International Transactions on Electrical Energy Systems最新文献

{"title":"Stability Domain Construction and Tuning for External Loop Controller Parameters Based on Permanent Magnet Wind Power Generation Systems","authors":"Hao Liang,&nbsp;Fei He,&nbsp;Guangtao Zhang,&nbsp;Chuan Qin","doi":"10.1155/etep/5538585","DOIUrl":"https://doi.org/10.1155/etep/5538585","url":null,"abstract":"<div>\u0000 <p>Based on the closed-loop frequency domain model of permanent magnet synchronous generator–based wind power generation system (PMSG-WPGS), the stability domain of the control parameters is constructed through the D-partition method in this paper to acquire the range of machine-side converter (MSC) and grid-side converter (GSC) parameters. First, the basic stability domain of the controller parameters is established according to the control structure and transfer function of the back-to-back converter. Then, based on the frequency domain performance indexes, amplitude margin and phase angle margin, the obtained basic stability domain is adjusted to further gain the control parameter values that meet the frequency domain index. Furthermore, the rationality of the stability domain range is verified by drawing root locus curves of variable controller parameters on the machine side and grid side. Finally, the low-power scale experimental platform of PMSG-WPGS is built in the lab to validate the feasibility of the proposed stability domain construction method.</p>\u0000 </div>","PeriodicalId":51293,"journal":{"name":"International Transactions on Electrical Energy Systems","volume":"2025 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/etep/5538585","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and Performance Analysis of a Novel Asymmetrical Multilevel Inverter Structure With Reduced Components Using the Half-Height Modulation Technique","authors":"Naznin Sultana Tuhin,&nbsp;Yeasir Arafat","doi":"10.1155/etep/5546944","DOIUrl":"https://doi.org/10.1155/etep/5546944","url":null,"abstract":"<div>\u0000 <p>This paper presents a novel single-phase 37-level asymmetrical multilevel inverter with fewer components and less voltage stress at the switches which reduces the cost of the inverter and increases efficiency. Existing multilevel inverters utilize a higher number of components to provide better output quality which increases the cost and the complexity. The proposed inverter circuit generates 37 levels of output voltage by utilizing only four DC sources and thirteen IGBT switches. Reduction of the total harmonic distortion (THD) and improvement of the output quality of the proposed structure are performed by implementing the half-height modulation technique. The number of components, cost factor, THD, and efficiency of the proposed structure have been compared to those of the inverter structures that are currently in use. The performance of the proposed structure is evaluated by MATLAB/Simulink and simulation results show that the proposed circuit produces higher-level output voltage with reduced THD by utilizing less components/levels and low-rated devices which makes the proposed topology cost-effective and efficient compared to other existing topologies. Also, the proposed structure offers stable performance under a variety of load conditions. Multiple input sources and less distorted output of the proposed topology make it appropriate for renewable energy generating systems which contribute to the reliable, efficient, and sustainable generation of electricity.</p>\u0000 </div>","PeriodicalId":51293,"journal":{"name":"International Transactions on Electrical Energy Systems","volume":"2025 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/etep/5546944","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Lissajous Curve–Based Method for Busbar Protection","authors":"M. Sarlak","doi":"10.1155/etep/8834200","DOIUrl":"https://doi.org/10.1155/etep/8834200","url":null,"abstract":"<div>\u0000 <p>In this paper, a novel time-domain method based on the orientation analysis of the superimposed current component Lissajous curves is presented for busbar protection. The conducted study has showed that the orientations of the superimposed current component Lissajous curves are different under internal and external fault conditions. These curves during internal faults are in the first and third quadrants, while under external fault conditions, they are oriented in the second and fourth quadrants. Using this property, an algorithm was designed to distinguish between internal and external faults. The proposed algorithm can identify internal faults up to a fault resistance of 500 Ω within a maximum of 2 ms with a sampling rate of 1 kHz. Moreover, the proposed scheme can detect evolving external to internal faults with CT saturation, internal faults during power transformer energization, and internal faults in the presence of white noise. Additionally, it is secure against external faults with current transformer (CT) saturation.