Updated on 2022/05/24

写真a

 
NAKANISHI, Yosuke
 
Affiliation
Faculty of Science and Engineering, Graduate School of Environment and Energy Engineering
Job title
Professor

Concurrent Post

  • Faculty of Science and Engineering   School of Advanced Science and Engineering

Research Institute

  • 2020
    -
    2022

    理工学術院総合研究所   兼任研究員

Degree

  • 博士

 

Research Areas

  • Earth resource engineering, Energy sciences

Papers

  • Optimal Scheduling of an Isolated Wind-Diesel-Battery System considering Forecast Error and Primary Frequency Response

    Nguyen Nhung Hong, Nakanishi Yosuke

    INTERNATIONAL CONFERENCE ON RENEWABLE ENERGY RESEARCH AND APPLICATIONS    2018.10

  • Optimization Design Suite for Expandable Micro-Grid Clusters

    Iwamura Kazuaki, Nishiyama Kohei, Ryo Kobayashi, Nakanishi Yosuke, Lewlomphaisarl Udom, Estoperez Noel, Lomi Abraham

    INTERNATIONAL CONFERENCE ON RENEWABLE ENERGY RESEARCH AND APPLICATIONS    2018.10

  • Robust Tracking and Disturbance Rejection for Linear Uncertain System with Unknown State Delay and Disturbance

    Pan Yu, Min Wu, Jinhua She, Kang-Zhi Liu, Yosuke Nakanishi

    IEEE/ASME Transactions on Mechatronics   23 ( 3 ) 1445 - 1455  2018.06  [Refereed]

     View Summary

    A robust tracking control method is presented in this paper for an uncertain plant with an unknown state delay and an exogenous disturbance. The effects of the uncertainties, the delay, and the exogenous disturbance are treated as a total disturbance
    thus, the construction of the observer does not need the delay information. The system design is divided into the design of the gains of the state-feedback controller as well as the design of the gains of the observer and the improved equivalent-input-disturbance (EID) estimator. The pole-assignment method is used to design the gains of the state-feedback controller of a simplified system. A robust-stability condition in the form of a linear matrix inequality is derived to determine the gains of the observer and the improved EID estimator. Since the devised Lyapunov functional is of a more general form than those in existing EID-based methods and the restrictive commutative condition is avoided in this design, the developed design method is less conservative. Finally, comparisons of the developed method with a sliding-mode control method for a matched disturbance and a conventional EID-based method for an unmatched disturbance illustrate the validity and superiority of the developed method.

    DOI

  • DEVELOPMENT AND OPERATION OF EXPANDABLE MICRO-GRID CLUSTERS BASED ON THE DESIGN FRAMEWORK, GRID OF GRIDS OPTIMAL DESIGNER

    Iwamura Kazuaki, Nakanishi Yosuke, Takamori Hiroshi, Nakanishi Yosuke, Lewlomphaisarl Udom, Estoperez Noel, Lomi Abraham

    Grand Renewable Energy 2018 International Conference and Exhibition    2018.06

  • A Study of Correlation of Wind Power Generation and Battery Allocation for Mitigation of Wind Farm's Fluctuation in Northern Part of Japan

    Motegi Fumiya, Iba Kenji, Nakanishi Yosuke

    International Conference on Electrical Engineering    2018.06

  • Location Optimization Method of Newly Installable Wind Farms

    Nishiyama Kohei, Ryo Kobayashi, Iwamura Kazuaki, Nakanishi Yosuke

    International Conference on Electrical Engineering    2018.06

  • Frequency-Constrained Unit Commitment Considering Battery Storage System and Forecast Error

    Nguyen Nhung Hong, Nakanishi Yosuke

    IEEE PES Innovative Smart Grid Technologies Conference Asia    2018.05

  • Enhancement of Disturbance-Rejection Performance of Uncertain Input-Delay Systems: A Disturbance Predictor Approach

    P. Yu, M Wu, J. She, K.Z. Liu, Y. Nakanishi

    IET Control Theory & Applications    2018.04  [Refereed]

    DOI

  • Unit Commitment considering Frequency Dynamic Constraint and Wind Power Forecast Uncertainties

    Nguyen Nhung Hong, Nakanish Yosuke

    IEEJ P&ESIEEE PES Thailand Joint Symposium    2018.03

  • Development of Small Signal Stability Model for Power Systems considering the Network Transients

    Nguyen Nhung Hong, Nguyen-Duc Huy, Nakanishi Yosuke

    IEEJ P&ESIEEE PES Thailand Joint Symposium    2018.03

  • Study on Transmission Pricing Method under Congested Transmission in Extendable Micro-Grid Clusters

    Morimoto Yusuke, Tanaka Akito, Takamori Hiroshi, Nakanishi Yosuke

    IEEJ P&ESIEEE PES Thailand Joint Symposium    2018.03

  • Multi-area State Estimation based on Detection of Bad Data and Analysis using M-estimator

    Miyake Shuhei, Magori Hideki, Iwamura Kazuaki, Nakanishi Yosuke

    IEEJ P&ESIEEE PES Thailand Joint Symposium    2018.03

  • Optimal Allocation Method for Introduction of a Large Amount of Wind Farms and Substations in Wind Farms

    Nishiyama Kohei, Iwamura Kazuaki, Nakanishi Yosuke

    IEEJ P&ESIEEE PES Thailand Joint Symposium    2018.03

  • An Improved Equivalent-Input-Disturbance Approach for Repetitive Control System With State Delay and Disturbance

    Pan Yu, Min Wu, Jinhua She, Kang-Zhi Liu, Yosuke Nakanishi

    IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS   65 ( 1 ) 521 - 531  2018.01  [Refereed]

     View Summary

    An improved equivalent-input-disturbance (EID) approach is devised to enhance the disturbance-rejection performance for a strictly proper plant with a state delay in a modified repetitive-control system. A gain factor is introduced to construct an improved EID estimator. This increases the flexibility of system design and enables the adjustment of the dynamical performance of disturbance rejection. Moreover, the commutative condition, which is widely used for the conventional EID estimator, is avoided. Thus, it reduces the conservativeness of design by removing the constraints imposed by the commutative condition. The system is divided into two subsystems, and the separation theorem is applied to simplify the design. For one subsystem, the delay information on both the modified repetitive controller and the plant is used to reduce the conservativeness of stability condition. The resulting linear matrix inequality (LMI) is used to find the gain of the state-feedback controller. Another LMI is derived to design the gains of the state observer and the improved EID estimator for the other subsystem. A case study on a metal-cutting system validates the superiority of the developed method.

