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Power Loss Analysis of Energy Management System with Model Predictive control in Mae Hong Son Microgrid 3

Power Loss Analysis of Energy Management System with Model P...

引用

3rd IEEE International Conference on Power Electronics, Intelligent control and Energy systems, ICPEICES 2024

作者： Prapanwattana, Nattakit Dechawatanapaisal, Donlapat Banjerdpongchai, David Rajan, Abhishek Center of Excellence in Intelligent Control Automation for Process Systems Chulalongkorn University Faculty of Engineering Dept. of Electrical Engineering 254 Phayathai Rd Bangkok Pathumwan10310 Thailand National Institute of Technology Sikkim Dept. of Electrical Engineering South Sikkim Ravangla737139 India

ISBN: (纸本)9798350387193

Energy management system (EMS) is an important tool for energy efficiency and reliability of the power system. The optimal power dispatch of energy resources can be obtained using the nonlinear model predictive control (NMPC). It is formulated as an optimization problem subject to linear and nonlinear constraints. Although the existing system works well under the current conditions, power loss has not been considered. Power loss in transmission lines occurs due to their resistance and a high amount of power flow to loads connecting to the system. The power loss leads to decreased efficiency in the electrical system and reduces the lifespan of equipment because of the high temperature from loss. This paper aims to analyze the power loss in the Mae Hong Son (MHS) microgrid. To achieve the research objectives, we employ the EMS of MHS with NMPC and calculate power loss in transmission lines for a period of 7 days. EMS considers three objective functions, namely, total operating cost, total carbon dioxide emission, and combined economic and emission dispatch and take into account of three seasons consisting of rainy, winter, and summer. © 2024 IEEE.

关键词： Predictive control systems

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A Local Distance Descriptor for 3D Point Clouds 5

A Local Distance Descriptor for 3D Point Clouds

引用

5th International Conference on Computer Vision and Computational Intelligence, CVCI 2024

作者： Li, Wei Mudiwa, Allen Zhang, Lu Dept. of Automation School of Electrical and Control Engineering SUST Xi’an China School of Liberal Arts XATU Xi’an China

ISBN: (数字)9781510680067

ISBN: (纸本)9781510680050

Extracting 3D features from point cloud data is the central component for the automatic repair system of ancient ceramic fragments developed by us. This paper presents a local 3D point clouds descriptor for individual point on various surfaces based on the distances among the point’s neighborhood, which providing feature extracting service to the system. The descriptor use the distance between the point with its k-neighborhoods, which are chosen by a adjustable search radius, to identify the surface type of the ceramic fragments. The descriptor then utilize and maintain the existed local distance information from some selected point to generate feature vectors for accurate point matching which will ease the restoration work. To validate the algorithm, experiments on real data are performed and compared with other similar descriptors. The results show that our descriptor can provide reliable identification performance and also do not introduce any local information loss. The descriptor are also a non-geometric deformation operation, so it has the potential to be a commonly used intermediate algorithm in many point cloud applications. © 2024 SPIE.

关键词： Restoration

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High-Speed CBJT Operational Amplifier with Dual-Input-Stage Subclass Input Stage 3

High-Speed CBJT Operational Amplifier with Dual-Input-Stage ...

引用

3rd IEEE International Conference on Problems of Informatics, Electronics and Radio engineering, PIERE 2024

作者： Kuznetsov, Dmitry V. Titov, Alexey E. Sergeenko, Marsel A. Prokopenko, Nikolay N. Don State Technical University Dept. of Scientific Research Dept. of Information Systems and Radio Engineering Rostov-on-Don Russia Southern Federal University Dept. of Automatic Control Systems Rostov-on-Don Russia Don State Technical University Dept. of Information Systems and Radio Engineering Rostov-on-Don Russia

ISBN: (纸本)9798331516321

A significant disadvantage of classical operational amplifiers with two complementary differential stages in parallel (on the inputs) is that here the slew rate has small values (50-80 V/μs). This is due to the non-linear mode of operation of the input differential stage. In this paper, a new circuit technique for slew rate enhancement in CBJT operational amplifiers of this subclass is discussed. Due to the use of special circuitry of the input differential stage, the process of recharging of the integrating correction capacitance in non-inverting and inverting operational amplifier inclusions is forced. This ultimately improves the performance of the operational amplifier in the large-signal mode. The purpose and originality of this paper is to investigate a new circuit solution of operational amplifier, in which by introducing differentiating transient correction circuits, slew rate is improved by two orders of magnitude. This does not require nanometer-scale technological processes, and the operational amplifier transistors can operate with emitter currents on the order of 100 μA. It is possible to build micro-power operational amplifier on the basis of the proposed circuit design technique, including CBJT and CCMOS transistors. Computer simulations show that for micron CBJT silicon technological processes, the SR of the proposed operational amplifier in non-inverting inclusion (at 100% feedback) increases from 80 to 10000 V/μs, i.e., more than two orders of magnitude. © 2024 IEEE.

