International Journal of Electrical Power & Energy Systems最新文献

英文中文

Simulation study on converter transformer windings stress characteristics under harmonic current and temperature rise effect

IF 5 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Electrical Power & Energy Systems

Pub Date : 2025-02-04 DOI: 10.1016/j.ijepes.2025.110505

Jing Xu , Jian Hao , Ning Zhang , Ruijin Liao , Yun Feng , Wenlong Liao , Huanchao Cheng

High-frequency harmonic current leads to temperature increases and uneven stress distribution within ultra-high-voltage (UHV) converter transformer windings. This paper presents a simulation study that explores the stress distribution characteristics in UHV converter transformer windings, taking into account the thermal effects of harmonic current. The research developed a two-dimensional (2D) refined simulation model integrating electromagnetic, thermal-fluid, and solid mechanics fields to analyze the temperature distribution patterns influenced by harmonic currents. The study investigated the influence of temperature rise on the stress distribution within the windings, analyzing the effects of harmonic current content and frequency on the maximum stress values. Finally, the study proposed and validated a novel winding stress calculation model that incorporates the effects of harmonic current and their associated temperature rise. The results demonstrate that hotspot temperatures on both the grid and valve side windings increase as a power function of harmonic current content and exponentially with frequency. Following the inclusion of thermal rise effects, the stress in the grid-side and valve-side windings shifts towards the oil channels between the two windings and also spreads from the hotspot temperature regions to the central regions of the windings. Maximum stress changes under varying harmonic frequencies follow a power function growth pattern. Stress values from the proposed model, considering thermal effects, deviate by less than 5% from those calculated using multi-field coupling simulation. This study provides essential guidance for the design and maintenance of UHV converter transformer windings under new power system operating conditions.

{"title":"Simulation study on converter transformer windings stress characteristics under harmonic current and temperature rise effect","authors":"Jing Xu , Jian Hao , Ning Zhang , Ruijin Liao , Yun Feng , Wenlong Liao , Huanchao Cheng","doi":"10.1016/j.ijepes.2025.110505","DOIUrl":"10.1016/j.ijepes.2025.110505","url":null,"abstract":"<div><div>High-frequency harmonic current leads to temperature increases and uneven stress distribution within ultra-high-voltage (UHV) converter transformer windings. This paper presents a simulation study that explores the stress distribution characteristics in UHV converter transformer windings, taking into account the thermal effects of harmonic current. The research developed a two-dimensional (2D) refined simulation model integrating electromagnetic, thermal-fluid, and solid mechanics fields to analyze the temperature distribution patterns influenced by harmonic currents. The study investigated the influence of temperature rise on the stress distribution within the windings, analyzing the effects of harmonic current content and frequency on the maximum stress values. Finally, the study proposed and validated a novel winding stress calculation model that incorporates the effects of harmonic current and their associated temperature rise. The results demonstrate that hotspot temperatures on both the grid and valve side windings increase as a power function of harmonic current content and exponentially with frequency. Following the inclusion of thermal rise effects, the stress in the grid-side and valve-side windings shifts towards the oil channels between the two windings and also spreads from the hotspot temperature regions to the central regions of the windings. Maximum stress changes under varying harmonic frequencies follow a power function growth pattern. Stress values from the proposed model, considering thermal effects, deviate by less than 5% from those calculated using multi-field coupling simulation. This study provides essential guidance for the design and maintenance of UHV converter transformer windings under new power system operating conditions.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"165 ","pages":"Article 110505"},"PeriodicalIF":5.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An adaptive load forecasting model in microgrids: A cloud-edge orchestrated approach tailored for accuracy, real-time response, and privacy needs

IF 5 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Electrical Power & Energy Systems

Pub Date : 2025-02-03 DOI: 10.1016/j.ijepes.2025.110490

Yan Zhao , Jiaqi Shi , Donglai Wang , He Jiang , Xiang Zhang

The load forecasting tasks in different types of microgrids offer diversified requirements on application, such as forecasting accuracy, model complexity restrictions, and hardware environment. In our paper, typical load forecasting tasks in microgrids are classified into accuracy-oriented, real-time response and privacy-preserving type. An adaptive load forecasting model is proposed considering the trade-off between accuracy and efficiency by utilizing the customized AI algorithm and real cloud-edge orchestrated architecture. The decoupled module of forecasting model is considerably analyzed from accuracy impact and computing resource occupation, which arranges in different hardware environments to meet needs of different microgrid. Finally, the adaptive forecasting model is verified by the actual dataset from the MiRIS microgrid in Belgium. The proposed model can achieve satisfactory trade-off between accuracy and computation resource consumption, which meets the requirement for different types of microgrid load forecasting tasks.