</p>\u0000 </div>","PeriodicalId":51293,"journal":{"name":"International Transactions on Electrical Energy Systems","volume":"2024 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/etep/8834200","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced Linear State Observer–Based PLL-Less Vector-Oriented Control Method for a Three-Phase PWM Rectifier","authors":"Mabrouk Defdaf,&nbsp;Djamel Ziane,&nbsp;Ali Chebabhi,&nbsp;Said Barkat,&nbsp;Mohamed Fouad Benkhoris,&nbsp;Abdelhalim Kessal","doi":"10.1155/etep/7191464","DOIUrl":"https://doi.org/10.1155/etep/7191464","url":null,"abstract":"<div>\u0000 <p>In practical three-phase PWM rectifiers, external disturbances, such as changes in load and grid voltage, and internal disturbances, such as DC capacitor uncertainty, have caused major problems, including DC-link voltage fluctuations, harmonic distortion, and power factor degradation. They can also cause problems with power balance, stability, system dynamics, reduced efficiency, and increased stress. This paper proposes an enhanced linear state observer (ELSO) with a PLL-less voltage-oriented control (PLL-less VOC) method for a three-phase PWM rectifier in the synchronous coordinate frame (dq coordinate), aiming to simultaneously improve the DC-link voltage dynamics, disturbance rejection ability, and the grid current control loop’s transient response. The ELSO is suggested instead of the load current sensor not only to estimate the disturbance but also to estimate the overall switching losses of the PWM rectifier, resulting in good DC-link voltage disturbance rejection and transient fluctuation suppression, high robustness against DC capacitance change, low size and cost, and high reliability. Furthermore, contrary to the traditional VOC method, where the PLL and Park transforms are important parts for controlling the rectifier in the dq coordinate, the PLL-less VOC method can control the grid currents directly in the dq coordinate without needing PLL and Park transforms, which can offer a fast transient response and low computational burden. The frequency domain analysis of the ELSO is used to identify its gains and enhance its stability and disturbance rejection capability. Finally, hardware-in-the-loop (HIL) simulation using the OPAL-RT 4510 real-time simulator is also given to confirm the superiority and efficacy of the suggested control method.</p>\u0000 </div>","PeriodicalId":51293,"journal":{"name":"International Transactions on Electrical Energy Systems","volume":"2024 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/etep/7191464","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Grid Synchronization of the VSC-HVDC System Based on Virtual Synchronous Generator Control Strategy","authors":"M. Chethan,&nbsp;Ravi Kuppan","doi":"10.1155/etep/9933032","DOIUrl":"https://doi.org/10.1155/etep/9933032","url":null,"abstract":"<div>\u0000 <p>This paper explores an integration of virtual synchronous generators into voltage source converter–based VSC-HVDC systems to enhance grid stability and performance. VSGs emulate the inertia and damping characteristics of traditional synchronous generators, thereby providing essential frequency support and improving transient stability during disturbances. The study focuses on design considerations, control strategies, and the impact of VSG incorporation on system dynamics. Through detailed simulations and analyses, it is demonstrated that VSGs can significantly reduce the rate of change of frequency during transient events, thus enhancing the overall robustness and reliability of VSC-HVDC systems. In addition, the practical challenges of implementing VSG-based control are addressed, and solutions are proposed to optimize system integration and performance.</p>\u0000 </div>","PeriodicalId":51293,"journal":{"name":"International Transactions on Electrical Energy Systems","volume":"2024 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/etep/9933032","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Decentralized Control of Cascaded-Type AC Microgrids Integrating Dispatchable and Nondispatchable Generations","authors":"Lang Li,&nbsp;Peng Tian,&nbsp;Genglong Yan,&nbsp;Shixun Shen","doi":"10.1155/etep/4120338","DOIUrl":"https://doi.org/10.1155/etep/4120338","url":null,"abstract":"<div>\u0000 <p>Existing studies on decentralized control of islanded cascaded-type AC microgrids mainly focus on either dispatchable or nondispatchable DGs. However, islanded cascaded-type AC microgrids may contain both types of DGs. To address this issue, a decentralized control scheme is proposed that integrates both dispatchable and nondispatchable DGs for the islanded cascaded-type AC microgrids. By performing this method, frequency synchronization and power factor angle consistency for all DGs are obtained in a communication-free manner. One dispatchable DG is regulated to maintain constant voltage amplitudes at the point of common coupling (PCC). A high-quality power supply for load demands is achieved. Meanwhile, the nondispatchable DG is controlled to output active power based on its available capacity for using renewable energy efficiently. Next, a stability analysis of the proposed control for the cascaded-type AC microgrids is performed. Finally, simulations and experiments are executed to showcase the efficacy of the proposed scheme.