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2024 3rd International Conference on New Energy, Energy Storage and power engineering, NESP 2024

作者： Ding, Yu Farrugia, Mario Peng, Yang Xiang, La Scerri, Kenneth College of Power and Energy Engineering Harbin Engineering University Heilongjiang Province Harbin150001 China Department of Mechanical Engineering University of Malta MSD Msida2080 Malta Technical Centre Henan Diesel Engine Industry Co. Ltd. Henan Province Luoyang471000 China Department of Systems and Control University of Malta MSD Msida2080 Malta

With the increasingly stringent IMO emission regulations, the diesel-natural gas dual-fuel engine is gradually applied to ship's power systems. However, the misfire and unconventional emissions of dual-fuel engines under low operation loads limit its application. In this study, a marine diesel/natural gas dual-fuel engine was used as a prototype to develop a 3D CFD simulation model using CONVERGE, which was then validated by using the experimental data under different operation loads. The validated model was used to study the effect of injection timing, intake temperature, and EGR rate on the combustion and emission characteristics under low operation loads soon afterward. The effects of different operating parameters on engine performance and emissions were determined by observing the formation of combustion intermediates and in-cylinder temperature variation. Results show that under small load conditions, advancing diesel injection timing and increasing intake temperature can reduce the emissions of HC and CO while improving the misfire phenomenon partly, but NOx increases. A larger EGR rate can effectively reduce NOx emissions but cause an increase in unconventional emissions. After optimization, the effective power increased by 5.9%, while the HC and CO emissions decreased by 33.1% and 35.2%, respectively. The misfire phenomenon under low operation loads has been significantly improved, thus providing theoretical support for the de sign and operation of dual-fuel engines. © Published under licence by IOP Publishing Ltd.

关键词： Dual fuel engines

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A Model of 6-10 kV power Three-Core Cable for the Research of ITS Heating-Up in Normal and Emergency Operating Modes 4

A Model of 6-10 kV Power Three-Core Cable for the Research o...

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4th International Youth Scientific and Technical Conference Relay Protection and Automation, RPA 2021

作者： Kutumov, D.Yu. Mizonov, V.E. Yu, Shadrikova T. Shuin, V.A. Ivanovo State Power Engineering University Automatic Control of Electrical Power Systems Department Ivanovo Russia

ISBN: (纸本)9781728192703

One of the most significant consequences of short circuits and single phase to earth faults in 6-10 kV cable networks is cable insulation heating, which provides its further deflagration and damage of neighboring power supply systems' elements, which steps up consequential injury. Cable lines overheating during current overload leads to rapid insulation deterioration and cable lines damage rate increasing;similarly, cable heating during single phase to earth faults leads to its transformation to phase-to-phase short circuit, which requires faulted cable line emergency shutdown by relay protection devices operation and, moreover, can aid in cable deflagration when it is installed inside cable tunnels. Reference documents contain several calculation methods for cable line temperature definition both in steady-state and transient modes [1,2]. The main disadvantages of these methods are sufficiently restricted application sphere (only for symmetrical modes) and impossibility for accurate records of thermal conductivity and other thermophysical and geometric parameters of the researched cable line and external environment (soil, air, etc). For the solution of this problem an approach, which was described by F.H. Van Wormer in the 1950s [3] and also mentioned in [4-6], exists. According to this approach, the heated cable line and external environment are presented in the form of equivalent RC-branches, which simulates the process of transition and accumulation of heat. Nevertheless, during composition of such models an issue of computational space size and appropriate sampling rate of elementary RC-branches definition occurs. The model of cable line and external environment on the basis of so-called 'Markov's chains' [for example, 5] is also the case of interest, because it will allow to research qualitative characteristics of the system 'cable line-the external environment' in the context of its electromagnetic heating. The main goal of this research is to compile a digi

关键词： Thermal conductivity

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Fault-Tolerant Current and Reactive power Predictive control in a Multi-Modular 2-Level Indirect Matrix Converter 50

Fault-Tolerant Current and Reactive Power Predictive Control...

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50th Annual Conference of the IEEE Industrial Electronics Society, IECON 2024

作者： Palacios-Pereira, Fabian Toledo, Sergio Maqueda, Edgar Caballero, David Rivera, Marco Rodas, Jorge Gregor, Raúl Laboratory of Power and Control Systems Faculty of Engineering Universidad Nacional de Asunción Luque Paraguay Department of Electrical and Electronic Engineering Faculty of Engineering University of Nottingham United Kingdom Laboratorio de Conversión de Energías y Electrónica de Potencia Universidad de Talca Chile Dept. of Research and Development Power Quality and Energy Solutions SRL Asunción Paraguay

ISBN: (纸本)9781665464543

This paper studied the design of a predictive current control strategy with fault tolerance and reactive power minimization applied to a multi-modular topology based on indirect 2-level matrix converters fed by a six-phase generator. The control algorithm of the proposed strategy involves coupled current signals to perform error compensation between the converter modules, aiming to address potential system faults while maintaining reactive power close to zero. The results, obtained through simulation, were evaluated considering each module’s input and output currents and the final load current, as well as reactive power minimization, incorporating the obtained values of total harmonic distortion and mean squared error. The behaviour was analyzed in steady-state and transient conditions, with the system operating nominally and under fault conditions. The results demonstrate the effectiveness and good performance of the proposed strategy with the utilized topology, achieving a satisfactory response to faults through compensation and constant reactive power minimization. © 2024 IEEE.