{"title":"An adaptive load forecasting model in microgrids: A cloud-edge orchestrated approach tailored for accuracy, real-time response, and privacy needs","authors":"Yan Zhao , Jiaqi Shi , Donglai Wang , He Jiang , Xiang Zhang","doi":"10.1016/j.ijepes.2025.110490","DOIUrl":"10.1016/j.ijepes.2025.110490","url":null,"abstract":"<div><div>The load forecasting tasks in different types of microgrids offer diversified requirements on application, such as forecasting accuracy, model complexity restrictions, and hardware environment. In our paper, typical load forecasting tasks in microgrids are classified into accuracy-oriented, real-time response and privacy-preserving type. An adaptive load forecasting model is proposed considering the trade-off between accuracy and efficiency by utilizing the customized AI algorithm and real cloud-edge orchestrated architecture. The decoupled module of forecasting model is considerably analyzed from accuracy impact and computing resource occupation, which arranges in different hardware environments to meet needs of different microgrid. Finally, the adaptive forecasting model is verified by the actual dataset from the MiRIS microgrid in Belgium. The proposed model can achieve satisfactory trade-off between accuracy and computation resource consumption, which meets the requirement for different types of microgrid load forecasting tasks.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"165 ","pages":"Article 110490"},"PeriodicalIF":5.0,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel virtual inductor optimization methodology of virtual synchronous generators for enhanced power decoupling

IF 5 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Electrical Power & Energy Systems

Pub Date : 2025-02-03 DOI: 10.1016/j.ijepes.2025.110473

Xin Zhang , Lijiao Gong , Yanjun Zhang , Xiaolei Ma , Lianshan Han , Santao Jiang , Weiji Zhou

The integration of increasing amounts of inverter-interfaced generation units into power network presents critical challenges regarding the dynamic behavior and stability of grid-connected power electronic systems. Virtual synchronous generator (VSG) is a promising solution to address these challenges effectively. But the capability of grid-connected inverter power output is limited with resistively-dominated system due to the strong power coupling. This article introduces a novel optimization methodology for virtual inductor within VSG, aimed at enhancing the power decoupling capacity of inverter. Firstly, a dynamic coupling model of VSG incorporating a virtual inductor is established. This model facilitates the analysis of power stability under different control parameters and resistance-to-inductive reactance ratios in the grid line. It enables the preliminary regulation of the system’s steady-state and dynamic characteristics. Secondly, the study formulates the dynamic and static reference voltage equations. Along with the establishment of system’s equivalent impedance model after incorporating virtual inductor. Furthermore, the paper proposes the optimization of virtual inductor’s parameters using a variable function of power coupling degree. This content achieves precise adjustment of the system’s stability, dynamic and decoupling performance. Finally, a series of comparative experiments is conducted to demonstrate its superior dynamic, static performance and enhanced power decoupling characteristics. In addition, a 15 kW inverter laboratory prototype controlled by StarSim rapid control prototyping (RCP) is used to test the proposed methodology. The simulation and experimental results verify the correctness and feasibility of the virtual inductor parameter optimization method.

