Journal of Electrical Engineering & Technology最新文献

{"title":"Adaptive Protection Algorithm Considering N-1 Contingency Situation Using Setting Groups of Directional Overcurrent Relays","authors":"Jin-Sol Song, Chul-Hwan Kim","doi":"10.1007/s42835-024-01962-0","DOIUrl":"https://doi.org/10.1007/s42835-024-01962-0","url":null,"abstract":"<p>Conventional power systems are protected from faults by directional overcurrent relays with fixed setting values. However, if a power line trips or if distributed generation is disconnected due to a fault or maintenance, it alters the topology of the power system. Consequently, the magnitude of the fault current also shifts, potentially causing a breakdown in the protection coordination system. It is considerably difficult to protect the power system using fixed setting values. Therefore, this paper proposes an adaptive protection algorithm using the setting groups (SGs) of a numerical protection relay. The number of SGs that a numerical protection relay can contain is limited and less than the number of possible topologies of the power system. The proposed algorithm optimizes not only the setting values of each protective relay but also the combinations of SGs corresponding to each topology. This broadens the searching area for the optimization algorithm, aiding in effectively reducing the operation time of protective relays. The protection algorithm is verified using a modified IEEE 30 bus test system.</p>","PeriodicalId":15577,"journal":{"name":"Journal of Electrical Engineering & Technology","volume":"27 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141513106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design Method of 50kV/0–40kHz High Voltage AC Power Supply for Dielectric Barrier Discharge (DBD) Based on SG3525A","authors":"XiangShuai Han, XingLiang Jiang, Tao Li, HaiTao Wu, Jia Liu","doi":"10.1007/s42835-024-01959-9","DOIUrl":"https://doi.org/10.1007/s42835-024-01959-9","url":null,"abstract":"<p>The generation of plasma by DBD has the advantages of low environmental requirements, simple operation, wide industrial applications, and the ability to stably generate low-temperature plasma. The high-frequency and high-voltage AC power supply is the main component of the DBD device. To achieve an adjustable frequency of the output voltage of high-frequency and high-voltage power supplies and improve the voltage stability performance of the power supply, this paper proposes a design scheme of a high-voltage and high-frequency AC power supply for DBD based on SG3525A, which introduces the system composition, control strategy, hardware circuit, simulation, and experimental results of the driving power supply in detail. The driving power supply adjusts the output voltage through a PWM signal generation circuit, an RCD absorption buffer circuit, and a power factor correction DC power supply. Under a DBD load with an equivalent capacitance of 48pF, the peak output voltage of the driving power supply is 50 kV, and the output frequency is up to 40 kHz. The experimental results show that the driving power supply meets the driving requirements of high voltage, high frequency, and excellent voltage stabilization performance for DBD.</p>","PeriodicalId":15577,"journal":{"name":"Journal of Electrical Engineering & Technology","volume":"114 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141513109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of the Influence of Winding Phase Shift of Dual Winding Permanent-Magnet Synchronous Machines on Inter-turn Short Circuit Fault","authors":"Yufeng Zhang, Qiaoning Shi, Chengyu Li, Yifei Zhang, Ting Zhang, Ruiyang Zhang, Guanghui Du","doi":"10.1007/s42835-024-01934-4","DOIUrl":"https://doi.org/10.1007/s42835-024-01934-4","url":null,"abstract":"<p>This study delves the impact of winding phase shift on the electromagnetic characteristics of operation with fault tolerance in a dual winding permanent magnet motor (DWPMSM) experiencing faults due to inter-turn short circuits. Firstly, the analytical expressions of fault inductance and short-circuit circulating current (SCCC) for a 12-slot/10-pole DWPMSM are derived based on the theory of winding function. Secondly, finite element analysis simulation models are constructed for the purpose of comparing and analyzing the amplitude of SCCC. This analysis extends to the examination of torque characteristics in the DWPMSM across various phase shift angles and speeds. The investigation reveals that the winding with a 30° phase shift exhibits the least self-inductance, while the self-inductance of the 0° phase-shift winding and the 60° phase-shift winding is larger. The amplitude of the SCCC for a 30° winding configuration is the largest. Besides, when n = 500 rpm, the torque characteristics of the 30° winding configuration are the best. Nonetheless, when n = 2500 rpm, the torque performance degrades as the count of short-circuit turns rises. Finally, the prototype is tested to verify the short circuit fault characteristics of the DWPMSM.</p>","PeriodicalId":15577,"journal":{"name":"Journal of Electrical Engineering & Technology","volume":"27 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rapid Power Curtailment Method Considering Power Imbalance of the Wind Power Generation System","authors":"Joon-Seok Oh, Jun-Ho Lee, Jae-Eon Kim","doi":"10.1007/s42835-024-01963-z","DOIUrl":"https://doi.org/10.1007/s42835-024-01963-z","url":null,"abstract":"<p>This paper proposes a rapid power curtailment method for a permanent magnet synchronous wind generation system to regulate the grid frequency in a weak grid. In a situation where rapid power curtailment is required, the conventional power curtailment method of the wind turbine can cause a power imbalance between the electrical energy and wind energy in the wind power generation system. It can cause severe damage to the generator because of overspeed in the wind turbine, which may require stopping power generation even though it can inject power into the grid. Cooperative control can be applied to resolve power imbalance during conventional power curtailment, which uses both the wind turbine’s pitch angle control and the machine-side converter’s current control. In other words, the pitch angle controller calculates the pitch angle for the active power output for the current wind speed conditions, and the machine-side converter calculates the current value for the active power output, so that the suddenly curtailed active power output of wind power generation can be achieved quickly and stably through cooperative control of pitch angle and converter current. The proposed method is simulated by PSCAD/EMTDC, and it is proven that the behavior characteristics of wind power generation for power curtailment are stable and well achieved.