关键词： Predictive control systems

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Energy Management and Operational control Methods for Grid Battery Energy Storage systems

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CSEE Journal of power and Energy systems 2021年第5期7卷 1026-1040页

作者： Xiangjun Li Shangxing Wang State Key Laboratory of Control and Operation of Renewable Energy and Storage Systems Energy Storage and Electrical Engineering DepartmentChina Electric Power Research Institute.Beijing 100192China.

Energy storage is one of the key means for improving the flexibility,economy and security of power *** is also important in promoting new energy consumption and the energy ***,energy storage is expected to support distributed power and the micro-grid,promote open sharing and flexible trading of energy production and consumption,and realize multi-functional *** recent years,with the rapid development of the battery energy storage industry,its technology has shown the characteristics and trends for large-scale integration and distributed applications with multi-objective *** a grid-level application,energy management systems(EMS)of a battery energy storage system(BESS)were deployed in real time at utility control centers as an important component of power grid *** on the analysis of the development status of a BESS,this paper introduced application scenarios,such as reduction of power output fluctuations,agreement to the output plan at the renewable energy generation side,power grid frequency adjustment,power flow optimization at the power transmission side,and a distributed and niohile energy storage system at the power distribution *** studies and application status of a BESS in recent years were *** energy management,operation control methods,and application scenes of large-scale BESSs were also examined in the study.

关键词： Battery energy storage system(BESS) energy management systems(EMS) multi-objective collaborative control new energy integration power grid ancillary service.

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Application of Evolutionary Technique for Mapping onto Network on Chip 3rd

Application of Evolutionary Technique for Mapping onto Netwo...

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3rd International Conference on Recent Advances in Mechanical engineering Research and Development, ICRAMERD 2022

作者： Choudhury, Subhashree Das, A.S. Misra, Sarita Hossain, Ismail Dash, Taraprasanna Swain, Kaliprasanna Bhubaneswar India J Systems and Control Cuttack India Department of Electrical Engineering GITA Autonomous College Bhubaneswar India Department of Nuclear Power Plants and Renewable Energy Ural Federal University Yekaterinburg Russia Bhubaneswar India Department of Electronics and Communication Engineering GITA Autonomous College Bhubaneswar India

ISBN: (纸本)9789811994920

Network on Chip (NoC) is a communication subsystem between various IPs interconnected through an on-chip router inside a single chip. The on-chip interconnection infrastructure connects the different intellectual property (IP) with the help of various industry-standard high-performance (HPC) interconnection topologies. Also, the on-chip interconnection network facilitates the connection of more Processing Elements (PE) to enable deadlock-free scheduling and parallel processing. The present work addresses one important aspect of NoC which is "Optimal Mapping" which allows the participation of cores in an optimal way for achieving low bandwidth requirement, low latency hence greater throughput. To achieve the optical mapping, a Genetic Algorithm is proposed here for the optimization of NoC performance by employing 2D Mesh topology. The genetic algorithm produces consistent and comparable results at par with standard algorithms. A deterministic seeding and successive seeding would yield better results and consume less CPU time. The proposed result is marginally better than NMAP and PSMAP. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Network-on-chip

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A Collaboration Evaluation Method for Substation Protection and Monitoring System Based on G1 Method and Expert Investigation 3

A Collaboration Evaluation Method for Substation Protection ...

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3rd International Conference on New Energy and power engineering, ICNEPE 2023

作者： Yan, Yuxiang Deng, Xiongyao Yu, Xinyang Ma, Shizhong Xue, Ancheng Chang, Naichao Wang, Shenqiang Zhang, Long Li, Zhongqing Meng, Jiangwen Fan, Chen Teng, Jingyu Zheng, Jingrong North China Electric Power University Beijing China National Electric Power Dispatching and Control Center of State Grid Corporation of China Beijing China Beijing Sifang Engineering Co. Ltd. Beijing China China Electric Power Research Institute Beijing China China Electric Power Research Institute Power Automation Department Nanjing China Nari Technology Nanjing Control Systems Co. Ltd. Nanjing China

ISBN: (纸本)9798350393224

The substation is the core facility of the power system. The interaction and coordination of different equipment in the protection and monitoring system(PMS) directly affects the working efficiency and stable operation of the system. However, the current protection and monitoring system of substation(SPMS) generally lacks evaluation method for collaboration. To the above problems, this paper proposes an evaluation method for collaboration in S-PMS based on the G1 method. Firstly, according to the requirements of the coordination for PMS, the corresponding indicators are proposed to form the index system for evaluating the coordination. Then, combined with G1 method, a comprehensive collaboration evaluation model is constructed. Finally, the coordination of two different structures of substations is evaluated and analyzed, and the feasibility of the evaluation method is verified. © 2023 IEEE.