{"title":"A novel virtual inductor optimization methodology of virtual synchronous generators for enhanced power decoupling","authors":"Xin Zhang , Lijiao Gong , Yanjun Zhang , Xiaolei Ma , Lianshan Han , Santao Jiang , Weiji Zhou","doi":"10.1016/j.ijepes.2025.110473","DOIUrl":"10.1016/j.ijepes.2025.110473","url":null,"abstract":"<div><div>The integration of increasing amounts of inverter-interfaced generation units into power network presents critical challenges regarding the dynamic behavior and stability of grid-connected power electronic systems. Virtual synchronous generator (VSG) is a promising solution to address these challenges effectively. But the capability of grid-connected inverter power output is limited with resistively-dominated system due to the strong power coupling. This article introduces a novel optimization methodology for virtual inductor within VSG, aimed at enhancing the power decoupling capacity of inverter. Firstly, a dynamic coupling model of VSG incorporating a virtual inductor is established. This model facilitates the analysis of power stability under different control parameters and resistance-to-inductive reactance ratios in the grid line. It enables the preliminary regulation of the system’s steady-state and dynamic characteristics. Secondly, the study formulates the dynamic and static reference voltage equations. Along with the establishment of system’s equivalent impedance model after incorporating virtual inductor. Furthermore, the paper proposes the optimization of virtual inductor’s parameters using a variable function of power coupling degree. This content achieves precise adjustment of the system’s stability, dynamic and decoupling performance. Finally, a series of comparative experiments is conducted to demonstrate its superior dynamic, static performance and enhanced power decoupling characteristics. In addition, a 15 kW inverter laboratory prototype controlled by StarSim rapid control prototyping (RCP) is used to test the proposed methodology. The simulation and experimental results verify the correctness and feasibility of the virtual inductor parameter optimization method.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"165 ","pages":"Article 110473"},"PeriodicalIF":5.0,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143142220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Two-stage rolling optimization operation strategy for microgrid considering BESU state

IF 5 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Electrical Power & Energy Systems

Pub Date : 2025-02-01 DOI: 10.1016/j.ijepes.2025.110497

Gang Zhang, Yichen Li, Tuo Xie, Kaoshe Zhang

To address the poor optimization and high life loss of battery energy storage systems (BESS) in microgrid grid-connected scenarios, this paper proposes a two-stage rolling optimization operation strategy for microgrids, considering the state of battery energy storage unit (BESU). Firstly, a microgrid grid-connected instruction set optimization model is established with the objectives of minimizing the number of unqualified periods of grid-connected power scheduling, minimizing the number of unqualified periods of grid-connected power fluctuations, and minimizing the cumulative charging and discharging throughput of BESS. The multi-objective exponential distribution optimizer (MOEDO) is utilized to solve this model. Secondly, considering the number of charge and discharge state conversions, state of charge (SOC) consistency, and charge and discharge efficiency indicators, a BESS power allocation strategy comprising a unit grouping module, a unit screening module, and a power allocation module is designed. The energy valley optimizer (EVO) is employed to optimize the allocation scheme. Finally, in order to solve the optimal compromise decision-making problem, a multi-dimensional evaluation system for the microgrid operation results was constructed, the analytic hierarchy process (AHP) was used to weight the evaluation system, and simulation experiments were carried out using the actual parameters of the microgrid in a specific area. The comparison results show that the proposed strategy can reduce the number of BESS charge and discharge state transitions, improve the SOC consistency level and charge and discharge efficiency while improving the microgrid’s grid-connected performance.

{"title":"Two-stage rolling optimization operation strategy for microgrid considering BESU state","authors":"Gang Zhang, Yichen Li, Tuo Xie, Kaoshe Zhang","doi":"10.1016/j.ijepes.2025.110497","DOIUrl":"10.1016/j.ijepes.2025.110497","url":null,"abstract":"<div><div>To address the poor optimization and high life loss of battery energy storage systems (BESS) in microgrid grid-connected scenarios, this paper proposes a two-stage rolling optimization operation strategy for microgrids, considering the state of battery energy storage unit (BESU). Firstly, a microgrid grid-connected instruction set optimization model is established with the objectives of minimizing the number of unqualified periods of grid-connected power scheduling, minimizing the number of unqualified periods of grid-connected power fluctuations, and minimizing the cumulative charging and discharging throughput of BESS. The multi-objective exponential distribution optimizer (MOEDO) is utilized to solve this model. Secondly, considering the number of charge and discharge state conversions, state of charge (SOC) consistency, and charge and discharge efficiency indicators, a BESS power allocation strategy comprising a unit grouping module, a unit screening module, and a power allocation module is designed. The energy valley optimizer (EVO) is employed to optimize the allocation scheme. Finally, in order to solve the optimal compromise decision-making problem, a multi-dimensional evaluation system for the microgrid operation results was constructed, the analytic hierarchy process (AHP) was used to weight the evaluation system, and simulation experiments were carried out using the actual parameters of the microgrid in a specific area. The comparison results show that the proposed strategy can reduce the number of BESS charge and discharge state transitions, improve the SOC consistency level and charge and discharge efficiency while improving the microgrid’s grid-connected performance.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"165 ","pages":"Article 110497"},"PeriodicalIF":5.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Damping characteristic analysis of grid-forming PMSG-based WT under different power oscillation damping controls

