Calculation of Electrostatically Induced Electric Fields in Human Models using a Two-step Process Method of Voxel-based Fast Multipole Surface Charge Simulation Method
論文No: ページ数: 10 日付: 2020/10/01
著者: 濱田 昌司（関西大学システム理工学部電気電子情報工学科）
キーワード : 静電誘導電界，数値人体モデル，低周波，表面電荷法，高速多重極法，2段階手法 electrostatically induced electric field，numerical human model，low frequency，surface charge simulation method，fast multipole method，two-step process method
As a numerical calculation technique of the electrostatically induced electric field in the human body by the commercial frequency AC electric field, we propose a two-step process method that employs the voxel-based surf ... more
Modeling of Water Trees based on Investigation of Water Tree Degradation of 6.6 kV XLPE Cable Subjected to Accelerated Water-treeing Test and Calculation of DC Leakage Current and AC Superposition Current and Estimation of AC Breakdown Voltage by Transien
The authors were able to generate a penetrated water tree in an extruded three layer (E-E type) 6.6 kV XLPE cable subjected to an accelerated water-treeing test, and measured DC leakage and AC superposition currents of t ... more
The seasonal behavior of one-dimensional periodic structure is validated. The structure has angular dependence of reflectivity that changes from high reflectivity for summer to low reflectivity for winter. Sunlight simul ... more
We developed a new Doppler probe array with two pairs of view-lines to measure 1D ion flow vector. Using this array, just two glass tube insertion enables us to measure 1D ion flow and temperature profile. By use of four ... more
Surface materials of spacecraft operated in low and medium earth orbits, such as positioning satellite and earth observation satellite, are charged and discharged duet to radio-active rays, such as electrons and protons. ... more
Space Charge and Conduction Current in Laminate Elastomer Sheets with Different Laminating Directions
論文No: ページ数: 2 日付: 2020/10/01
著者: Shinichi Mitsumoto (National Institute of Technology, Toyota College), Muneaki Kurimoto (Nagoya University), Masayuki Fujii (National Institute of Technology, Oshima College), Masumi Fukuma (National Institute of Technology, Matsue College), Len. A. Dissado (University of Leicester)
キーワード : conduction current，laminate elastomer sheets，different laminating direction，space charge
DC conduction current and space charge characteristics of laminate elastomer sheets with different laminating directions are investigated. Samples (N,V, H) were prepared as 3 types of the laminate elastomer sheets with d ... more
A new Phased Array Radar (PAR) system for meteorological application has been developed by Toshiba Corporation and Osaka University under a grant of NICT, and installed in Osaka University, Japan in 2012. The phased arra ... more
A capacitive-coupled magnetohydrodynamic (MHD) generator was demonstrated in a dense working fluid which was generated by a microwave discharge. In this study, the induction voltage from the capacitive-coupled MHD genera ... more
In recent years introduction of renewable energy (RE), such as photovoltaic (PV) power generation and wind power generation, has rapidly increased. Since output of the RE is affected by weather conditions, it will be dif ... more
Downsizing of distribution lines while maintaining feasibility of network reconfigurations would save monetary costs in a distribution system planning. In this study, we propose a method to find distribution lines with r ... more
Reactive Power Control of Photovoltaic Power Generation Systems by a Wide-Area Control System for Improving Transient Stability in Power Systems
論文No: ページ数: 11 日付: 2020/10/01
著者: 河辺 賢一（東京工業大学 工学院 電気電子系），七原 俊也（東京工業大学 工学院 電気電子系）
キーワード : 電力系統，過渡安定性，緊急制御，太陽光発電，無効電力制御 power system，transient stability，emergency control，photovoltaic power generation，reactive power control
As the installed capacity of renewable energy sources is increasing, the role of inverters is becoming more important in the maintenance of power system stability. Therefore, in this study, we propose the use of a wide a ... more
Connection Method of the High-voltage Cable-type Down-conductor for Reducing the Magnetic Field in Building
論文No: ページ数: 8 日付: 2020/10/01
著者: 宇野 佑太（名古屋工業大学），郷 顕宣（名古屋工業大学），安井 晋示（名古屋工業大学），土田 崇（（株）関電工 技術研究所）
キーワード : 高耐圧ケーブル，引下げ導線，建物内部磁界，安全離隔距離，FDTD法 high voltage cable，down conductor，building internal magnetic field，safe separation distance，FDTD method
We examined the connection method of the high-voltage cable to the structure for adopting the separate type down-conductor for reducing the internal magnetic field of building. In construction of high-voltage cable type ... more
Most indoor polymeric insulators are used for a long term over 30 years. Those insulators rarely fail due to partial discharge depending on the used material and installation environment. Therefore, we have been develope ... more
