Electric Power Systems Research最新文献_第9页

Evaluation of battery energy storage system to provide virtual transmission service

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-27 DOI: 10.1016/j.epsr.2025.111570

Qiushi Wang, Xingpeng Li

{"title":"Evaluation of battery energy storage system to provide virtual transmission service","authors":"Qiushi Wang, Xingpeng Li","doi":"10.1016/j.epsr.2025.111570","DOIUrl":"10.1016/j.epsr.2025.111570","url":null,"abstract":"<div><div>An immediate need in the transmission system is to find alternative solutions that improve system operation and defer the need for new transmission lines. This study comprehensively evaluates the performance and economic benefits of short-term operation of using battery energy storage systems (BESS) as virtual transmission (VT) to promote power transfer across distant regions. Specifically, this work implements various day-ahead energy scheduling models to analyze the impact of VT on system operation cost, network congestion, model computational time, and market performance. The performance of VT is compared with three alternative network congestion mitigation methods, including building new high-voltage physical transmission lines, cost-driven battery energy storage systems, and network reconfiguration, as well as combinations of two of the aforementioned methods. The benchmark day-ahead scheduling model is a traditional security-constrained unit commitment model without system upgrades or other network congestion mitigation. Numerical simulations conducted on the IEEE 24-bus system demonstrate that VT provides a 14 % operational cost reduction and 34 % congested line relief compared to the base case. Compared to other examined schemes, VT is the only one comparable to physical transmission lines that can provide satisfying congestion relief and operation cost reduction without significantly sacrificing computing time and load payment.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"244 ","pages":"Article 111570"},"PeriodicalIF":3.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment method of new energy hosting capacity in distribution grid considering rotary power flow controllers and demand response

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-27 DOI: 10.1016/j.epsr.2025.111566

Junqing Jia , Tianyu Wu , Jia Zhou , Wenchao Cai

{"title":"Assessment method of new energy hosting capacity in distribution grid considering rotary power flow controllers and demand response","authors":"Junqing Jia , Tianyu Wu , Jia Zhou , Wenchao Cai","doi":"10.1016/j.epsr.2025.111566","DOIUrl":"10.1016/j.epsr.2025.111566","url":null,"abstract":"<div><div>In response to the imbalance of energy in the spatiotemporal dimension caused by the high penetration of new energy, a method for evaluating the hosting capacity of distributed new energy (DNE) is proposed, which takes into account the rotary power flow controllers (RPFC) and demand response (DR). Firstly, models for the RPFC and DR are developed. Then, a two-layer optimization model for the hosting capacity of DNE is established. In this model, the upper layer aims to maximize the hosting capacity by optimizing the integration capacity of new energy, while the lower layer aims to minimize the system's overall operating costs by adjusting the output of various devices. A hybrid optimization algorithm based on grey wolf optimization (GWO) and second-order cone optimization is used to solve the model. Finally, the IEEE 33-node system is used as a simulation case to analyze and validate the model under different scenarios. The results indicate that the maximum hosting capacity for renewable energy reaches 2812.2 kW in Scenario 4, an increase of 13.87 % compared to Scenario 1. Moreover, the total operational cost is the lowest among all scenarios, demonstrating that the optimization strategy can significantly enhance the hosting capacity and effectively reduce operational costs.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"244 ","pages":"Article 111566"},"PeriodicalIF":3.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A calculation method of impedance matrix for three-core submarine cables based on measurement of sequence impedance and mutual impedance parameters in multi-conductor loop

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-27 DOI: 10.1016/j.epsr.2025.111543