IF 5 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Electrical Power & Energy Systems

Pub Date : 2025-02-01 DOI: 10.1016/j.ijepes.2025.110453

Xiaotian Yuan , Zhengchun Du , Yujun Li , Tong Qu , Han Jiang

In this paper, the damping characteristics of the grid-forming permanent magnet synchronous generator (PMSG)-based wind turbine (WT) under different damping controls are investigated considering energy efficiency. First, a newly developed grid-forming control, the DC voltage synchronization control (DVSC), is incorporated into PMSG-based WT, allowing for inertial response and grid-synchronization of WT without a phase-locked loop (PLL). Then, by analyzing the coupling effects between WT dynamics and the active power loop, it was found that the previous active power-based grid-forming controls may sacrifice maximum power point tracking (MPPT) for damping provision and consequently affect the system damping coefficient. To this end, two cost-effective reactive power-based damping controllers are designed using the internal DC signals, where the reactive power and the stored DC energy are jointly harnessed for damping enhancement. The proposed dampers have the energy-saving merits of not impairing MPPT while providing the same damping support as the active power-based dampers. Furthermore, the impacts of related control parameters and operating conditions on system damping properties are substantially evaluated, followed by the parameter tuning method for balancing the DC voltage stability and damping requirements. Simulation studies are performed under various system contingencies in two distinct sceneries to compare the performance of different damping controllers.

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引用次数: 0

Enlarged current injection model for the power flow solution of unbalanced distribution networks

IF 5 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Electrical Power & Energy Systems

Pub Date : 2025-01-31 DOI: 10.1016/j.ijepes.2025.110495

Rubén Carmona-Pardo , Álvaro Rodríguez del Nozal , Esther Romero-Ramos , Antonio Gómez-Expósito

This paper presents an approach for the power flow solution of three-phase, four-wire unbalanced distribution networks. The proposed formulation uses rectangular coordinates and, unlike most earlier approaches, both bus voltages and injected currents are retained as variables. The Newton–Raphson method is then applied to the augmented system of equations, resulting in an iterative process that is solved optimally. All together, this scheme constitutes a novel solution to the power flow problem of unbalanced distribution networks, leveraging its enhanced numerical conditioning to improve the convergence rate. A thorough analysis of the proposed approach on several real-life distribution networks demonstrates its performance and robustness, when compared to the conventional current injection method.

引用次数: 0

Reliability assessment for Modular Multilevel Converters using Monte Carlo Simulations

IF 5 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Electrical Power & Energy Systems

Pub Date : 2025-01-30 DOI: 10.1016/j.ijepes.2025.110482

Miad Ahmadi, Aditya Shekhar, Pavol Bauer

Modular Multilevel Converters (MMCs) offer significant advantages in the medium to high-voltage settings. The modular architecture of MMCs allows for redundant submodules (SMs) to improve overall reliability. These redundant SMs can be deployed using various redundancy strategies, such as Load-Sharing Active Redundancy Strategy (LS-ARS), Fixed-Level Active Redundancy Strategy (FL-ARS), and Standby Redundancy Strategy (SRS). The primary contribution of this paper is the introduction of guidelines for applying Monte Carlo Simulation (MCS) and a comprehensive methodology for its application across various redundancy strategies. This enables precise planning of preventive maintenance and estimation of the number of faulty SMs with a specific lifespan in the MMC. More importantly, MCS is applied to estimate the reliability of the MMC applying Mission Profile for SRS and LS-ARS where analytical solutions are unavailable. An analysis of uncertainty and the applicability of MCS is also presented to demonstrate the advantages of MCS over analytical methods. The computational time required for applying MCS across different redundancy strategies and arm levels is also assessed.