    DOI

  • Stochastic Unit Commitment Considering Markov Process of Wind Power Forecast

    Nguyen, Nhung Hong, Nakanishi, Yosuke

    International Conference on Renewable Energy Research and Applications    2017.10

  • Optimal Transmission Planning in Wind Farm using Proposed K-means Clustering Method

    IEEJ P&ESIEEE PES Thailand Joint Symposium    2017.03

  • 調査研究委員会レポート:風力発電大量導入時の系統計画・運用・制御技術調査専門委員会

    中西 要祐, 安田 陽, 辻 隆男, 西尾 宣俊

    電気学会論文誌. B   137 ( 9 ) NL9_5 - NL9_5  2017

    DOI CiNii

  • Stochastic Dynamic Power Flow Analysis Based on Stochastic Response Surfarce Method and ARMA-GARCH Model

    Zhung Nguyen-Hong, Yosuke Nakanishi

    2017 IEEE POWER & ENERGY SOCIETY INNOVATIVE SMART GRID TECHNOLOGIES CONFERENCE (ISGT)    2017  [Refereed]

     View Summary

    Nowadays, renewable energy has become a very viable alternative solution to provide electricity. However, the uncertainty of renewable energy changes traditional issues in operation and control of power system. This paper proposes a Stochastic Dynamic Power Flow Analysis to evaluate state variables' probability distribution at any time t. Stochastic process of renewable energy is modeled and simulated by ARMA-GARCH model. The Stochastic Response Surface Method is also applied to increase computational efficiency with the same accuracy as Monte Carlo simulation. Stochastic Dynamic Power Flow Analysis is applied to IEEE 30-bus system and time dependent probability distribution of voltage, frequency and network loss will be analyzed.

  • Wind power generation

    Yosuke Nakanishi, Tetsuo Saito, Ryuichi Yokoyama

    Energy Technology Roadmaps of Japan: Future Energy Systems Based on Feasible Technologies Beyond 2030     307 - 322  2016.01

     View Summary

    Renewable energy, such as wind and photovoltaic power generation, is an attractive energy source to help solve global environmental issues surrounding the effects of greenhouse gases. Wind power ranks the largest among all renewable energy sources and offers the highest global market opportunity. In this chapter, the status and potential of wind power energy in Japan are described for onshore, fixed offshore, and floating offshore wind power. We discuss roadmaps for increased wind power penetration in Japan using technical countermeasures.

    DOI

  • Geospatial Approaches to Design of Wind Power Transmission Networks and Operation of Microgrids

    Kazuaki Iwamura, Yosuke Nakanishi, Yuya Kino, Go Sakaguchi, Ryusukc Kuno, Noriko Tanaka

    2016 IEEE INNOVATIVE SMART GRID TECHNOLOGIES - ASIA (ISGT-ASIA)     58 - 64  2016  [Refereed]

     View Summary

    In this study, we propose a four-dimensional geographic information system (4D-GIS) and present two of its applications. First, we introduce a mesh-type model of spatiotemporal data integration for 4D-GIS. The first application of the 4D-GIS is in the design of wind power transmission networks. In network design, 3D geospatial data and time change data are integrated as a cost surface; a combination of the genetic algorithm and a modified Prim search method generates power transmission networks that minimize the defined cost function. The second application is in operation support of clustered microgrids. The 4D-GIS is used in the visualization of power consumption changes in the microgrids. We also introduce a power information platform for processing big data, such as power consumption collected from buildings, homes, etc. The optimal configuration of power information platforms in microgrid clusters is also proposed.

    DOI

  • Study on the Current Analysis of a Transmission System with Wind Power Penetration Using Stochastic Power Flow Calculations

    Akihiko Sakai, Zuo Hu, Kazuaki Iwamura, Yosuke Nakanishi, Kenji Iba

    PROCEEDINGS OF THE 2016 IEEE REGION 10 CONFERENCE (TENCON)     884 - 887  2016  [Refereed]

     View Summary

    Wind generated power is one of the most promising forms of renewable energy and its penetration into power grids is expected to increase in future. For the large-scale penetration of wind farms, it is important to build transmission networks dedicated to wind power generation at low costs and assess the impacts of wind power on the existing transmission networks. For solving these challenges, it is necessary to determine the appropriate capacities of the power lines to be built, and to estimate the additional power flow in the existing lines.
    In this paper, we propose a current flow analysis method using stochastic power flow calculations and we apply this method to a model system that simulates the power system of Tohoku (the northeast region of Japan), First, we calculate the stochastic maximum current values of the transmission lines of the model system using this method. Next, we calculate the actual current values of the transmission lines of the model system using the measured data of the wind farms in Tohoku. Additionally, we evaluate the effectiveness of the proposed method by comparing the stochastic maximum current values with the actual current values.

    DOI

  • Optimal sizing of energy storage devices in wind-diesel systems considering load growth uncertainty

    Nhung Nguyen-Hong, Huy Nguyen-Due

    2016 IEEE INTERNATIONAL CONFERENCE ON SUSTAINABLE ENERGY TECHNOLOGIES (ICSET)     54 - 59  2016  [Refereed]

     View Summary

    Nowadays, wind energy has become a very viable alternative solution to provide electrical energy. The development of wind energy is especially relevant for the case of isolated island in the south central provinces of Vietnam, where there is great potential for wind energy. For these isolated systems, the cogeneration of diesel generators and wind turbines is a common configuration, but also poses several technical challenges. Auxiliary equipments such as battery storage, flywheel and dump loads are often needed to ensure a more stable operation, higher penetration level of wind energy. However, the cost for these auxiliary equipments can be substantial. This paper proposes an optimization framework to determine the optimal size of energy storage devices in a hybrid wind-diesel system. The optimization problem considers two main uncertain factors, which are the wind speed and the load growth rate.