</p>\u0000 </div>","PeriodicalId":51293,"journal":{"name":"International Transactions on Electrical Energy Systems","volume":"2024 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/etep/4120338","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Virtual Inertial Control of Small- and Medium-Sized Wind Turbines on Mobile Offshore Platforms with DC Microgrids","authors":"Ruifang Zhang,&nbsp;Guoling Wang,&nbsp;Zhenyu Li,&nbsp;Fuqiao He,&nbsp;Chenghan Luo,&nbsp;Wensheng Cao","doi":"10.1155/2024/3886096","DOIUrl":"https://doi.org/10.1155/2024/3886096","url":null,"abstract":"<div>\u0000 <p>The renewable energy mobile offshore platform, which adopts the combined power supply of renewable energy and energy storage, is an important carrier for the development and utilization of marine resources. The randomness of renewable energy generation has a more prominent effect on the bus voltage stability and transient voltage deviation of the power system with small capacity and low inertia. Considering the operation and maintenance characteristics of the offshore platform, a virtual inertia control method for small- and medium-sized wind turbines is proposed. Firstly, by analyzing the characteristics of the renewable energy microgrid of the unattended offshore platform, considering the operating environment with high average wind speed at sea, the mechanical inertia in the wind turbine is selected as the energy source of virtual inertia. The structure of the wind power generation unit is analyzed, and small signal modeling is carried out. A virtual inertia control method based on power droop is proposed, and the rotational inertia and the damping coefficient are obtained from the characteristics of transient and steady-state analysis of the system. Finally, the DC microgrid experiment platform of the offshore platform is constructed, and it is verified that the proposed method makes full use of the characteristics of the offshore platform to enhance system inertia and improve the operational stability of the offshore platform DC microgrid system.</p>\u0000 </div>","PeriodicalId":51293,"journal":{"name":"International Transactions on Electrical Energy Systems","volume":"2024 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/3886096","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142749042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on Coordinated Oscillation Control Strategy of AC/DC Hybrid Distribution Network Based on Mixed-Integer Linear Programming","authors":"Shumin Sun,&nbsp;Peng Yu,&nbsp;Jiawei Xing,&nbsp;Yuejiao Wang,&nbsp;Song Yang","doi":"10.1155/etep/5580709","DOIUrl":"https://doi.org/10.1155/etep/5580709","url":null,"abstract":"<div>\u0000 <p>In order to improve the self-healing control ability of AC-DC hybrid distribution network and ensure the stability of distribution network operation, a coordinated oscillation control strategy for AC-DC hybrid distribution network based on mixed-integer linear programming (MILP) is proposed. By constructing a multiscale reactive power optimization model and considering the comprehensive cost minimization goal including network loss cost, regulation cost, and operation cost, the operation efficiency and reliability of distribution network are improved. In the simulation experiment, the AC-DC hybrid distribution network of a regional power supply company is taken as the experimental object by using MATLAB software, and the effectiveness of the proposed method is verified by setting different operation scenarios. The results show that in Scenario 1, the voltage of the proposed method is between 1.02 and 1.04 U, and the voltage fluctuation range is small. The proposed method can keep the voltage variation within the rated control range, which shows a more stable trend than other methods, whether in the scene where wind farms or photovoltaic fields work alone or in the scene where they work together with energy storage equipment. In addition, when simulating a single-phase fault, compared with the case without this method, this method can locate the fault area more accurately and significantly improve the reliability of fault detection. The significance of this study is to provide an effective mathematical model and control strategy to deal with the complex dynamic behavior of AC-DC hybrid distribution network. This not only enhances the adaptability of the power grid to various uncertain factors but also improves the economy and security of the power grid.