Wenxia Pan, Dapeng Zhang

{"title":"A calculation method of impedance matrix for three-core submarine cables based on measurement of sequence impedance and mutual impedance parameters in multi-conductor loop","authors":"Wenxia Pan, Dapeng Zhang","doi":"10.1016/j.epsr.2025.111543","DOIUrl":"10.1016/j.epsr.2025.111543","url":null,"abstract":"<div><div>The three-core submarine cables have been widely used in offshore wind farm engineering as an important power transmission channel. The conventional methods for calculating the impedance matrix of submarine cables exhibits deviation between the computed and actual results. This is primarily due to their failure to fully consider the structural characteristics, specialized electromagnetic materials, and variations in burial depth of the cables. These limitations impact the accuracy of electrical characteristic calculations for submarine cables. To address factors affecting the accuracy of the impedance matrix calculations, this paper analyzes the relationship between measured sequence impedance of each metal layer and impedance matrix in three-core submarine cables. It derives equations to obtain the impedance matrix from sequence impedance. In addition, measurement methods for the sequence impedance and mutual impedance of each metal layer are provided to solve the equations. The impedance matrix of a 220 kV three-core submarine cable was calculated using the equations and the proposed measurement methods. The calculated impedance matrix is compared and analyzed against that obtained through finite element method. The results indicate that the proposed calculation and measurement approach is more effective, feasible, and with higher accuracy for the impedance matrix of laid three-core submarine cables.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"244 ","pages":"Article 111543"},"PeriodicalIF":3.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A distributed dispatch approach for district-level electric-heat-gas integrated energy systems considering carbon emission and green certificate trading

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-27 DOI: 10.1016/j.epsr.2025.111541

Jun Yang , Lincheng Lei , Dongyu Liu , Wenyue Luo

{"title":"A distributed dispatch approach for district-level electric-heat-gas integrated energy systems considering carbon emission and green certificate trading","authors":"Jun Yang , Lincheng Lei , Dongyu Liu , Wenyue Luo","doi":"10.1016/j.epsr.2025.111541","DOIUrl":"10.1016/j.epsr.2025.111541","url":null,"abstract":"<div><div>With a particular focus on enhancing energy consumption efficiency and addressing the challenge of low-carbon energy supply, this paper proposes a distributed dispatch approach for a district-level electric-heat-gas integrated energy system, incorporating an integrated mechanism for trading carbon credits and green certificates. A hierarchical dispatch framework is constructed, dividing the system into distribution networks and multi-energy microgrids, which addresses the limitations of existing centralized approaches by ensuring privacy and autonomy for different operators. On the distribution network side, a stepped carbon emission trading is considered, prioritizing both economic feasibility and carbon neutrality. On the side of multi-energy micro-networks, both carbon and green certificate trading are considered. Each micro-network adjusts its own dispatch approach to achieve maximum benefits. Then, through carbon quotas and renewable energy quotas, the low-carbon objective is converted into the system cost, which becomes part of the total cost. Finally, the interaction power at the interface connecting the upper and lower tiers serves as the coupling variable, which is decoupled and solved by the analysis target cascade. The dispatch approach is verified through simulations on an integrated heating and cooling network based on the IEEE 33-node distribution grid and 20-bus natural gas grid, demonstrating its effectiveness in achieving both economic and low-carbon objectives.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"244 ","pages":"Article 111541"},"PeriodicalIF":3.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The influence of Shield Wires on GIC simulations for realistic power grids

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-27 DOI: 10.1016/j.epsr.2025.111540

Rute Rodrigues Santos , Maria Alexandra Pais , João M.R. Cardoso , Joana Alves Ribeiro , Fernando J.G. Pinheiro

引用次数: 0

Multi-parameter optimization and design of self-triggered low voltage hybrid DC circuit breaker based on machine learning

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-26 DOI: 10.1016/j.epsr.2025.111560

Zhaozi Zhang , Caizhi Gao , Weidong Cao , Qian Wang , Silei Chen , Xingwen Li , Yinfang Huang , Zuoyong Gong