    DOI

  • A Determination Method for the Optimal Operation of Controllable Generators in Micro Grids That Copes with Unstable Outputs of Renewable Energy Generation

    Hirotaka Takano, Peng Zhang, Junichi Murata, Takuhei Hashiguchi, Tadahiro Goda, Tatsuya Iizaka, Yosuke Nakanishi

    ELECTRICAL ENGINEERING IN JAPAN   190 ( 4 ) 56 - 65  2015.03  [Refereed]

     View Summary

    Micro grids are expected to be one of the most realistic energy systems for efficient use of renewable energy sources with few adverse effects on the main electric power grids. However, it is difficult to maintain the supply-and-demand balance because distributed renewable energy generation units (DREGs), such as photovoltaic generation systems and wind turbine generation systems, generate a significant portion of electrical energy in the micro grids. Therefore, an operation planning method is needed considering the uncertainty in weather prediction in order to ensure stable micro grid operations. This paper presents an optimization method for operation plans of controllable generators in micro grids that copes with the uncertainty of DREG outputs. In the proposed method, the optimal operation plans are determined by, depending on the problem conditions, either an enumeration method or Tabu Search with preprocessing. Numerical simulations were carried out for a micro grid model in order to verify the usefulness of the proposed method. In the simulations, the daily operation plan and the modified half-hourly one were determined by the proposed method. As a result, we could obtain the optimal plans which had enough reserve margins for coping with the fluctuations caused by DREGs and demand. (C) 2014 by Wiley Periodicals, Inc.

    DOI

  • An Online Estimation of Actual Load and PV Output in Distribution System with PV Actual Activated Capacity Estimating Method

    Ishibashi Naoto, Iizaka Tatsuya, Katsuno Tohru, Nakanishi Yosuke, Kimura Yuya, Takayama Satoshi, Ishigame Atsushi

    IEEJ Transactions on Power and Energy   135 ( 1 ) 35 - 41  2015

     View Summary

    This paper presents an online method for estimating actual load and photovoltaic generation (PV) output in distribution system with PV actual activated capacity estimation. In recent years, it is planned to introduce the renewable energy on a large scale into the power system in order to achieve the low carbon society. However, PV has a negative effect on the distribution system. When PV is introduced on a large scale into distribution system, it is difficult to know accommodating amount of load in accident restoration. Because measured load contains load in consumers and PV output. Thus, it is necessary to estimate actual load and PV output online in distribution system. This paper proposes the hybrid method of independent component analysis (ICA) and PV actual activated capacity estimating method. The former has new formulation that is inputted active power of load and insolation. The latter estimates PV actual activated capacity from results of ICA. The effectiveness of the proposed method is demonstrated using actual data of load in consumers that is regulated reactive power. The proposed method can estimate actual load and PV output more accurately than a conventional method. Moreover, the proposed method can estimate them accurately even if load is changed rapidly.

    DOI CiNii

  • 変電所パワーエレクトロニクス機器(FACTS)のデータモデルTF活動について)

       2014.09

  • Cost Minimum Transmission Planning for Large Scale Introduction of Wind Farms by Tabu Search

       2014.06

  • Control technologies for renewable energy integration

    Nakanishi Yosuke

    ICEE2014    2014.06

  • Next steps for Japan:Smart Community Demonstration in Kitakyushu

    Nakanishi Yosuke

    ISGAN (Clean Energy Ministeria)Web Seminor    2014.05

  • Kitakyushu smart community & technologies

    Nakanishi Yosuke

       2014.02

  • Considerations of the optimization planning of power lines in the Wind Firm

    IEEE PES Innovative Smart Grid Technologies Conference Europe    2014.02

  • A Wind Power Forecasting Method and Its Confidence Interval Estimation

    Tatsuya Iizaka, Toru Jintsugawa, Hideyuki Kondo, Yosuke Nakanishi, Yoshikazu Fukuyama, Hiroyuki Mori

    ELECTRICAL ENGINEERING IN JAPAN   186 ( 2 ) 52 - 60  2014.01  [Refereed]

     View Summary

    This paper describes a wind power forecasting method and its confidence interval estimation. Recently, flat control of wind power generators using various batteries has been required. In flat control, accurate wind power forecasts and their error confidence intervals are needed. In this paper, wind speed forecasts are calculated by regression models using Grid Point Value (GPV) weather forecasts. The forecasts are adjusted by fuzzy inference using the latest errors. The wind power forecasts are translated from the wind speed forecasts using two power curves. The power curves are selected or combined by fuzzy inference depending on the wind direction. The error confidence interval models are generated for each forecasting target time. Each confidence interval is combined by the other fuzzy inference. The proposed methods were applied to actual wind power generators, and it was found that the forecasting errors were smaller than in the conventional methods. Almost all of the forecasts can be within the error confidence intervals estimated by the proposed methods. The results show the effectiveness of the proposed methods. (c) 2013 Wiley Periodicals, Inc.

    DOI

  • Development of Demand and Supply Control System for Micro Grid

    Hayashi Naoki, Shimasaki Yuuichi, Kondo Hideyuki, Osada Yuuto, Iizaka Tatsuya, Katsuno Tohru, Nakanishi Yosuke

    IEEJ Transactions on Power and Energy   134 ( 1 ) 40 - 48  2014

     View Summary

    This paper describes a newly developed demand and supply control system for micro grid. Renewable energy is expected to reduce green house gases and becomes widely used in the world. By contrast, fluctuated power output from renewable energy may affect the power systems, especially frequency. The demand and supply control system for micro grid is expected to reduce it. The developed system consists of 4 control layers. The first layer is a planning of demand and supply every 30 minutes until next day. The second layer is an economic dispatch control (EDC) every 1 minute. The third layer is a load frequency control (LFC) every 1 second. The last layer is battery local control every 0.1 second. The developed system can control frequency stably against fast change of renewable energy output, and can operate generators economically by cooperating EDC and LFC, and using battery local control. Moreover, the battery can be operated systematically by managing battery states of charge (SOC). The developed system is verified using a real time digital simulator with promising results.