</p>\u0000 </div>","PeriodicalId":51293,"journal":{"name":"International Transactions on Electrical Energy Systems","volume":"2024 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/etep/5580709","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Planning of Multiregional EV Charging and Battery Swapping Stations Based on Dynamic Weighting Indexes","authors":"Yin Yao,&nbsp;Yehui Wang,&nbsp;Bo Zhou,&nbsp;Shunfu Lin,&nbsp;Dongdong Li","doi":"10.1155/etep/1577715","DOIUrl":"https://doi.org/10.1155/etep/1577715","url":null,"abstract":"<div>\u0000 <p>The increase in electric vehicle (EV) penetration has triggered a surge in demand for battery charging and swapping infrastructure. However, in diverse urban regions, an unbalanced allocation of charging stations (CSs) and battery swapping stations (BSSs) can lead to inefficient resource utilization and diminished revenue for these facilities. Therefore, it is urgent to set up a system of operational and economic indexes to evaluate the proportional planning of CSs and BSSs. The traditional weighting method of the index system cannot accurately describe the relationship between the indexes. As a result, an evaluation method of CS and BSS operational economy based on dynamic weighting indexes is proposed. Firstly, from the perspectives of EV owners, CSs, BSSs, power grid, traffic, and environment, a social and economic index system of CSs and BSSs is established, and quantifiable indexes related to the operational economy are extracted. Then, the copula entropy (CE) is used to improve the CRITIC objective weighting method, reflect the correlation between indexes, and align it with the objective law. The selected indexes are weighted by the subjective and objective combination weighting method. Finally, the simulation is conducted based on the practical data of the urban power grid in China. The rationality of the proposed operation economic indexes and the effectiveness of the improved weighting method are verified.</p>\u0000 </div>","PeriodicalId":51293,"journal":{"name":"International Transactions on Electrical Energy Systems","volume":"2024 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/etep/1577715","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving Power Quality of a Hybrid Grid-Connected Photovoltaic–Wind Microgrid Using Shunt Active Power Filter and Distribution Static Synchronous Compensator","authors":"Ehsan Akbari,&nbsp;Abbas Zare Ghaleh Seyyedi","doi":"10.1155/etep/9609370","DOIUrl":"https://doi.org/10.1155/etep/9609370","url":null,"abstract":"<div>\u0000 <p>Unbalanced voltage and harmonics are major challenges in a microgrid. Single- and two-phase loads and short circuit can make unbalanced voltage. Besides, nonlinear loads create harmonic components in the grid. Thus, compensating both of the unbalanced voltage and harmonic distortion is necessary. Otherwise, they could cause low power quality, resonance, and stability issues. The present paper suggests a combination of distribution static synchronous compensator (DSTATCOM) and shunt active power filter (SAPF) to address the unbalanced voltage and harmonic pollution in hybrid grid-connected microgrid. A four-wire distributed static synchronous compensator has been adopted to deal with the negative- and zero-sequence components of the microgrid, extracting these components by using second-order generalized integrator (SOGI). To solve the harmonic issue, a SAPF is presented to dynamic compensation of grid current and voltage harmonic components in addition to DSTATCOM. The SAPF relies on estimating the fundamental frequency positive-sequence component (FFPSC) of the load current by applying the second-order sequence filter (SOSF). Since combining the reference signals of voltage balancer and harmonic eliminating at one controller is impossible, two independent devices are presented. Although both of the equipment have a same conception, their control and operation are different. So, simultaneous incorporation of distributed static synchronous compensator and SAPF for mitigating the unbalancing and distortion in the grid-connected microgrid based on hybrid solar and wind power is the work’s novelty. Some merits of this scheme include simple structure, fast real-time controller, low computational burden, and more effective operation. Robustness and effectiveness of such very simple scheme are evaluated by simulation in MATLAB/Simulink environment. Simulation report demonstrates that the total harmonic distortion (THD) of grid voltage and current decrease well under 1.44% and 2.33%, respectively. Meanwhile, the voltage unbalance factor (VUF) of negative and zero sequence of grid voltage reduces to 1.1% and 0%, respectively.</p>\u0000 </div>","PeriodicalId":51293,"journal":{"name":"International Transactions on Electrical Energy Systems","volume":"2024 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/etep/9609370","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}