</p>","PeriodicalId":15577,"journal":{"name":"Journal of Electrical Engineering & Technology","volume":"61 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Two-Layer Planning Method for Distributed Energy Storage with Multi-point Layout in High Photovoltaic Penetration Distribution Network","authors":"Yukai Wei, Bo Zhao, Juan Hu, Xiaolong Xiao, Mingming Shi, Qi Zhou","doi":"10.1007/s42835-024-01945-1","DOIUrl":"https://doi.org/10.1007/s42835-024-01945-1","url":null,"abstract":"<p>In the planning of energy storage system (ESS) in distribution network with high photovoltaic penetration, in order to fully tap the regulation ability of distributed energy storage and achieve economic and stable operation of the distribution network, a two-layer planning method of distributed energy storage multi-point layout is proposed. Combining with the operation characteristic model of energy storage battery (ESB), a multi-point energy storage collaborative operation strategy considering the service life of ESB is proposed. A planning-operation two-layer model is constructed, in which the outer layer considers the total cost of ESS planning to determine the layout point number and capacity of ESS, and the inner layer focuses on the utilization rate of ESB and the operation stability of distribution network. The hybrid particle swarm optimization and non-dominated sorting genetic algorithm is used to solve the planning and operation results of distributed energy storage multi-point layout. Example analysis shows that after configuring a multi-point layout ESS, the total planning cost decreases by 20.25%, the utilization rate of ESB increases to over 50%, and the voltage fluctuation and loss rate of the distribution network decrease by 19.09% and 11.76%, respectively.</p>","PeriodicalId":15577,"journal":{"name":"Journal of Electrical Engineering & Technology","volume":"193 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-Objective Optimization of Single-Phase Induction Motor Considering Geometric and Winding Parameters","authors":"Yuan-Sheng An, Cong-Gan Ma, Hui Wang, Xin-Ling Wang, Dong Yang","doi":"10.1007/s42835-024-01957-x","DOIUrl":"https://doi.org/10.1007/s42835-024-01957-x","url":null,"abstract":"<p>The noise, vibration and harshness (NVH) performance of single-phase induction motor (SPIM) is often ignored, and the existing optimization methods of SPIM are difficult to achieve the improvement of output performance and NVH performance simultaneously. To solve this problem, a multi-objective optimization method considering both the geometric parameters and winding parameters of SPIM is proposed in this paper. Firstly, the key frequency components that contribute greatly to vibration and noise of SPIM are obtained through the vibration and noise measurement of the prototype. Then, the electromagnetic finite element model (FEM) of SPIM is established, and the geometric parameters of SPIM are optimized with the torque, efficiency and amplitudes of key frequency electromagnetic forces as the optimization objectives. After that, the analytical model of SPIM output performance is established, and the winding parameters are optimized with the torque and efficiency as the optimization objectives. Finally, the torques, efficiencies and amplitudes of key frequency electromagnetic forces of the SPIM before and after optimization are calculated by the electromagnetic FEM, and the optimization results are evaluated. The above process can be iterated until the optimization requirements is met. To verify the effectiveness of the proposed method, an SPIM with rated power of 800 W is taken as an example to illustrate the optimization process in detail. The output performance, vibration and noise of the SPIM before and after optimization are measured by dynamometer, vibration acceleration sensor and sound intensity sensor, respectively. After optimization, the torque and the efficiency of the motor are increased by about 4.9% and 0.5% respectively, and the vibration and noise are reduced by at least 76.6% and 4.6 dB (A) respectively.</p>","PeriodicalId":15577,"journal":{"name":"Journal of Electrical Engineering & Technology","volume":"2 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141513107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fault Recovery Method for Distributed Distribution Network Based on Island Partition","authors":"Yan Xu, Tao Wu, Peng Hu, Ning Wang","doi":"10.1007/s42835-024-01952-2","DOIUrl":"https://doi.org/10.1007/s42835-024-01952-2","url":null,"abstract":"<p>To improve the fault detection and recovery capabilities of distributed distribution networks, a distributed fault recovery method based on island segmentation is proposed. By establishing a fault feature analysis model, an autonomous island system is constructed and optimized using a dynamic distributed linear programming model. The design parameters of fault islands are divided using the branch and bound method, the steepest descent method, and the interior point method. Establish a dynamic parameter analysis model under large-scale uncertainty to achieve fault detection and recovery. The experimental results show that this method can accurately identify fault lines containing distributed power sources, effectively recover fault lines, and solve the problem of complex topology fault recovery.