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Research and Development of Algorithms for the Functioning of the Phase-to-Phase Overcurrent Protection Based on Data from Digital Transformers with Rogowski Coils for Overhead and Cable power Lines 35 kV

Research and Development of Algorithms for the Functioning o...

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2022 International Conference on Industrial engineering, Applications and Manufacturing, ICIEAM 2022

作者： Yablokov, Andrey Dvoynenkov, Mikhail Sharygin, Dmitry Kabakov, Pavel University Named after V.I. Lenin Ivanovo State Power Engineering Department of Electric Power Systems Automatic Control Ivanovo Russia Jsc 'RADIUS Avtomatika' Separate Structural Department Ivanovo Russia RTsoft - Smart Grid Jsc 'RTSoft' Ivanovo Russia

ISBN: (纸本)9781665483698

The development of microprocessor technology has led to the creation of new types of instrument transformers that were not previously used in the electric power industry. Their characteristics require additional study of existing relay protection and automation algorithms and allow to develop of new ones. However, serious theoretical and experimental studies in all possible operating modes should precede the using of such algorithms. This article describes some aspects of the implementation of overcurrent protection that receives information in digital form from Rogowski coils and resistive voltage dividers, considering the key features and advantages of these type of sensors. © 2022 IEEE.

关键词： Voltage dividers

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Studying the Influence of Working Fluid Temperature on the Performance of an Electrohydraulic Servo System in Dynamic Mode

Studying the Influence of Working Fluid Temperature on the P...

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Automatics and Informatics (ICAI), International Conference

作者： Stanimir Yordanov Krasimir Ormandzhiev Georgi Mihalev Krasen Kostov Veselin Mitev Department of Automation Information and Control Systems Technical University of Gabrovo Gabrovo Bulgaria Department of Power Engineering Technical University of Gabrovo Gabrovo Bulgaria

The paper examines the influence of the working fluid temperature on power losses in an electro-hydraulic servo system. The behavior of the system has been investigated under Proportional-Integral (PI) control at different working fluid temperatures and various control setpoints. An Adaptive PID controller has been synthesized, utilizing feedback from sensors to measure various system parameters (such as temperature, pressure, and RPM), and then adapting the parameters of the P, I, and D components of the controller based on this data to achieve optimal regulation.

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Large Language Model as a Catalyst: A Paradigm Shift in Base Station Siting Optimization

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IEEE Transactions on Cognitive Communications and Networking 2025年

作者： Wang, Yanhu Afzal, Muhammad Muzammil Li, Zhengyang Zhou, Jie Feng, Chenyuan Guo, Shuaishuai Quek, Tony Q. S. Shandong University School of Control Science and Engineering Jinan250062 China EURECOM Department of Communication Systems Sophia Antipolis06410 France Singapore University of Technology and Design Singapore487372 Singapore Kyung Hee University Department of Electronic Engineering Yongin17104 Korea Republic of

Traditional base station siting (BSS) methods rely heavily on drive testing and user feedback, which are laborious and require extensive expertise in communication, networking, and optimization. As large language models (LLMs) and their associated technologies advance, particularly in the realms of prompt engineering and agent engineering, network optimization will witness a revolutionary approach. This approach entails the strategic use of well-crafted prompts to infuse human experience and knowledge into these sophisticated LLMs, and the deployment of autonomous agents as a communication bridge to seamlessly connect the machine language based LLMs with human users using natural language. Furthermore, our proposed framework incorporates retrieval-augmented generation (RAG) to enhance the system's ability to acquire domain-specific knowledge and generate solutions, thereby enabling the customization and optimization of the BSS process. This integration represents the future paradigm of artificial intelligence (AI) as a service and AI for more ease. This research first develops a novel LLM-empowered BSS optimization framework, and heuristically proposes three different potential implementations: the strategies based on Prompt-optimized LLM (PoL), LLM-empowered autonomous BSS agent (LaBa), and Cooperative multiple LLM-based autonomous BSS agents (CLaBa). Through evaluation on real-world data, the experiments demonstrate that prompt-assisted LLMs and LLM-based agents can generate more efficient and reliable network deployments, noticeably enhancing the efficiency of BSS optimization and reducing trivial manual participation. © 2015 IEEE.

关键词： systems analysis

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Development of an Optimization Model for the Operating Modes of Heating Units under Conditions of Changing Energy Consumption Schedules 14

Development of an Optimization Model for the Operating Modes...