{"title":"Reliability assessment for Modular Multilevel Converters using Monte Carlo Simulations","authors":"Miad Ahmadi, Aditya Shekhar, Pavol Bauer","doi":"10.1016/j.ijepes.2025.110482","DOIUrl":"10.1016/j.ijepes.2025.110482","url":null,"abstract":"<div><div>Modular Multilevel Converters (MMCs) offer significant advantages in the medium to high-voltage settings. The modular architecture of MMCs allows for redundant submodules (SMs) to improve overall reliability. These redundant SMs can be deployed using various redundancy strategies, such as Load-Sharing Active Redundancy Strategy (LS-ARS), Fixed-Level Active Redundancy Strategy (FL-ARS), and Standby Redundancy Strategy (SRS). The primary contribution of this paper is the introduction of guidelines for applying Monte Carlo Simulation (MCS) and a comprehensive methodology for its application across various redundancy strategies. This enables precise planning of preventive maintenance and estimation of the number of faulty SMs with a specific lifespan in the MMC. More importantly, MCS is applied to estimate the reliability of the MMC applying Mission Profile for SRS and LS-ARS where analytical solutions are unavailable. An analysis of uncertainty and the applicability of MCS is also presented to demonstrate the advantages of MCS over analytical methods. The computational time required for applying MCS across different redundancy strategies and arm levels is also assessed.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"165 ","pages":"Article 110482"},"PeriodicalIF":5.0,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143142262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic network partition and voltage regulation method by PVs considering reactive power compensation benefits

IF 5 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Electrical Power & Energy Systems

Pub Date : 2025-01-28 DOI: 10.1016/j.ijepes.2025.110464

Huaxi Yu , Ying Wang , Qing Wang , Zhuo Cheng , Shunyi Li , Xianyong Xiao , Yunzhu Chen

The technology of using photovoltaic (PV) inverters to generate reactive power for regulating voltage in distribution networks is becoming a research hotspot. However, from technical and economic perspectives, the PV has limitations in improving network voltage quality. Therefore, this study proposed a voltage regulation method using PVs based on dynamic network partitioning. First, a multi-stage dynamic partitioning method is proposed. In the first stage, a network partitioning method based on a coupling coefficient indicator system is used to identify the most sensitive area for reactive power compensation of each PV; in the second stage, a cluster reconfiguration model based on active power curtailment of PVs is used to improve the voltage quality—this costs the minimum amount of active power curtailment when the capacity of reactive power supply is less than the demand. In the third stage, an aggregation method for network partitioning results is used to define a new indicator for identifying the necessity of performing a recalculation partition, significantly reducing the calculation computation. Second, this study proposed a differentiated tariff strategy based on the reactive power contribution coefficient, ensuring that the PV owners (PVOs) who contribute more in reactive power can obtain more rewards, improving the activity of PVOs for voltage regulation. Third, the cooperative earnings game model for the participants based on Nash theory is proposed to maximize the profits of the two parties. Finally, the proposed method was verified using the modified IEEE 123 node test system, proving the accuracy and applicability of the proposed method.

{"title":"Dynamic network partition and voltage regulation method by PVs considering reactive power compensation benefits","authors":"Huaxi Yu , Ying Wang , Qing Wang , Zhuo Cheng , Shunyi Li , Xianyong Xiao , Yunzhu Chen","doi":"10.1016/j.ijepes.2025.110464","DOIUrl":"10.1016/j.ijepes.2025.110464","url":null,"abstract":"<div><div>The technology of using photovoltaic (PV) inverters to generate reactive power for regulating voltage in distribution networks is becoming a research hotspot. However, from technical and economic perspectives, the PV has limitations in improving network voltage quality. Therefore, this study proposed a voltage regulation method using PVs based on dynamic network partitioning. First, a multi-stage dynamic partitioning method is proposed. In the first stage, a network partitioning method based on a coupling coefficient indicator system is used to identify the most sensitive area for reactive power compensation of each PV; in the second stage, a cluster reconfiguration model based on active power curtailment of PVs is used to improve the voltage quality—this costs the minimum amount of active power curtailment when the capacity of reactive power supply is less than the demand. In the third stage, an aggregation method for network partitioning results is used to define a new indicator for identifying the necessity of performing a recalculation partition, significantly reducing the calculation computation. Second, this study proposed a differentiated tariff strategy based on the reactive power contribution coefficient, ensuring that the PV owners (PVOs) who contribute more in reactive power can obtain more rewards, improving the activity of PVOs for voltage regulation. Third, the cooperative earnings game model for the participants based on Nash theory is proposed to maximize the profits of the two parties. Finally, the proposed method was verified using the modified IEEE 123 node test system, proving the accuracy and applicability of the proposed method.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"165 ","pages":"Article 110464"},"PeriodicalIF":5.0,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143142263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel methodology for accessible design of multi-source renewable energy community: application to a wooded area in central Italy