</p>","PeriodicalId":15577,"journal":{"name":"Journal of Electrical Engineering & Technology","volume":"25 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141513077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Innovative Hybrid Approach for Enhanced Renewable Energy Generation Forecasting Using Recurrent Neural Networks and Generative Adversarial Networks","authors":"Sreekumar Narayanan, Rajiv Kumar, Sudhir Ramadass, Jayaraj Ramasamy","doi":"10.1007/s42835-024-01943-3","DOIUrl":"https://doi.org/10.1007/s42835-024-01943-3","url":null,"abstract":"<p>Renewable energy sources hold the key to a sustainable and green future, yet their inherent variability poses significant challenges for reliable power generation forecasting. In response to this critical issue, this study presents an innovative approach that harnesses the power of both Recurrent Neural Networks (RNNs) and Generative Adversarial Networks (GANs) to revolutionize power generation forecasting in renewable energy systems. The hybrid model combines the strengths of RNNs, known for capturing temporal dynamics and sequential dependencies, and GANs, renowned for generating realistic data distributions. The results demonstrate a remarkable improvement in forecasting accuracy compared to traditional methods, reducing errors and uncertainties. The hybrid RNN-GAN model enhances the reliability of renewable energy systems, facilitating greater integration of sustainable energy sources into the grid. Furthermore, the research underscores the importance of incorporating a Grid-Connected Hybrid System Design and implementing a closed-loop control framework. These additions ensure that the forecasts are not just theoretical but are actively used to optimize energy utilization and maintain grid stability in real-world scenarios. This innovative approach holds great promise for a greener and more efficient energy landscape, making a substantial contribution to the transition towards a fresher and more sustainable future. The proposed Hybrid RNN-GAN model consistently outperforms existing methods, yielding significantly lower RMSE and MAE values for both solar and wind data, showcasing its superior accuracy in renewable energy generation forecasting. The achieved R-squared (R²) values of 0.82 for solar data and 0.7 for wind data at 100 iterations further validate the model's effectiveness in capturing underlying patterns, while skewness and kurtosis analyses affirm its ability to generate predictions aligned with normal distributions.</p>","PeriodicalId":15577,"journal":{"name":"Journal of Electrical Engineering & Technology","volume":"72 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141513110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Equivalent Circuit of Single-Sided Linear Induction Motors with Composite Sheet Secondary","authors":"Dihui Zeng, Ke Wang, Qiongxuan Ge","doi":"10.1007/s42835-024-01958-w","DOIUrl":"https://doi.org/10.1007/s42835-024-01958-w","url":null,"abstract":"<p> Since the single-sided linear induction motor has a finite length along the direction of its movement, the non-linear phenomena have significant impacts on the traction characteristics. The equivalent circuit of the linear induction motor is mainly established by two methods: the hypothetical distribution model and the quasi-1-D field analytical method. This paper mainly introduces a T-type equivalent circuit based on the quasi-1-D field analytical method, and comprehensively compares that based on the hypothetical distribution model. First, it proposes the transformation of the T-type equivalent circuit for the linear induction motor, and analyses the physical meaning of each parameter in the circuit. Second, an analysis method is briefly introduced, and the important correction coefficients to the end effects and other non-linear phenomena are derived. Third, the calculation procedures of thrust, vertical force and efficiency are proposed. Then, the characteristics in a prototype motor are calculated by using the T-type equivalent circuit derived from the analytical method, and the calculation results are compared with that based on the hypothetical distribution model. Finally, the experimental measurement results obtained by using a test rig verify the validity of the equivalent circuits.</p>","PeriodicalId":15577,"journal":{"name":"Journal of Electrical Engineering & Technology","volume":"28 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural Design and Optimization Analysis of Multi-degree-of-freedom Motor Using Gas Bearing","authors":"Zheng Li, Yu Liu, Song-Bo Liu, Qian-Qian Xu, He-Xu Sun","doi":"10.1007/s42835-024-01946-0","DOIUrl":"https://doi.org/10.1007/s42835-024-01946-0","url":null,"abstract":"<p>Gas bearings are becoming more and more widely used in motors, with low coefficients of friction compared to previous mechanical bearings, optimized motor performance. For this article, a novel motor structure based on a conventional air-floating multi-degree-of-freedom (MDOF) permanent magnet motor is proposed. The structure combines a MDOF motor with a gas bearing. The motor model proposed in this paper uses a spherical rotor shell, a hemispherical stator and a tile-shaped permanent magnet. The electromagnetic characteristics of the novel air-floating permanent magnet spherical motor (APMSM) with different permanent magnet (PM) structures and different magnetization methods are mainly studied, and the air gap magnetic field, slot torque, self-turn torque and deflection torque of the APMSM are analyzed. Then, the permanent magnet thickness and the groove fit were optimized, and the groove torque was compared by finite element software. Finally, the experimental results show that the electromagnetic properties of APMSM are significantly improved.</p>","PeriodicalId":15577,"journal":{"name":"Journal of Electrical Engineering & Technology","volume":"27 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141257175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}