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14th International Conference Management of Large-Scale System Development, MLSD 2021

作者： Andryushin, Alexander V. Neklyudov, Alexey V. Yagupova, Julia Y. Novitsky, Dmitry A. Shklovsky, Yuri V. National Research University 'Moscow Power Engineering Institute' Department of Automated Control Systems for Thermal Processes Moscow Russia

ISBN: (纸本)9781665412308

The features of the mathematical model for optimizing the distribution of heat and electricity at a large CHP with a complex composition are considered. It is shown that when developing optimization models, it becomes necessary to calculate the optimization problem for different planning horizons. The requirements for the accuracy of the optimization model vary depending on the planning depth. Operational planning requires maximum precision. When planning for the medium term, forecast indicators are used that have a higher error. Therefore, the requirements for the optimization model can be less stringent. A detailed description of the components of the optimization model allows for high accuracy. In addition to accuracy, an important factor is the computational complexity or the time to find the optimal solution. Particular attention is paid to taking into account the amount of subcooling in network heaters when distributing the heat load between them. © 2021 IEEE.

关键词： Optimization

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PIEZOELECTRIC SHUNT DAMPING IN CRYOGENIC CONDITIONS: APPLICATION TO A FLEXURE-BASED MECHANISM 36

PIEZOELECTRIC SHUNT DAMPING IN CRYOGENIC CONDITIONS: APPLICA...

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36th Annual Meeting of the American Society for Precision engineering, ASPE 2021

作者： Ambaum, N. Vermeulen, J.P.M.B. Mokrani, B. Department of Mechanical Engineering Control Systems Technology group – Mechatronic Systems Design Eindhoven University of Technology Eindhoven Netherlands Mechatronics Department ASML Netherlands Veldhoven Netherlands

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Automation and measurement classes for power engineering students in the online-mode 44

Automation and measurement classes for power engineering stu...

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44th International Convention on Information, Communication and Electronic Technology, MIPRO 2021

作者： Merzlikina, E.I. Dolbikova, N.S. Kuznetsova, A.V. Farafonov, G.V. National Research University Moscow Power Engineering Institute Department of Automated Control Systems for Thermal Processes Moscow Russia

ISBN: (纸本)9789532331011

This paper considers online classes for power engineering students. The work embraces two subjects: automation in industry and power engineering and measurements and measuring instruments in power engineering. Both subjects have in common a very important thing from the online teaching and learning point of view. They have laboratory classes, during which students work with real control devices and measuring instruments, that is why it is rather challenging to organize the classes in the online mode. Besides the laboratory classes, the courses under consideration consist of lectures and term project consultations. Having completed the courses students take exams. This paper describes the experience the authors obtained in organizing the classes and teaching techniques that allowed them to provide their students with the necessary skills and knowledge. For the online classes, the authors used several software packages: Cisco Webex, Moodle, CODESYS, and some special programs developed in MPEI university. This paper also describes the results the authors obtained and the difficulties they faced. © 2021 Croatian Society MIPRO.

关键词： Students

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COF-derived porous nitrogen-doped carbon for removal of emerging organic contaminants and efficient uranium extraction from seawater

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Chemosphere 2024年 365卷 143354页

作者： Hou, Hairui Ma, Zixuan Wu, Dedong Wang, Xiangxue Yu, Shujun Zhang, Pan Ma, Xiaoying Fu, Dong MOE Key Laboratory of Resources and Environmental Systems Optimization College of Environmental Science and Engineering North China Electric Power University Beijing102206 China Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control Department of Environmental Science and Engineering North China Electric Power University Baoding071003 China

The development of adsorbents for efficient and highly selective seawater extraction of uranium was instrumental in fostering sustainable progress in energy and addressing the prevailing energy crisis. However, the complex background composition of the marine environment, including radionuclides, organic pollutants, and a large number of co-existing heavy metal ions, were non-negligible obstacles to the extraction of uranium from seawater. The present investigation successfully employed a self-templated approach to synthesize porous nitrogen-doped carbon (PNC) derived from COF, which exhibited tremendous potential as an adsorbent for pollutant removal in environmental treatment. LZU1@PNC not only retained the structural features of the original COF-LZU1, but also overcame the acid-base instability problem commonly found in COFs. Subsequently, the removal process of two typical water pollutants on the material was investigated using 2,4-DCP and [UO2(CO3)3]4-. The results demonstrated that LZU1@PNC exhibited superior removal performance for the target pollutants compared to COF-LZU1, owing to its larger specific surface area and abundant defect structure. After six desorption-regeneration cycles, LZU1@PNC still maintained a high removal rate of the target contaminants, demonstrating the stability of this material and its excellent recyclability. In addition, based on various characterization techniques, the removal mechanism of 2,4-DCP was presumed to be mainly electrostatic attraction, hydrogen bonding, and π-π stacking interactions. Conversely, the elimination process of [UO2(CO3)3]4- predominantly relied on surface complexation phenomena. The present investigation provided new perspectives and stimulated a broader study of other COF-derived carbon materials and their modifications as adsorbents for uranium extraction from seawater and other applications. © 2024 Elsevier Ltd

关键词： Uranium dioxide

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A DRL-enabled Adaptive Sparsity Promoting Wide-area Damping controller for power System with Time-delay and Packet Dropout

A DRL-enabled Adaptive Sparsity Promoting Wide-area Damping ...

