cut method by air conditioning equipment corresponding to demand for contract power reduction—Application of thermal radiative cooling/heating system

    Satake A., Jike J., Mitani Y.

    Energy Reports    6   768 - 774   2020.12  [Refereed]

     View Summary

    © 2020 The Authors Electricity demand leveling has actively been pursued in order to reduce power supply costs and reduce carbon dioxide emissions. In addition, large-scale customers have attracted great interest because of the expectation of contract power reduction. Focusing on the air conditioning equipment whose seasonal factors greatly change their demand, the peak cut operation has been considered for customers who have a large proportion of the load on the air conditioning equipment. The thermal radiative cooling/heating system is applied as the air conditioning equipment, and power control is performed according to the electricity demand of the customer. The comfort is evaluated by simulating the change in room temperature at that time. As a result, it is shown that the proposed demand response method can perform peak cut operation while ensuring comfort.

    DOI Scopus

  • Consideration of reducing purchased power using photovoltaic excess power by thermal radiative cooling/heating system

    Miyawaki R., Satake A., Mitani Y., Ushifusa Y.

    Energy Reports    6   814 - 821   2020.12  [Refereed]

     View Summary

    © 2020 The Authors The photovoltaic (PV) in general households has increased rapidly in Japan, where one of the causes is a start of Feed-in Tariff (FIT). However, after a term of FIT, a selling price will be much lower than that during the term. Therefore, utilizing PV power effectively in general households should be considered. Self-consumption of PV power is one of the effective utilization methods. Power consumption of load equipment in the households should be controlled for self-consumption of PV power which easily changes with time according to weather condition. In this paper, the thermal radiative cooling/heating system, which has a characteristic of heat storage is considered as one of the controllable equipment. The simulation model shows the thermal radiative cooling/heating system can reduce the purchased power with maintaining the room temperature using PV excess power.

    DOI Scopus

  • Monitoring Large-Scale PV Generation Infeed on Grid Frequency using Synchrophasor Measurement: Recent Perspective from Kyushu Island

    Kerdphol T., Matsukawa Y., Watanabe M., Mitani Y.

    Proceedings of the IEEE Power Engineering Society Transmission and Distribution Conference    2020-October   2020.10  [Refereed]

     View Summary

    © 2020 IEEE. The growing power in-feed of renewable/non-synchronous energy (e.g., solar/wind energy) in Japan power grid has raised serious concerns about frequency stability and control. The intermittent power output and lack of inertia property from large-scale solar/photovoltaic (PV) farms critically affect the balance between power generation and demand. Subsequently, the dynamic of grid frequency is severely deteriorated, resulting in rapid grid frequency deviations, and in the worst-case, power blackout. This paper proposes an advanced application of synchrophasor measurements for monitoring the dynamics and stability of Kyushu Island power system in the presence of large-scale solar penetration. In such a system, the dynamic analysis of the rate of change of frequency (RoCoF) is of great importance, reflecting the stability aspect of the system. Thus, contrastive scenarios of high-resolution synchrophasor measurements recorded in Kyushu region are analyzed against different levels of solar penetration. The results reveal that monitoring ROCOF and grid frequency variations in each scenario not only indicate the oscillatory behavior of the Kyushu power grid, but also provide useful information of the wide-area dynamic stability.

    DOI Scopus

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Publications (Books) 【 display / non-display

  • Power System Monitoring and Control

    Bevrani H., Bevrani H., Watanabe M., Mitani Y. ( Single Work )

    Power System Monitoring and Control  2014.06 ISBN: 9781118852422

     View Summary

    © 2014 by John Wiley & Sons, Inc. All rights reserved.Power System Monitoring and Control (PSMC) is becoming increasingly significant in the design, planning, and operation of modern electric power systems. In response to the existing challenge of integrating advanced metering, computation, communication, and control into appropriate levels of PSMC, Power System Monitoring and Control presents a comprehensive overview of the basic principles and key technologies for the monitoring, protection, and control of contemporary wide-area power systems. A variety of topical issues are addressed, including renewable energy sources, smart grids, wide-area stabilizing, coordinated voltage regulation, and angle oscillation damping-as well as the advantages of phasor measurement units (PMUs) and global positioning systems (GPS) time signal. End-of-chapter problems and solutions, along with case studies, add depth and clarity to all topics. Timely and important, Power System Monitoring and Control is an invaluable resource for addressing the myriad of critical technical engineering considerations in modern electric power system design and operation. Provides an updated and comprehensive reference for researcher and engineers working on wide-area power system monitoring and control (PSMC). Links fundamental concepts of PSMC, advanced metering and control theory/techniques, and practical engineering considerations. Covers PSMC problem understanding, design, practical aspects, and timely topics such as smart/microgrid control and coordinated voltage regulation and angle oscillation damping. Incorporates authors' experiences teaching and researching in various international locales including Japan, Thailand, Singapore, Malaysia, Iran, and Australia.