    DOI CiNii

  • A Determination Method for the Optimal Operation of Controllable Generators in Micro Grids that Copes with Unstable Outputs of Renewable Energy Generation

    TAKANO Hirotaka, ZHANG Peng, MURATA Junichi, HASHIGUCHI Takuhei, GODA Tadahiro, IIZAKA Tatsuya, NAKANISHI Yosuke

    IEEJ Transactions on Electronics, Information and Systems   133 ( 10 ) 1897 - 1904  2013.10

     View Summary

    Micro grids are expected to be one of the most useful energy systems in terms of efficient use of renewable energy sources with few adverse effects on the main power grids when the micro grids are operated properly from the viewpoint of balancing the electric power supply and demand. However, it is difficult to maintain the supply-and-demand balance because distributed renewable energy generation (DREG), such as photovoltaic generation systems (PVs) and wind turbine generation systems (WTs), account for a large percentage of the generators in the micro grids. Therefore, an operation planning method considering the uncertainty of prediction is needed for ensuring a stable grids operation. This paper presents an optimization method for operating plans of controllable generators in micro grids that copes with the uncertainty of DREG's outputs. In the proposed method, the optimal operating plans are obtained by using an enumeration method or a preconditioned tabu search (TS). Numerical simulations are carried out for a micro grid model in order to verify the usefulness of the proposed method.

    DOI CiNii

  • 風力発電と電力系統の融和-潜在的な大容量風力電源の導入に向けた送電線計画-

    酒井 明彦, 中西 要祐, 伊庭 健二

    日本風力発電協会雑誌    2013.08

  • Optimal Generation Schedule of Micro-Grids Considering the Uncertainties of Forecasts

    P. Zhang, H. Takano, J. Murata, T. Iizaka, Y. Nakanishi

    Proc. of the 17th International Conference on Intelligent System Applications to Power Systems   826  2013.07  [Refereed]

  • An Insolation Forecasting Method by Partial Least Squares and a Confidence Interval Estimating Method

    ISHIBASHI Naoto, IIZAKA Tatsuya, OHIRA Ryoko, NAKANISHI Yosuke

    IEEJ Transactions on Power and Energy   133 ( 1 ) 64 - 71  2013.01

     View Summary

    This paper presents an insolation forecasting method using numerical weather forecasting data and a confidence interval estimating method. It is planned to introduce photovoltaic (PV) system on a large scale into the power system in order to achieve the low carbon society. Thus, it is necessary to forecast the insolation and evaluate the confidence interval in terms of power system operating and planning. This paper proposes the insolation forecasting method by Partial Least Squares (PLS) and the confidence interval estimating method considering the forecasting error distributions. PLS handles multicollinear data among input variables in order to construct proper forecasting models. The proposed method can estimate continuous confidence intervals by linearly-approximating for representative values of some weather conditions extracted features from forecasting error distributions. The effectiveness of the proposed method is demonstrated using numerical weather forecasting data and actual data observed by Japan Meteorological Agency. The proposed method by PLS can forecast the hourly insolations more accurately than conventional multiple regression equation. Moreover, the proposed method can evaluate continuous confidence interval.

    DOI CiNii

  • A Determination Method for the Optimal Operation of Controllable Generators in a Micro Grid that Copes with Unstable Outputs of Renewable Energy Generation

    TAKANO Hirotaka, MURATA Junichi, ZHANG Peng, HASHIGUCHI Takuhei, GODA Tadahiro, IIZAKA Tatsuya, NAKANISHI Yosuke

      2012 ( 76 ) 69 - 74  2012.08

    CiNii

  • A Wind Power Forecasting Method and Its Confidence Interval Estimation

    IIZAKA Tatsuya, JINTSUGAWA Ryo, KONDO Hideyuki, NAKANISHI Yousuke, FUKUYAMA Yoshikazu, MORI Hiroyuki

    IEEJ Transactions on Electronics, Information and Systems   131 ( 10 ) 1672 - 1678  2011.10

     View Summary

    This paper describes a wind power forecasting method and its confidence interval estimation. Recently, flat control of wind power generators by various batteries is required. For the flat control, accurate wind power forecasts and their error confidence intervals are needed. In this paper, wind speed forecasts are calculated by regression models using GPV (Grid Point Vale) weather forecasts. The forecasts are adjusted by the fuzzy inference using the latest errors. The wind power forecasts are translated from the wind speed forecasts using two power-curves. The power-curves are selected or combined by fuzzy inference depending on wind direction. The error confidence interval models are generated for each forecasting target time. Each confidence interval is combined by the other fuzzy inference.<br>The proposed methods are applied to actual wind power generators, and found that forecasting errors are better than the conventional methods. The almost all of forecasts can be within error confidence intervals estimated by the proposed method. The results show the effectiveness of the proposed methods.

    DOI CiNii

  • Simulation Methods for Distribution Power Systems

    Nakanishi Yosuke

    IEEJ Transactions on Sensors and Micromachines   122 ( 9 ) 965 - 968  2011.10

     View Summary

    Deregulation in power systems has created many technological challenges encouraging the intereconnection of dispersed generators (DG) and the changes of the operation in distribution power systems. Therfore more sophiscated analysis and operation of power systems will be expected regarding the impacts and power quality in association with such situations. This article discribes the new trend of simulation methods applied for distribtion power systems.