关键词： Operational amplifiers

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Influence of Conductor Arrangement and Termination Loads on Modal Redundancy Efficiency in a Four-Conductor Modal Filter

Influence of Conductor Arrangement and Termination Loads on ...

引用

2024 International Russian automation Conference, RusAutoCon 2024

作者： Lakoza, Alexandr M. Kosteletskii, Valerii P. Chernikova, Evgeniya B. Tomsk State University of Control Systems and Radioelectronics Dept. of Microwave and Quantum Radio Engineering Tomsk Russia

This paper presents the results of analyzing a four-conductor modal filter under trapezoidal noise influence on the time response at the device output. Thus, the use of matched terminations loads at the ends of far conductors allows to obtain 2.5% lower amplitudes at the output of the device relative to closely located ones. For the case of closely spaced conductors, the smallest amplitudes at the device output are observed with a combination of short circuit terminations loads at the far end and open circuit at the near end. Such allows to obtain up to 36.5% lower amplitudes relative to the far ones. Using the outer conductors as active conductors further reduces the amplitudes at the output of the device by up to 16.8 per cent percent. The terminations loads of conductors located through the air gap have no effect on the signal amplitude at the output of the protective device. © 2024 IEEE.

关键词： Signal interference

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Electrolyzers Heat Capture Study for a Wind Farm

Electrolyzers Heat Capture Study for a Wind Farm

引用

2023 IEEE PES Innovative Smart Grid Technologies Europe, ISGT EUROPE 2023

作者： Kordkheili, Ramin Ahmadi Pourakbari-Kasmaei, Mahdi Lehtonen, Matti Kordkheili, Reza Ahmadi Dept. Electrical Engineering and Automation Aalto University Espoo Finland Dept. Systems and Maintenance Engineering Vattenfall vindkraft A/S Kolding Denmark

ISBN: (纸本)9798350396782

Due to decarbonization targets and policies and closer collaboration of different energy sectors, wind farm owners (WFOs) have the possibility of contributing more to the energy sector. However, uncertainty is an inseparable part of wind power, thus, the WFO needs to deal with this challenge. Balancing electricity market is a place to partly decrease the deviation in generation. Also, currently, green hydrogen is another alternative to assist wind farms. However, turning wind power into green hydrogen via electrolyzers produces heat that can be reutilized. This work focuses on the electrolyzer's byproduct heat capture and usage (HCU). The impact of HCU on the economic and technical performance of the WFO is investigated via operation-planning studies. The results show that the profit of the WFO increased considerably with the improvement in the HCU rate. Moreover, the deviation of wind power is noticeably compensated with higher electrolyzers’ byproduct HCU rate. © 2023 IEEE.

关键词： Electricity markets Electrolyzers heat capture and usage Green hydrogen Heat market Power-to-X Wind farm

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Method for Improving the Performance of Operational Amplifier with HA2700 Microchip Architecture

Method for Improving the Performance of Operational Amplifie...

引用

2024 International Conference on Electrical engineering and Photonics, EExPolytech 2024

ISBN: (纸本)9798350388879

A circuit technique for increasing the maximum output voltage slew rate (SR) of an integrated operational amplifier (OpAmp) with the HA2700 microchip architecture based on the modernization of the input differential stage (DS) is considered. An OpAmp architecture is proposed in which the influence of parasitic capacitances of DS reference current sources and capacitances on the transistor substrate on the SR is minimized. This allows the use of micron technological processes in the fabrication of CBJT OpAmps, which are widely used to improve the radiation resistance of microchips. Computer simulation of the proposed OpAmp is performed, which shows that the SR of the new circuit differs from the SR of the well-known serial OpAmp by more than 40 times and reaches values of about 800 V/μs at the emitter current of the input transistors of the DC in the range of up to 80-100 μA. The developed OpAmp is recommended for practical use in discrete-to-analog filters on switched capacitors. © 2024 IEEE.

关键词： Operational amplifiers

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Evaluation of the Efficiency of Conductor Placement Under Different Types of Pulse Interference in Differential and Common Modes

Evaluation of the Efficiency of Conductor Placement Under Di...