    Scopus

Conference Prsentations (Oral, Poster) 【 display / non-display

  • 産業用電力系統における誘導電動機の順次再閉路時間決定法

    金子悠一

    平成29年度(第70回)電気・情報関係学会九州支部連合大会  (平成29年度(第70回)電気・情報関係学会九州支部連合大会)  2017.09  -  2017.09 

  • EV電費情報を付加した地理情報システム(GIS)利用による走行支援システム

    中山俊太朗

    平成29年度(第70回)電気・情報関係学会九州支部連合大会  (琉球大学 千原キャンパス)  2017.09  -  2017.09 

  • Modeshapeおよび感度評価による電力系統動揺解析

    高橋響生

    平成29年度(第70回)電気・情報関係学会九州支部連合大会  (琉球大学 千原キャンパス)  2017.09  -  2017.09 

  • 多地点同期位相計測による 系統間動揺周波数計測に基づく 太陽光発電大量導入の影響評価

    綱分智則

    平成29年度(第70回)電気・情報関係学会九州支部連合大会  (琉球大学 千原キャンパス)  2017.09  -  2017.09 

  • 配電系統における分散設置効果を考慮したPV出力変動のコージェネレーションを用いた抑制制御効果の評価

    小井手孝徳

    平成29年度(第70回)電気・情報関係学会九州支部連合大会  (琉球大学 千原キャンパス)  2017.09  -  2017.09 

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Lectures 【 display / non-display

  • Phasor Measurement Unit (PMU) as a Powerful Tool to Support Smart Power Delivery (Phasor Measurement Unit (PMU) as a Powerful Tool to Support Smart Power Delivery)

    The International Conference on Electrical Engineering (The International Conference on Electrical Engineering)   2017.07.05 

  • Application of Phasor Measurements to Monitor the Power System Dynamics Associated with Large Amount of PV Installations

    IEEJ P&ES - IEEE Thailand Joint Symposium (IEEJ P&ES - IEEE Thailand Joint Symposium)   2017.03.07 

  • Applications of Phasor Measurement Unit (PMU) and Geographic Information System (GIS) in Power System Analysis

    Annual Conference of Korea Institute of Electrical Engineering   2016.11.03  Korea Institute of Electrical Engineering

  • スマート社会を支える電気エネルギー利用技術

    電気材料懇談会   2015.01.15 

  • Phasor and Node Voltage Measurements for Smart Monitoring of Power System Dynamics and Power Flows

    35th Electrical Engineering Conference (EECON-35) in Thailand   2012.12.14  35th Electrical Engineering Conference

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Grants-in-Aid for Scientific Research 【 display / non-display

  • Autonomous Distributed Observation System for Power Transaction

    Grant-in-Aid for Scientific Research(A)

    Project Year:  2006.06  -  2010.03

    Project Number:  18206028

  • Research on the power system monitoring by shynchronized phasor measurements

    Grant-in-Aid for JSPS Fellows

    Project Year:  2004.04  -  2005.11

    Project Number:  03F03227

  • Research on the power system monitoring by shynchronized phasor measurements

    Grant-in-Aid for JSPS Fellows

    Project Year:  2003.11  -  2004.03

    Project Number:  03F00227

  • Identification System for ower System Wide Area Dynamics by Multiple Synchronized Phasor Measurements

    Grant-in-Aid for Scientific Research(B)

    Project Year:  2002.06  -  2005.03

    Project Number:  14350145

 

Activities of Academic societies and Committees 【 display / non-display

  • 2016.05
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    2018.05

    The Institute of Electrical and Engineers of Japan   Presitdent of Power and Energy Society, IEEEJ

  • 2014.05
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    2016.05

    The Institute of Electrical and Engineers of Japan