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2023 Panda Forum on power and Energy, PandaFPE 2023

作者： Cao, Di Zhang, Guozhou Hu, Jiaxiang Hu, Weihao Huang, Yuehui Chen, Zhe State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems China Electric Power Research Institute Chengdu China School of Mechanical and Electrical Engineering University of Electronic Science and Technology of China Chengdu China Aalborg University Department of Energy Technology Aalborg Denmark

ISBN: (纸本)9798350321173

This paper proposes a deep reinforcement learning (DRL) based adaptive sparsity promoting wide-area damping controller for power system. Different from traditional fixed wide-area control structure, the proposed method employs DRL algorithm to identify the optimal sparsity promoting control structure and obtain corresponding parameter settings under different operating conditions considering the time-delay and packet drop. Simulation are carried out on 10-machine 39-bus system to demonstrate the effectiveness of the proposed approach. © 2023 IEEE.

关键词： Time delay

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The Automated Temperature Measuring System Based on Single-Dimensional Distributed Sensor

The Automated Temperature Measuring System Based on Single-D...

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2022 International Conference on Industrial engineering, Applications and Manufacturing, ICIEAM 2022

作者： Akhmetov, E.A. Belashova, E.S. Gashigullin, D.A. Kazan State Power Engineering University Division of Industrial Heat Power and Heating Systems Kazan Russia Kazan National Research Technical University Named after A. N. Tupolev - Kai Department of Computer Systems Kazan Russia Kazan National Research Technical University Named after A. N. Tupolev - Kai Department of Automated Design Systems Kazan Russia

ISBN: (纸本)9781665483698

The automated temperature measuring system based on a single-dimensional distributed sensor was created. The principle of an automated temperature measurement system based on a single-dimensional distributed sensor is innovative, as well as in demand from the point of view of reducing the cost of production. The developed system based on a single-dimensional distributed sensor can be used, for example, both in the field of robotics and in the field of flowmetry (when using it as a thermal anemometer). The proposed system includes a single-dimensional distributed sensor (SDDS) connected to a personal computer (PC) to obtain data about the measured environment using software (for example, LabVIEW). The system provides the measurement of the ambient temperature. Sensors based on the p-n junction are used. The system is operated using the software. There is a function to store temperature data. © 2022 IEEE.

关键词： Temperature measurement

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Study of the Shock Loads Effect on the Operation of Multi-Motor Electric Drives of a Rolling Mill with a Second-order Elastic Coupling 5

Study of the Shock Loads Effect on the Operation of Multi-Mo...

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5th IEEE International Conference on Modern Electrical and Energy System, MEES 2023

作者： Tytiuk, Valerii Kalinin, Alexey Druzhinin, Valeriy Kuznetsov, Vitalii Chornyi, Oleksii Busher, Victor Kryvyi Rih National University Department of Electromechanics Kryvyi Rih Ukraine Abylkas Saginov Karaganda Technical University Npjsc Department of Informative Computer Systems Karaganda Kazakhstan Karaganda Industrial University Npjsc Department of Power Engineering Temirtau Kazakhstan Ukrainian State University of Science and Technologies Department of the Electrical Engineering Dnipro Ukraine National University Institute of Electromechanics Energy Saving and Automatic Control Systems Kremenchuk Mykhailo Ostrogradskyi Kremenchuk Ukraine National University "odessa Maritime Academy" Dept. of Electrical Engineering and Electronics Odessa Ukraine

ISBN: (纸本)9798350359787

This paper presents a study for optimizing a hot rolling mill. The paper is devoted to the study of ways to reduce the effect of shock loads of synchronous electric drives of the roughing mill group on the relative lengthening of the metal strip in the inter-stand gap of the rolling stands of the finishing mill group. The elasticity of the metal strip in the inter-stand gap of the rolling mill has a significant impact on the movement of intercoupled multi-motor electric drives of the finishing mill group. Another crucial route of exposure that influences the motion of the electric drives within the finishing mill group involves the electromagnetic connection between the drives in the roughing and finishing mill groups. The impact of the electromagnetically connected circuits is evident through the effect of shock loads from synchronous electric drives on the angular velocity of the direct current electric drives within the finishing mill group. The characteristics of the electromagnetic communication circuit are established by the power grid arrangement and equipment specifications. To assess the quality of work of electric drives of the finishing mill group, it is proposed to use the relative lengthening of the metal strip in the inter-stand gap, which is an important indirect indicator of the quality of rolling. The mathematical model of a hot rolling mill that takes into account both the elasticity of the metal strip that connects the DC electric drives of the finishing group, and the electromagnetic coupling circuit that takes into account the impact loads of synchronous electric drives of the roughing group on the example of the mill 1700 of ArcelorMittal Temirtau JSC was proposed in this paper. Using the mathematical model developed in Simulink software using the methods of planning the experiment, regression models were obtained to establish the dependence of the parameters of overexcitation of a synchronous motor on the magnitude of the voltage sag in the no

关键词： Electric loads

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