    DOI CiNii

  • A Study on the Unit Commitment Method for a Small Isolated Power System Considering Forecast Error of Intermittent Renewable Energy

    OKADA Shinya, SHIMA Koji, SASAKI Yutaka, ZOKA Yoshifumi, YORINO Naoto, NAKAZAWA Chikashi, NAKANISHI Yosuke

      2011 ( 1 ) 41 - 46  2011.01

    CiNii

  • Thermal Unit Scheduling for CO2 Reduction including Significant Wind Power Penetration

    D. Yamashita, T. Niimura, R. Yokoyama

    2011 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING    2011  [Refereed]

     View Summary

    In this paper, we present a method to determine the unit commitment schedules considering CO2 emission and cost including the frequency regulation capability of the units to mitigate fluctuation of wind power. The authors developed an extended procedure that obtains a trade-off solution of cost versus CO2 emission including a significant wind power penetration. The method has been tested on the 10-unit 24-hour model system using the estimated wind power curve derived from an actual wind farm. The results, such as the shadow prices of CO2 obtained by the trade-off analysis, may provide a basis of evaluating the equivalent cost of the wind farms and their contribution toward CO2 reduction.

    DOI

  • A Study on the Unit Commitment Program considering on Small Independent Power System

    SASAKI Yutaka, OKADA Shinya, SHIMA Koji, ZOKA Yoshifumi, YORINO Naoto, NAKAZAWA Chikashi, NAKANISHI Yosuke

      2010 ( 149 ) 7 - 12  2010.09

    CiNii

  • Development of the Power Supply/Demand Control System for Isolated Small Power System

    YORINO Naoto, SASAKI Yutaka, NAKAZUMI Mamoru, ISEKI Tomohiro, ZOKA Yoshifumi, NAKAZAWA Chikashi, NAKANISHI Yosuke

      2010 ( 77 ) 143 - 148  2010.09

    CiNii

  • Development of the Dynamic Economical Load Dispatching Method for an Isolated Small Power System : Consideration of Network Constraints

    SASAKI Yutaka, YORINO Naoto, OHIRA Akifumi, ZOKA Yoshifumi, NAKAZAWA Chikashi, NAKANISHI Yosuke

      2010 ( 149 ) 1 - 6  2010.09

    CiNii

  • Reference governer for output smoothing of natural energy generation

    TSUBOTA Yutaka, UCHIDA Kenko, JINTSUGAWA Toru, NAKANISHI Yosuke

      2010 ( 148 ) 101 - 106  2010.09

    CiNii

  • AN INTRODUCTION EFFECT EVALUATION TOOL FOR DISTRIBUTED GENERATORS

    Hiroshi Kojima, Tohru Katsuno, Yosuke Nakanishi, Yoshikazu Fukuyama, Hideki Matsuda, Yasuhisa Kanazawa

    PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON POWER ENGINEERING 2009 (ICOPE-09), VOL 2     371 - 376  2009  [Refereed]

     View Summary

    This paper presents practical distribution system equipment models such as various distributed generators, voltage regulators, and loads for fast three phase unbalanced load flow calculation in distribution systems. The method can calculate voltage and current of distribution systems, in which distributed generators are introduced. The calculation time of the proposed method is about 40 times faster than that of the Newton-Raphson method. Moreover, an introduction effect evaluation tool for distributed generators using the proposed three phase unbalanced load flow calculation is presented. It provides various functions such as power system network diagram creation function and voltage profile chart display function. Therefore, the introduction effect evaluation of distributed generators in distribution systems can be evaluated quite easily.

  • Control scheme for wind power fluctuation using the hybrid batteries system

    NAKANISHI Yosuke, KUWAYAMA Jinpei, ASANUMA Keiji, OKAZAKI Akihito, MITANI Katsura, SUGIMOTO Kazushige

      2008 ( 12 ) 19 - 24  2008.01

    CiNii

  • Stability Estimation of SVCs in Distribution Systems

    SHIMIZU Keiichi, GENJI Takamu, NAKAZAWA Chikashi, NAKANISHI Yosuke

    IEEJ Transactions on Power and Energy   125 ( 5 ) 521 - 529  2005.05

     View Summary

    This paper presents stability and an interactive phenomenon of one SVC, two or more sets of SVC, a SVC and a SVR in distribution systems. In particular, we focus on the saddle-node bifurcation and Hopf bifurcation points. The two local bifurcation points show a boundary of a stable domain.

    DOI CiNii

  • Interaction of a dispersed generation, SVC, and SVR in Distribution Systems

    SHIMIZU Keiichi, GENJI Takamu, MIYAZATO Kenji, NAKAZAWA Chikashi, NAKANISHI Yosuke

      2003 ( 139 ) 49 - 54  2003.09

    CiNii

  • 電力品質ソリューションとそれを支える技術 (エネルギーソリューション特集)

    中西 要祐, 湯谷 浩次, 仁井 真介

    富士時報   75 ( 11 ) 634 - 639  2002.11

    CiNii

  • Comparative study of modern heuristic algorithms to service restoration in distribution systems

    S Toune, H Fudo, T Genji, Y Fukuyama, Y Nakanishi

    IEEE TRANSACTIONS ON POWER DELIVERY   17 ( 1 ) 173 - 181  2002.01  [Refereed]

     View Summary

    This paper presents a comparative study for four modern heuristic algorithms (MHAs) to service restoration in distribution systems: reactive tabu search, tabu search, parallel simulated annealing, and genetic algorithm. Since service restoration is an emergency control in distribution control centers to restore out-of-service areas as soon as possible, it requires fast computation and high quality solutions for customers' satisfaction. The problem can be formulated as a combinatorial optimization problem to divide the out-of-service area to each power source. The effectiveness of the MHAs is compared against each other on typical service restoration problems.

  • A particle swam optimization for reactive power and voltage control considering voltage security assessment

    Yoshida Hirotaka, Kawata Kenichi, Fukuyama Yoshikazu, Nakanishi Yosuke

    IEEE Transactions on Power systems   15 ( 4 )  2002.01

  • Simulation Methods for Distribution Power Systems

    Nakanishi Yosuke

    IEEJ Transactions on Power and Energy   122 ( 9 ) 965 - 968  2002

     View Summary

    Deregulation in power systems has created many technological challenges encouraging the intereconnection of dispersed generators (DG) and the changes of the operation in distribution power systems. Therfore more sophiscated analysis and operation of power systems will be expected regarding the impacts and power quality in association with such situations. This article discribes the new trend of simulation methods applied for distribtion power systems.