Surface charge accumulation on insulating epoxy spacer in DC-GIS under high DC electric field decreases breakdown voltage on the spacer, but charge accumulation phenomena of insulators are not clear in detail. In this pa ... more
Evaluation of Abnormal Conditions of Oil-impregnated Insulation Papers in Aged Oil-filled Cable Joints and Terminations Removed After Service and Proposal of Classification Method for Ranking of their Abnormal Conditions
Degradation rate of electrical insulation performance of oil-filled (OF) cables has been considered small since void-less conditions are realized due to their oil-impregnated insulation systems under insulation oil press ... more
Equal area criterion is frequently used as a means to assess transient stability. The method can be hardly applied to observed data because the method is based on rotor angles which need to be measured with specially dep ... more
We propose a shared taxi dispatching method that utilizes demand prediction information. In this method, a taxi picks up passengers if the delay of the arrival time of other passengers that use the same taxi is within th ... more
We propose a user interface for inducing communication of regional electronic coupon system. The proposed interface will be introduced at an event held for the purpose of revitalizing the shopping street. Three types of ... more
In this paper, we propose an efficient method of technical structure analysis of FPGA development using network analysis. Recently, with the reform of the industrial structure called “Industry 4.0” and the explosive expa ... more
The price of crops depends on the grade. The grade is determined from various factors such as color, shape, size, and scratches. It takes a lot of time and effort if farmers decide the grade. This study aims to automate ... more
Monte Carlo Tree Search Method for Solving the Knapsack Problem
論文No: ページ数: 6 日付: 2020/10/01
著者: 飯間 等（京都工芸繊維大学），兵野 拓海（京都工芸繊維大学）
キーワード : モンテカルロ木探索，ナップサック問題，最適化，メタヒューリスティックス Monte Carlo tree search，knapsack problem，optimization，meta-heuristics
Monte Carlo tree search is used in AlphaGo Zero which is a strong artificial intelligence player for Go, and therefore it has attracted much attention. It can be used for searching for the optimum of combinatorial optimi ... more
MES (Manufacturing Execution System) is often used in pharmaceutical industry to make manufacturing process sure. And, it brings higher quality products. On the other hand, it is difficult for pharmaceutical companies to ... more
Discussion of How to Reach a Root Failure Point in Open Systems Problem Using Function Chain
論文No: ページ数: 9 日付: 2020/10/01
著者: 篠原 昭夫（日本大学理工学部），泉 隆（日本大学理工学部）
キーワード : オープン系システム障害，障害原因調査，障害原因部位検出，機能線，補助機能線 open systems problem，root cause analysis，fault detection，function chain，auxiliary function chain
Discussion how to reach a root failure point in open systems problem. In most case, the analyzing process depends on the experiences of support engineers, but there is no known way for trouble shooting in such circumstan ... more
In this paper, we explore the ideal way of urban parks for a sustainable society. Urban park has many functions that make comfortable space in urban. Expanding urban areas and increasing population in urban bring some pr ... more
The microgrid system (MGS) is composed of various equipments such as photovoltaic, cogeneration, storage battery. The operation of MGS is complicated; therefore it is difficult to optimize the operation to control each f ... more
Electrical discharge and electrostatics are used for the industrial application of a copying machine and electrostatic spraying. However, the electrical discharge and electrostatics occasionally cause malfunction or fail ... more
Static electricity is used for industrial application of copiers etc. However, such applications could experience an electrostatic accident such as a malfunction or failure of the electronic device. For example, when a c ... more
論文No: ページ数: 8 日付: 2020/10/01
著者: 武田 泰弘（東京大学），田中 謙司（東京大学）
キーワード : 分散電源，P2P電力取引，再生可能エネルギー，マルチエージェントシステム Distributed Energy Resource (DER)，P2P energy trading，renewable energy，multi agent system
Recently, renewable energy is being widely used in Japan. The main reason for the widespread use of solar power generation is the feed-in tariff (FIT); however, the FIT program is reaching maturity for some households at ... more
In recent years, it has been established that the equipment of smart highways should be reliable. At present, telecommunication facilities are becoming obsolete, and urgent maintenance is required. Conservation is carrie ... more
The Load Control Processes for EiEvents of Demand Responces in BACS
論文No: ページ数: 7 日付: 2020/10/01
著者: 豊田 武二（豊田SI技術士事務所）
キーワード : BACS，FSGIM，OpenADR，BACnet，TESS，電力需給調整 BACS，FSGIM，OpenADR，BACnet，TESS，electrical power supply and demand adjustment
This paper describes the procedures of demand responses (DR) that are invoked in tight supply-demand situations for electrical power supply by using the procedure of Open ADR and FSGIM standardized by ASHRAE. The operati ... more