关键词： Collaboration evaluation G1 method Protection and monitoring system

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Prospects for Using of New Types of Current Transformers for Differential Protection for Transformers

Prospects for Using of New Types of Current Transformers for...

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International Conference on Industrial engineering, Applications and Manufacturing (ICIEAM)

作者： Andrey Yablokov Anton Panashatenko Andrey Tychkin Department of Electric Power Systems Automatic Control "ISPU" Ivanovo State Power Engineering University Ivanovo Russian Federation

The article is devoted to the analysis of the possibilities of improving the methodology for selecting the operation parameters of the longitudinal differential protection of a power transformer when using new types of current transformers such Rogowski Coils, optical current transformers (including digital ones) and their combinations with traditional current transformers. The results of studies of the characteristics of digital transformers are presented, also the heat, repeatability of construction and continuous operating conditions influence on it are shown. Based on anlysis for these studies possible improvements in the methodology for selecting the operation parameters of the differential protection of the transformer are proposed. These improvements can increse the sensitivity and reliability for differential transformer protection.

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Optimal Pole-Transition Current Distribution for Constant Torque Maintenance and Stator Copper Loss Minimization in Variable-Pole Machines

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IEEE Transactions on Transportation Electrification 2025年

作者： Lin, Xinpo Wu, Yixuan Olson, Gustaf Falk Liu, Jianxing Wu, Ligang Peretti, Luca Department of Control Science and Engineering Harbin Institute of Technology Weihai264200 China Division of Electric Power and Energy Systems Kth Royal Institute of Technology Stockholm10044 Sweden Department of Control Science and Engineering Harbin Institute of Technology Harbin150001 China

Variable phase-pole machines possess the capability to expand their operational range by employing magnetic pole change while adhering to the same electrical voltage and current limits. This paper proposes a strategy to achieve a pole change with constant torque while simultaneously optimizing current distributions for stator copper loss minimization. The overall outcome is the ability to facilitate smooth dq0 current transitions while reducing the energy consumption of variable phase-pole machine drives. Experimental results affirm the efficacy of this approach during the pole change process. © 2025 IEEE.

关键词： Electric machine control

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High-power LED Lamp Driver Modelling 7

High-Power LED Lamp Driver Modelling

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7th International Youth Conference on Radio Electronics, Electrical and power engineering, REEPE 2025

作者： Chukhraev, Igor V. Sevastyanova, Marina A. Drach, Vladimir E. Torkunova, Julia V. Bauman Moscow State Technical University Computer Science and Control Department Moscow Russian Federation Sochi State University Department of Innovative Engineering and Digital Technologies Sochi Russian Federation Kazan State Power Engineering University Department of Information Technologies and Intelligent Systems Kazan Russian Federation

ISBN: (纸本)9798331531836

The growing demand for energy-saving lamps highlights critical limitations in traditional LED secondary optics, which reduce energy efficiency and complicate heat dissipation - a key factor in LED lamp longevity. This study proposes an optimized circuit design for a 20-watt LED driver that addresses these issues. The proposed driver ensures effective LED control while improving thermal management and eliminating drawbacks of conventional designs. Key principles of modern LED lamp design and current challenges are identified. The electronic schematic of the high-power LED driver was simulated using LTSpice software in order to analyze and optimize the circuit's performance, resulting in a driver solution that enhances efficiency and reliability. © 2025 IEEE.

关键词： driver high-power LED lighting LTSpice Modeling schematics

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Using Model-Based Design to Improve the Performance of power Electronic Devices 10

Using Model-Based Design to Improve the Performance of Power...

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10th International Scientific Conference on Computer Science, COMSCI 2022

作者： Penev, Dimiter Hinov, Nikolay Technical University of Sofia Faculty of Automatics Department of Systems and Control Sofia Bulgaria Technical University of Sofia Faculty of Electronic Engineering and Technologies Department of Power Electronics Sofia Bulgaria

ISBN: (纸本)9781665497770

The paper presents a model-based approach to the design of power electronic devices. Ensuring the output performance of electronic converters is extremely important for achieving the desired quality of the energy conversion process. Modern methods for realization of electronic devices with guaranteed indicators require the use of a systematic approach in the process of realization of power electronic devices - from the stage of task formulation to the receipt of the final product. © 2022 IEEE.

关键词： Energy conversion

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