    DOI CiNii

  • 分散型電源連系系統の解析技術 (電力流通ソリューション特集)

    中西 要祐, 小島 武彦, 仁井 真介

    富士時報   74 ( 12 ) 659 - 662  2001.12

    CiNii

  • 並列処理による電力系統の高速信頼度評価技術 (シミュレーション技術特集)

    北川 慎治, 福山 良和, 中西 要祐

    富士時報   74 ( 6 ) 361 - 364  2001.06

    CiNii

  • Application of reactive tabu search for service restoration in distribution systems and its comparison with the genetic algorithm and parallel simulated annealing

    Hiroyuki Fudo, Sakae Toune, Takamu Genji, Yoshikazu Fukuyama, Yosuke Nakanishi

    Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)   133 ( 3 ) 71 - 82  2000.11  [Refereed]

     View Summary

    Service restoration in distribution systems can be formulated as a combinatorial optimization problem. It is the problem to determine power sources for each load considering various operational constraints in distribution systems. Up to now, the problem has been dealt with using conventional methods such as the branch and bound method, expert systems, neural networks, and fuzzy reasoning. Recently, modern heuristic methods such as genetic algorithms (GA), simulated annealing (SA), and tabu search (TS) have been attracting notice as efficient methods for solving large combinatorial optimization problems. Moreover, reactive tabu search (RTS) can solve the parameter tuning problem, which is recognized as the essential problem of the TS. Therefore, RTS, GA, and SA can be efficient search methods for service restoration in distribution systems. This paper develops an RTS for service restoration and compares RTS, GA, and PSA (parallel SA) for the problem. The feasibility of the proposed methods is shown and compared on a typical distribution system model with promising results.

    DOI

  • Analysis on Requirements of Islanding Detection Systems for Distributed Induction Generators

    NAKAZAWA Chikashi, NAKANISHI Yosuke

    IEEJ Transactions on Power and Energy   120 ( 5 ) 678 - 685  2000.05

     View Summary

    Islanding of induction generators for wind power generation systems can cause a variety of problems and must be prevented islanding. In Japan, Ministry of International Trade and Industry (MITI) revised &ldquo;technical requirements for distributed generators on distribution systems&rdquo; in 1998. The technical requirements do not require islanding detection systems for wind power generation systems consist of induction generators. However, if reactive power of induction generators and capacitors of distribution systems are closely matched, the islanding detection by ordinary relays becomes difficult because of self-excited of induction generators. In this paper, frequency of induction generators after theirs disconnection from grids, so called the self-excited frequency, is studied by analytical procedures. The analytical procedures and related simulations, using the Electro-Magnetic Transients Program (EMTP) and Transient Network Simulator (TNS), are described. The analytical results are presented and compared with the corresponding obtained simulation results.

    DOI CiNii

  • A Study on Improvement of Voltage Characteristics in Distribution Systems Interconnected with Distributed Generation Systems:A Stochastic Approach

    Yamamoto Fumio, Kitamura Akio, Fujita Nobufuyu, Nakanishi Yosuke, Nagasawa Makoto

    IEEJ Transactions on Power and Energy   120 ( 10 ) 1239 - 1247  2000

     View Summary

    In the near future, many distributed generation systems, such as photovoltaic or wind power generation, will be interconnected to the electric power distribution systems of Japan. Therefore, we must make the best use of the distributed generation systems considering their influence on power quality, stability, and so on.<br> This paper investigates the influence of distributed generation systems on the voltage characteristics in distribution systems by a stochastic approach. Firstly, we calculate the node voltage fluctuations in a test distribution system using the stochastic power flow, and show that the voltage characteristics deteriorate after interconnecting distributed generation systems. Secondly, we formulate the problem of voltage characteristics improvement as the nonlinear optimization problem which has the following objective functions: 1) minimize the total voltage fluctuations throughout a distribution system; 2) regulate the node voltage at a specified value considering voltage fluctuations. These problems can be also solved using the stochastic power flow. The simulation results show that the node voltage fluctuations can be minimized by controlling the parameters regarding the reactive power of distributed generation systems, and the stochastic power flow is effective in calculating the practical value of reactive power of distributed generation systems in order to regulate the node voltage.

    DOI CiNii

  • Annual review of editorial committee activities

    Editorial committee of P&E society

    IEEJ Transactions on Power and Energy   119 ( 10 ) 1013 - 1015  1999.10

    DOI CiNii

  • A Fast Contingency Analysis by Distributed Parallel Processing

    KITAGAWA Shinji, FUKUYAMA Yoshikazu, NAKANISHI Yosuke

      1999 ( 151 ) 65 - 70  1999.09

    CiNii

  • Measurements and Simulations of Behavior of Distributed Generator in distribution system

    SHIMIZU Keiichi, TOHNE Sakae, GENJI Takamu, NAKANISHI Yosuke, ODA Toshiyuki

      1999 ( 134 ) 49 - 54  1999.09

    CiNii

  • A study on An Optimal Control Problem for TCUL Transformers

    YORINO Naoto, NISHIMOTO Masaomi, SASAKI Hiroshi, SUGIHARA Hiroaki, SHUTO Takanori, NAKANISHI Yosuke

      1999 ( 119 ) 1 - 6  1999.09

    CiNii

  • Development of Equipment Models for Fast Distribution Load Flow Calculation Considering Interconnection of Distributed Generators

    TOHNE Sakae, GENJI Takamu, YURA Toshiki, FUKUYAMA Yoshikazu, WATANABE Takuya, NAKANISHI Yosuke