{"title":"Multi-parameter optimization and design of self-triggered low voltage hybrid DC circuit breaker based on machine learning","authors":"Zhaozi Zhang , Caizhi Gao , Weidong Cao , Qian Wang , Silei Chen , Xingwen Li , Yinfang Huang , Zuoyong Gong","doi":"10.1016/j.epsr.2025.111560","DOIUrl":"10.1016/j.epsr.2025.111560","url":null,"abstract":"<div><div>The low-voltage direct current (LVDC) hybrid circuit breaker (HCB), with advantages of low conduction loss and high breaking performance is better to meet the application needs of photovoltaic system. Among these, self-triggered hybrid circuit breakers (STHCBs) based on natural commutation have become an important development direction for LVDC HCBs due to their simple structure and selective protection. However, existing design methods do not adequately consider the influence of multiple parameters, resulting in unreliable current commutation during interruption. To address these issues, this paper proposes a machine learning-based multi-parameter optimization method. The method employed Long Short-Term Memory (LSTM) algorithm to predict the interruption waveforms of mechanical switches under different short-circuit fault conditions as an input to the optimization. In addition, an interruption model of HCBs was developed, which comprehensively considered power electronic device characteristics, arc behavior and drive circuit. Based on the theoretical analysis and predicted waveforms, we used Genetic Algorithm (GA) to determine the optimal design parameters for the corresponding interruption waveforms. Experiment results confirm that this method can effectively enhance the interruption reliability of STHCBs while also demonstrates adaptability. The proposed method provides technical reference for the design of LVDC HCBs.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"244 ","pages":"Article 111560"},"PeriodicalIF":3.3,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimal parameter tuning for voltage control thresholds in distribution networks using MOPSO and Pareto fronts

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-26 DOI: 10.1016/j.epsr.2025.111552

Nien-Che Yang, Chen-Hong Su, Hao Yang

引用次数: 0

Enhancing overcurrent relay performance in distributed generation networks: A novel non-standard time-current characteristic approach

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-25 DOI: 10.1016/j.epsr.2025.111542

Mian Rizwan , Ciwei Gao , Xingyu Yan , Muhammad Usman , Shafiq Ahmad , Abdelaty Edrees Sayed , N.M. Adamali Shah

{"title":"Enhancing overcurrent relay performance in distributed generation networks: A novel non-standard time-current characteristic approach","authors":"Mian Rizwan , Ciwei Gao , Xingyu Yan , Muhammad Usman , Shafiq Ahmad , Abdelaty Edrees Sayed , N.M. Adamali Shah","doi":"10.1016/j.epsr.2025.111542","DOIUrl":"10.1016/j.epsr.2025.111542","url":null,"abstract":"<div><div>High-speed operation of protection relays to isolate faulted systems is critical for active distribution networks. The overcurrent relay with standard time-current characteristics is vulnerable to delayed operation or loss of sensitivity due to fault current contribution from distributed generation. The non-standard time current characteristics (NSTCCs) have been proposed in the literature to make the relay operation steadfast but it breach the relay operation time minimum constraint. In this paper, a novel non-standard time current characteristics has been proposed with a logarithm function to achieve the fast relay operation time (ROT) and rehabilitate the sensitivity of the backup relay at a lower fault current magnitude. Further, a new auxiliary variable is introduced to provide the additional time delay to avoid the oversensitive behavior of NSTCC or offset in ROT to make it faster regardless of the fault current. The stringent criteria are defined to set the boundary limits of the auxiliary variable. The proposed scheme is validated on IEEE-9, IEEE-33, and meshed IEEE-8 bus systems using ETAP and MATLAB. For the IEEE-9 bus system, it reduced ROT by 31.55% and 23.34% compared to NSTCC and STCC, respectively, while for the IEEE-33 bus system, it achieved reductions of 55.66% and 25.16%. While other schemes violated relay operation time and coordination time interval constraints, the proposed scheme met all constraints, demonstrating superior performance and reliability.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"244 ","pages":"Article 111542"},"PeriodicalIF":3.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143478834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ampacity improvement of high voltage submarine cables installed in J-tubes