IF 5 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Electrical Power & Energy Systems

Pub Date : 2025-01-27 DOI: 10.1016/j.ijepes.2025.110496

Luca Brunelli , Elisa Belloni , Ilaria Pigliautile , Riccardo Cardelli , Anna Laura Pisello , Franco Cotana

Renewable Energy Communities (RECs) are becoming essential in tackling energy transition challenges, promoting local energy sharing from diverse renewable energy sources to optimize environmental, economic, and social benefits. This study presents an innovative simulation tool for designing hybrid RECs that integrate diversified renewable sources, addressing a critical gap in existing tools. The tool was used to design a REC in a woodland area in central Italy where the sustainable management of locally available resources suggests the energy generation through biomass and photovoltaic plants. In this context, the REC initiative is further suggested as a mechanism to counteract depopulation trends by activating new services aligned with sustainable development goals. Simulations of various scenarios, involving REC members’ compositions and renewable plant sizes, reveal that opting for 600 kW biomass plant yields significant environmental benefits, with up to 1660 t/year of avoided CO₂ emissions and over 80 % energy self-sufficiency for any configuration. However, incorporating more PVs in the energy mix could lead to shorter discounted payback period (down to 4.9 years). The engagement of industrial users is recognized as a critical factor for the success of the REC initiative, playing a vital role in community revitalization.

{"title":"A novel methodology for accessible design of multi-source renewable energy community: application to a wooded area in central Italy","authors":"Luca Brunelli , Elisa Belloni , Ilaria Pigliautile , Riccardo Cardelli , Anna Laura Pisello , Franco Cotana","doi":"10.1016/j.ijepes.2025.110496","DOIUrl":"10.1016/j.ijepes.2025.110496","url":null,"abstract":"<div><div>Renewable Energy Communities (RECs) are becoming essential in tackling energy transition challenges, promoting local energy sharing from diverse renewable energy sources to optimize environmental, economic, and social benefits. This study presents an innovative simulation tool for designing hybrid RECs that integrate diversified renewable sources, addressing a critical gap in existing tools. The tool was used to design a REC in a woodland area in central Italy where the sustainable management of locally available resources suggests the energy generation through biomass and photovoltaic plants. In this context, the REC initiative is further suggested as a mechanism to counteract depopulation trends by activating new services aligned with sustainable development goals. Simulations of various scenarios, involving REC members’ compositions and renewable plant sizes, reveal that opting for 600 kW biomass plant yields significant environmental benefits, with up to 1660 t/year of avoided CO<sub>2</sub> emissions and over 80 % energy self-sufficiency for any configuration. However, incorporating more PVs in the energy mix could lead to shorter discounted payback period (down to 4.9 years). The engagement of industrial users is recognized as a critical factor for the success of the REC initiative, playing a vital role in community revitalization.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"165 ","pages":"Article 110496"},"PeriodicalIF":5.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Direct power control for DFIG systems under distorted voltage using predictive repetitive control

IF 5 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Electrical Power & Energy Systems

Pub Date : 2025-01-24 DOI: 10.1016/j.ijepes.2025.110465

A. Lunardi , E.R. Conde , N. Rocha , A.J. Sguarezi Filho

This paper presents the project of direct predictive repetitive power control for DFIG applied to the electrical grid in the presence of harmonic elements. The expanded model for the controller project proposed in this article is obtained through the mathematical model of the generator in state space with the active and reactive power as a state. The controller is implemented on an experimental bench, where the obtained results are presented to support the controller’s efficiency and ability to reject disturbances. The disturbances are mitigate due to the addition of a polynomial that includes an integrative effect on the plant in its expanded model. Results with regular operation and distorted voltage are essential to show the performance of the direct repetitive predictive power controller. Finally, from the results, the conclusions discuss the most critical characteristics to validate the proposed controller.

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全部化学•材料生命科学医学物理工程技术环境•农林材料科学地球科学法学管理学化学环境科学与生态学计算机科学教育学经济学农林科学人文科学生物学数学物理与天体物理心理学综合性期刊其他工业工程理学历史学农学文学信息工程

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International Journal of Electrical Power & Energy Systems

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