      1999 ( 103 ) 49 - 54  1999.09

    CiNii

  • AN APPLICATION OF REACTIVE TABU SEARCH FOR SERVICE RESTORATION IN DISTRIBUTION SYSTEMS AND ITS COMPARSION WITH GENETIC ALGORITHM AND PARALLEL SIMULATED ANNEALING

    Fudo Hiroyuki, Toune Sakae, Genji Takamu, Fukuyama Yoshikazu, Nakanishi Yosuke

    IEEJ Transactions on Power and Energy   119 ( 3 ) 317 - 325  1999

     View Summary

    Service restoration in distribution systems can be formulated as a combinatorial optimization problem. It is the problem to determine power sources for each load considering various operational constraints in distribution systems. Up to now, the problem has been dealt with using conventional methods such as branch and bounds method, expert system, neural networks, and fuzzy reasoning.<br> Recently, modern heuristic methods such as Genetic Algorithms (GA), Simulated Annealing (SA), and Tabu Search (TS) are noticed as efficient methods for solving large combinatorial optimization problems. Moreover, Reactive Tabu Search (RTS) can solve the parameter tuning problem, which is recognized as the essential problem of the TS. Therefore, RTS, GA, and SA can be efficient search method for service restoration in distribution systems.<br> This paper develops a reactive tabu search (RTS) for service restoration and compares RTS, GA, and PSA (Parallel SA) for the problem. The feasibility of the proposed methods is shown and compared on a typical distribution system model with promising results.

    DOI CiNii

  • A Distributed Autonomous Control Method for TCUL Transformers Using a Fuzzy Adaptive Control Scheme

    Yorino Naoto, Shuto Takanori, Nishimoto Masaomi, Sasaki Hiroshi, Sugihara Hiroaki, Nakanishi Yosuke

    IEEJ Transactions on Power and Energy   119 ( 12 ) 1455 - 1461  1999

     View Summary

    This paper proposes a new distributed autonomous control method for tap change under load (TCUL) transformers. Using a fuzzy control scheme, we realize advantageous control characteristics which inherit both the reliability of the conventional control scheme and the optimality of the control actions of distributed controllers, where the index derived from the optimization problem is used to minimize the voltage deviations and the number of tap operations. To increase the performance of control, a voltage prediction algorithm in each controller and then the data exchange scheme among controllers is adopted to consist an adaptive control scheme. Effectiveness of the proposed method is demonstrated through numerical simulations using an equivalent system made from a real system data.

    DOI CiNii

  • A Particle Swarm Optimization for Reactive Power and Voltage Control Considering Voltage Security Assessment

    Yoshida Hirotaka, Kawata Kenichi, Fukuyama Yoshikazu, Takayama Shinichi, Nakanishi Yosuke

    IEEJ Transactions on Power and Energy   119 ( 12 ) 1462 - 1469  1999

     View Summary

    This paper presents a particle swarm optimization for reactive power and voltage control (VQC) problem formulated as a mixed integer nonlinear optimization problem (MINLP) considering voltage security assessment. The proposed method realizes loss minimization and determines VQC strategy with continuous and discrete control variables such as AYR operating values, OLTC tap positions, and amount of reactive power compensation equipment. The method also considers voltage security assessment using a continuation power flow and voltage contingency analysis technique when determining the control strategy. The feasibility of the proposed method for the problem is demonstrated and compared with reactive tabu search and enumeration method on practical power system models with promising results.

    DOI CiNii

  • A VOLTAGE REGULATOR MODEL FOR FAST DISTRIBUTION POWER FLOW

    FUKUYAMA Yoshikazu, NAKANISHI Yosuke

    IEEJ Transactions on Power and Energy   118 ( 6 ) 735 - 736  1998.06

    DOI CiNii

  • On Autonomous Decentralized Contorl of On-Load Tap-Changers

    Yorino Naoto, Fujimura Tsutomu, Uena Katsuhisa, Sugihara Hiroaki, Sugiyama Katunori, Nakanisi Yosuke

    IEEJ Transactions on Power and Energy   118 ( 6 ) 658 - 664  1998

     View Summary

    Previous voltage stability studies have shown that typical OLTC controls can cause oscillatory behaviors as wel as reverse controls in tap changing operations due to interactions among multiple OLTC controls. These phenomena are undesirable from the viewpoint of both economy and security of power system operations.<br> In this paper, to avoid the above undesirable phenomena as well as to realize suboptimal voltage profile agains voltage instability, we proposes a new control method to coordinate numerous OLTC controls existing in transmissim and distribution networks. The method is based on the autonomous decentralized control scheme. A fundamenta theory and some techniaues for this control scheme are proposed.

    DOI CiNii

  • On Autonomous Decentralized Control for coordinating quality of voltage and frequency of control action

    YORINO Naoto, UENA Katsuhisa, SASAKI Hiroshi, SUGIHARA Hiroaki, SUGIYAMA Katunori, NAKANISI Yosuke

      1997 ( 63 ) 69 - 74  1997.10

    CiNii

  • Evaluation and Analysis of Loss Minimization Conditions in Distribution Systems

    FUDO Hiroyuki, GENJI Takamu, NAKANISHI Yosuke, FUKUYAMA Yoshikazu, KUWAYAMA Jinpei, KUSAMA Satoru

      1997 ( 32 ) 7 - 12  1997.10

    CiNii

  • Application of Reactive Tabu Search for Network Reconfiguration in Distribution Systems

    FUDO Hiroyuki, GENJI Takamu, FUKUYAMA Yoshikazu, NAKANISHI Yosuke

      1997 ( 32 ) 1 - 6  1997.10

    CiNii

  • A Criteria for Reverse Control Action of TCUL Controls and Their Deactivation Timings

    Yorino Naoto, Fujimura Tsutomu, Sasaki Hiroshi, Sugihara Hiroaki, Nakanishi Yosuke

    IEEJ Transactions on Power and Energy   117 ( 9 ) 1238 - 1244  1997

     View Summary

    The dynamic behaviours of the TCUL controls are investigated from the viewpoint of the effect of control actions on voltage stability as well as on voltage regulations, taking into account the interference among the multiple control actions of TCULs. The Liapunov stability theorem is applied to a system having nonlinear voltage dependent loads to derive conditions for stability. We define the term &ldquo;reverse control action for multiple TCULs&rdquo; to indicate undesirable tap operations, where multiple controls as a whole cause the decrease in voltages of specific nodes, leading to voltage collapse, in spite of normal individual operations. A criterion to detect the phenomena is derived and then a new control strategy based on this criterion is demonstrated. In this demonstration, unsuitably acting TCULs are individually deactivated at their most effective timings to improve voltage stability. The effectiveness of the proposed criterion and its application to the deactivation control have successfully been confirmed through numerical simulations in a radial network with three cascaded TCUL transformers, where a specific area of a real system is reduced to form the example system.