引用

2024 International Conference on Industrial engineering, Applications and Manufacturing, ICIEAM 2024

作者： Lakoza, Alexandr M. Kosteletskii, Valerii P. Tomsk State University Of Control Systems And Radioelectronics Dept. Of Microwave And Quantum Radio Engineering Tomsk Russia

ISBN: (纸本)9798350395013

This paper investigates of the efficiency of using different ways of placing conductors with identical and unequal characteristics before and after switching under different types of pulse disturbances in differential and common modes of influence, obtained on the example of a four-wire modal filter (MF). The results show that the location of the main and redundant conductors in the MF and the type of the interfering signal significantly affect its efficiency. When a digitized interference signal C9-11 is used, an increase in the amplitude at the output of the structure is observed for two configurations in common (by 11.3% and 10.4%, respectively) and one in differential modes (by 18.7%). However, when a bipolar pulse is used, amplitude changes are observed for only one configuration, in differential mode (2.4 % increase). U sing the conductor configurations discussed above can help account for channel degradation due to aging or component wear, allowing prediction of performance degradation in different modes of operation. Switching to the appropriate configuration at the right time allows the performance changes to be compensated for. © 2024 IEEE.

关键词： Efficiency

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Influence of Cross-Section Geometrical Parameters on the Structures Characteristics Protecting in Differential and Common Modes 3

Influence of Cross-Section Geometrical Parameters on the Str...

引用

3rd IEEE International Conference on Problems of Informatics, Electronics and Radio engineering, PIERE 2024

ISBN: (纸本)9798331516321

The paper presents an analysis of the influence of the geometrical parameters of the cross-section on the characteristics of protection devices operating in differential and common modes. A protection device is defined as a structure comprising 6- and 8-conductor structures with inhomogeneous dielectric filling, connected in such a way that protection is provided in two modes. The study presents the dependencies of attenuation coefficients in differential and common modes, per-unit-delay delays and time intervals between decomposition pulses on parameter variations. It was found that the combined thickness of the dielectric substrate and the width of the conductors has the greatest influence on the attenuation coefficients in differential and common modes. Furthermore, the dielectric thickness has a significant impact on the time intervals and per-unit-length delays. The analysis of the obtained data enabled the key parameters of the investigated cross-sections and their ranges to be determined, which will inform further optimization. © 2024 IEEE.

关键词： Geometry

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Circuit Design Method of Rate Increase in Operational Amplifiers Based on the MH2XA031 Array Chip and CBJT Technological Routes

Circuit Design Method of Rate Increase in Operational Amplif...

引用

2024 Conference of Young Researchers in Electrical and Electronic engineering, ElCon 2024

作者： Titov, Alexey E. Kleimenkin, Dmitriy V. Prokopenko, Nikolay N. Southern Federal University Dept. of Automatic Control Systems Rostov-on-Don Russia Don State Technical University Dept. of Scientific Research Dept. of Information Systems and Radio Engineering Rostov-on-Don Russia

ISBN: (纸本)9798350360646

It has been revealed that in the conditions of small-scale production of discrete-analog filters on switched capacitors and ADC-drivers, it is most advisable to design high-speed operational amplifiers (OAs) based on the CBJT technological route and the MH2XA031 array chip, which allows operation in conditions of low temperatures and exposure to radiation. It has been established that most commercially produced O A s provide an average value of the slew rate (SR, up to 200 div 300 ~V / μ s). This is largely due to the limitations of the technologies used, and most importantly, to the irrational design of circuits. We study the maximum performance parameters of a CBJT OA with one integrating capacitor, which ensures the stability of the O A, and a differentiating transient correction circuit, which is implemented by connecting additional small capacitors to the original circuit. In this case, the S R of the O A increases by more than 500 times (up to 4000 ~V / μ s). © 2024 IEEE.

关键词： array chip CBJT operational amplifier slew rate

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Indoor Occupancy Estimation Based on Synergy of Physical Modeling, Environmental Data Fusion, and Machine Learning Frameworks 11

Indoor Occupancy Estimation Based on Synergy of Physical Mod...

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11th International Conference on Electrical, Electronic and Computing engineering, IcETRAN 2024

作者： Popović, Ivan Krčmar, Igor Rakić, Aleksandar University of Belgrade School of Electrical Engineering Dept. of Electronics Belgrade Serbia University of Banja Luka Faculty of Electrical Engineering Dept. of Control Systems Banja Luka Bosnia and Herzegovina University of Belgrade School of Electrical Engineering Dept. of Signals and Systems Belgrade Serbia

ISBN: (纸本)9798350386998

In a modern society, driven by both economic interests and a concern for personal privacy, indoor occupancy, either at workspace or in other type of accommodation, became a matter of stressed research interest. Though various methodologies have been developed so far, the proposed solutions of a technical problem of occupancy estimation still suffer from narrow perspectives and partial solutions, usually formulated as an optimization of a chosen mathematized problem. This paper considers the broader context of the problem, particularly its physical background, basic assumptions for the effective use of the environmental variables in occupancy estimations and the viable frameworks, either conventional or modern machine learning ones, that are to meet those assumptions. The approach is experimentally verified in a case study. © 2024 IEEE.

关键词： Adversarial machine learning

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