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-25 DOI: 10.1016/j.epsr.2025.111562

Ruisong Zhang , Shihao Zhang , Maozhou Wang , Jia Peng , Zhengshi Chang , Junbo Deng , Shaohua Wang , Yong Yang , Yu Ma

{"title":"Ampacity improvement of high voltage submarine cables installed in J-tubes","authors":"Ruisong Zhang , Shihao Zhang , Maozhou Wang , Jia Peng , Zhengshi Chang , Junbo Deng , Shaohua Wang , Yong Yang , Yu Ma","doi":"10.1016/j.epsr.2025.111562","DOIUrl":"10.1016/j.epsr.2025.111562","url":null,"abstract":"<div><div>J-tubes are commonly employed to safeguard the high voltage submarine cables when extending to the offshore converter platforms, ensuring the security of cables. However, J-tubes hinder the heat dissipation and derate the cable ampacity. In this paper, using COMSOL Multiphysics 6.0 finite element simulation software, the model of <em>a</em> ± 400 kV DC submarine cable installed in J-tube is established. Simulation results reveal that the middle-upper part of the J-tube air section is the bottleneck position for the ampacity. Multiple factors, including the length of the air section, natural wind speed, and ambient temperature, are investigated to determine their influence on the ampacity of cables laid in J-tubes. Perforations on the side wall of the J-tube and the top platform for convective ventilation are proposed to enhance the ampacity. Additionally, the effects of certain influencing factors on the effectiveness of ventilation are analyzed, which indicate that adding openings on the side wall, increasing wind speed and lowering airflow temperature at the platform can improve the heat dissipation can greatly enhance the ampacity of the submarine cable. Under the most harsh summer conditions, the ampacity can be increased by at least 23.8 %. The research findings provide a new solution for guiding the design of J-tubes to enhance the ampacity of subsea cables in the J-tube segment.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"244 ","pages":"Article 111562"},"PeriodicalIF":3.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143478960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solar powered on-board charging system utilizing coupled inductor high gain converter with G2 V and V2 G operations

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-02-24 DOI: 10.1016/j.epsr.2025.111553

Ajay Singh , Manoj Badoni , Anjanee Kumar Mishra

{"title":"Solar powered on-board charging system utilizing coupled inductor high gain converter with G2 V and V2 G operations","authors":"Ajay Singh , Manoj Badoni , Anjanee Kumar Mishra","doi":"10.1016/j.epsr.2025.111553","DOIUrl":"10.1016/j.epsr.2025.111553","url":null,"abstract":"<div><div>This work proposes an efficient configuration for a <strong>solar-powered on-board charging system</strong> utilizing a <strong>coupled inductor high-gain converter</strong> with <strong>Grid-to-Vehicle (G2</strong> <strong>V)</strong> and <strong>Vehicle-to-Grid (V2</strong> <strong>G)</strong> operations. The bidirectional power flow capability of an on-board charger (OBC) benefits utilities and enhances the functionality of light electric vehicles (LEVs). The design of an OBC consists of an active front-end converter (AFC) and a proposed bidirectional high gain converter (BHGC). The AFC restricts the THD of supply current within the limits specified in international standards. The BHGC converter is designed to control the charging and discharging operations in LEVs. The developed BHGC aims to minimize ripples in the charging and discharging currents. This converter can operate efficiently in both Grid-to-Vehicle (G2 V) and Vehicle-to-Grid (V2 G) modes, utilizing two energy sources viz. a utility grid and solar PV. In addition, the brushless DC (BLDC) motor is used as a traction motor in this work due to its unique features like high density, low cost, simple control, etc. The presented EV with a charging system is simulated in the MATLAB/Simulink platform, and real-time validation is performed using the Opal-RT platform. The results obtained through both the simulation and real-time prototype indicate the effectiveness of the developed charging scheme with the proposed BHG converter.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"244 ","pages":"Article 111553"},"PeriodicalIF":3.3,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0