    DOI CiNii

  • Application of Meta-heuristic techniques to Service Restoration in Power Distribution Systems

    FUKUYAMA Yoshikazu, NAKANISHI Yosuke, FUDO Hiroyuki, GENJI Takamu

      6   334 - 337  1996.10

    CiNii

  • Studies on a Loss Minimization Method in Distribution Systems

    FUDOU Hiroyuki, GENJI Takamu, FUKUYAMA Yoshikazu, NAKANISHI Yosuke

      1996 ( 60 ) 21 - 30  1996.09

    CiNii

  • FAST LOAD FLOW FOR RADIAL POWER SYSTEMS USING PARALLEL PROCESSING

    Fukuyama Yoshikazu, Nakanishi Yosuke

    IEEJ Transactions on Power and Energy   116 ( 1 ) 20 - 26  1996

     View Summary

    Load flow calculation is a basic tool for power system planning and control which include load flow analysis, voltage control, service restoration, network reconfiguration, and etc. In these applications, it is very important to solve the load flow problem as efficiently as possible.<br> This paper presents a fast load flow using parallel processing for radial power systems. The method can be applied to secondary systems and distribution systems. Since it uses only active and reactive power injection to main lines and laterals as state variables, reduction of number of state variables can be realized. Radial networks are mapped to the tree structure of parallel processor systems in the proposed method. The forward/backward sweep approach is realized by communication from a root processor to leaf processors and vice versa. Using the mapping scheme of the proposed method, each processor has to communicate with only neighboring processors. The proposed method is evaluated on various radial systems with promising results.

    DOI CiNii

  • 並列遺伝的アルゴリズムの負荷融通問題への適用

    福山 良和, 中西 要祐, 佐藤 進

    電気学会研究会資料. PE, 電力技術研究会   1995 ( 145 ) 89 - 98  1995.10

    CiNii

  • A Coordinated Control of Voltage and Reactive Power by Heuristic on Power Systems Modeling and Approximate Reasoning

    Nakanishi Yosuke, Yokoyama Ryuichi

    IEEE Transactions on Power systems   8 ( 2 )  1993.02

  • Confirmation of the Auto-Parametric Resonance Phenomena on an Analog-Type Power System Simulator and Promotion of Problem-Oriented Instrumentation Technique

    Tomiyama Katsuyuki, Nakanishi Yosuke, Tamura Yasuo

    IEEJ Transactions on Power and Energy   113 ( 11 ) 1274 - 1282  1993

     View Summary

    Auto-parametric resonance has not been detected nor observed in a real power system, probably because the problem-oriented instrumentation network is not available today. It has been confirmed by our research group from the viewpoint of theory, digital simulations, and artificial transmission system with rotating machines that the auto-parametric resonance may come out in a power system where certain types of resonance conditions are satisfied as when the initial transient impact such as line opening, generator tripping, and a line-to-ground fault has been applied.<br>The objective of this paper is to confirm the auto-parametric resonance phenomena on a large-scale advanced-type power system simulator (APSA) which features various functions which are very close to those of a real power system, and to promote the instrumentation techniques needed to record and analyze such infrequent phenomena.

    DOI CiNii

  • DEVELOPMENT OF POWER-SYSTEM SIMULATOR FOR RESEARCH AND EDUCATION

    Y TAMURA, E DAN, HORIE, I, Y NAKANISHI, S YOKOKAWA

    IEEE TRANSACTIONS ON POWER SYSTEMS   5 ( 2 ) 492 - 498  1990.05  [Refereed]

  • A Load Flow Calculation Method for III-Conditioned Power Systems

    Iwamoto Shinichi, Nakanishi Yosuke, Tamura Yasuo

    IEEJ Transactions on Power and Energy   100 ( 2 ) 109 - 115  1980

    DOI CiNii

  • On the Multiple Solutions Structure, Singularity Points and Existence Condition in the Load Flow Multiple Solutions Problera

    Nakanishi Yousuke, Yamada Kenji, Nagasawa Hiroshi, Iwamoto Shin-ichi, Tamura Yasuo

    IEEJ Transactions on Power and Energy   100 ( 6 ) 337 - 344  1980

    DOI CiNii

  • Robust Disturbance Rejection for Repetitive Control Systems with Time-varying Nonlinearities

    P. Yu, K.Z. Liu, M Wu, J. She, Y. Nakanishi

    International Journal of Robust and Nonlinear Control    [Refereed]

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Specific Research

  • 風力発電大量導入時の系統整備計画技術の高度化

    2017  

     View Summary

    設備計画テーマの一環で、確率計画法を用いた電力導入シナリオ問題について検討した。(1)確率計画法による複数シナリオの生成・風力発電や需要の不確実性をモデル化し運用シナリオを生成する確率計画方式を開発した。・風力発電の不確実性を考慮した確率ユニットコミットメント設備運用方式を開発した。(2) 風力導入シナリオと送電線設計への適用と実データによる評価地形、風速の実データを用いて風力発電有望領域を自動抽出する方式について開発した。今後、これらの成果は、設備設計・運用計画のための最適化シミュレーションソフトウエア(GGOD:Grid of Grids Optimal Designer)に適用していく。

 

Syllabus

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