Electric Power Systems Research最新文献

A polynomial-time exact algorithm for the sectionalizing switch allocation problem 分段开关分配问题的多项式时间精确算法

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-07-28 DOI: 10.1016/j.epsr.2025.112016

Fábio Luiz Usberti , José Federico Vizcaino González , Laura Silva de Assis , Celso Cavellucci

引用次数: 0

Transient switching method for enhancing the synchronization stability of grid-forming inverters 提高并网逆变器同步稳定性的暂态切换方法

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-07-28 DOI: 10.1016/j.epsr.2025.112038

Zeyu Xie, Dongyuan Qiu, Bo Zhang, Yanfeng Chen

{"title":"Transient switching method for enhancing the synchronization stability of grid-forming inverters","authors":"Zeyu Xie, Dongyuan Qiu, Bo Zhang, Yanfeng Chen","doi":"10.1016/j.epsr.2025.112038","DOIUrl":"10.1016/j.epsr.2025.112038","url":null,"abstract":"<div><div>The synchronization stability of grid-forming (GFM) inverters under grid voltage sag is an important issue for maintaining stable operation in the power system. Most existing work pays more attention to the optimization of the active power control loop (APCL), ignoring the influence of the reactive power control loop (RPCL). In fact, APCL and RPCL are practically coupled during transient response. In this paper, a transient switching method is introduced to the RPCL, which switches the RPCL to constant voltage control during transient periods, with the aim of improving the synchronization stability of GFM inverters. The dynamics of the proposed scheme is first described, which is characterized by a large-signal model. Subsequently, the underlying stability mechanisms are detailed using phase portraits. It is demonstrated that a constant output voltage during the transient process not only broadens the stability region of the power angle but also offers a diminishment of the frequency deviation. Finally, experimental results are provided to verify the theoretical analysis.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"249 ","pages":"Article 112038"},"PeriodicalIF":3.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713690","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 setting of wind farm for frequency regulation based on evaluation of available kinetic energy 基于有效动能评估的风电场调频优化参数设置

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-07-28 DOI: 10.1016/j.epsr.2025.111997

Han Zhang , Feng Zhang , Athuman Salimu , Gang Zhang

{"title":"Optimal parameter setting of wind farm for frequency regulation based on evaluation of available kinetic energy","authors":"Han Zhang , Feng Zhang , Athuman Salimu , Gang Zhang","doi":"10.1016/j.epsr.2025.111997","DOIUrl":"10.1016/j.epsr.2025.111997","url":null,"abstract":"<div><div>When a wind farm (WF) provides frequency support for the power grid, the frequency regulation parameters of wind turbine generators (WTGs) are normally set by the control of the rotor-side converter and generally decoupled from the time-varying available rotor kinetic energy (RKE) in WTGs. Therefore, it may lead to a mismatch between the frequency regulation parameters and the frequency regulation ability of a WTG. The paper proposed an optimal WF frequency regulation parameter setting method, considering the available RKE evaluation and establishing the coupling relationship between frequency regulation parameters and available RKE. Firstly, by analyzing the spatiotemporal differences in wind speed within a WF using copula functions and the improved LSH<img>CD (Latin hypercube sampling-Cholesky decomposition) method, a forecasting scenario-based evaluation method of the WF available RKE for a future time is proposed. Secondly, to improve the system frequency dynamic response under power disturbance, a functional optimization model for WF frequency regulation parameters is constructed and offline solved with numerical method to realize the adaptive frequency regulation parameters set according to the time-varying available RKE of WF. Then the frequency regulation parameters of the WTGs within a WF are set according to the energy-weight ratio. Finally, a case study is conducted to verify the proposed available RKE evaluation and the effectiveness of the optimal frequency regulation parameter setting method. The results show that the energy evaluation method can effectively reduce evaluation error and the optimal frequency regulation parameter can improve the system frequency dynamic response, and prevent over-deceleration of WTG.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"249 ","pages":"Article 111997"},"PeriodicalIF":3.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713689","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

Faulty feeder detection for single-phase-to-ground fault in resonant grounding system based on transition resistance estimation 基于过渡电阻估计的谐振接地系统单相接地故障馈线检测

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-07-28 DOI: 10.1016/j.epsr.2025.112067

Xiaowei Wang , Linhui Fan , Xiangxiang Wei , Jie Gao , Fan Zhang , Xinqian Wang

{"title":"Faulty feeder detection for single-phase-to-ground fault in resonant grounding system based on transition resistance estimation","authors":"Xiaowei Wang , Linhui Fan , Xiangxiang Wei , Jie Gao , Fan Zhang , Xinqian Wang","doi":"10.1016/j.epsr.2025.112067","DOIUrl":"10.1016/j.epsr.2025.112067","url":null,"abstract":"<div><div>Aiming at the weak fault characteristics and poor adaptability of existing methods during high-impedance faults in 10 kV resonant grounding distribution systems, this paper proposes a fault detection method based on transition resistance estimation. Firstly, transient equivalent models of faulty and healthy feeders are constructed by using lumped parameters, and voltage-current matrix equations are obtained. Secondly, by analyzing the differences in the phase-frequency characteristics between lumped parameter model and distributed parameter model, the characteristic frequency band of each feeder is determined. Finally, the transition resistance value of each feeder is estimated by using the nonlinear least squares method, and thus the fault detection criterion is constructed. Specifically, if the transition resistance values of all feeders are greater than 10000Ω, it is determined as a bus fault. Conversely, the feeder corresponding to the minimum value is identified as faulty feeder. Simulation results and field tests show that it can accurately achieve fault detection in high-impedance faults and even complex grounding scenarios.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"249 ","pages":"Article 112067"},"PeriodicalIF":3.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713691","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

Grid-connected stability analysis and control strategy study of grid-forming converters considering frequency coupling 考虑频率耦合的并网变流器并网稳定性分析及控制策略研究

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-07-28 DOI: 10.1016/j.epsr.2025.112064

Shuangming Duan , Hao Wang , Wenjie Cai , Wenjie Shi , Junhui Li

{"title":"Grid-connected stability analysis and control strategy study of grid-forming converters considering frequency coupling","authors":"Shuangming Duan , Hao Wang , Wenjie Cai , Wenjie Shi , Junhui Li","doi":"10.1016/j.epsr.2025.112064","DOIUrl":"10.1016/j.epsr.2025.112064","url":null,"abstract":"<div><div>The Grid-forming converters' stability is examined to address the issue of the risk of instability of Grid-forming converters under a strong grid. To improve the grid-connected stability of Grid-forming converters, a simplified design approach based on virtual impedance is suggested. The concept of sequential impedance that takes frequency coupling into consideration is used to investigate how frequency coupling affects the output impedance characteristics. Using the Nyquist criteria and output impedance characteristics, Grid-forming converters' stability under different grid strengths is investigated, and the mechanism of grid-connected instability is shown. Based on the amplitude relationship between the grid impedance and the output impedance of Grid-forming converters, a quantitative design approach for virtual impedance is proposed, and the theoretical validity of the design is confirmed. Investigations are conducted into how the virtual impedance control technique affects Grid-forming converters' output impedance properties and how it enhances grid stability. The grid-connected Grid-forming converters simulation platform based on Virtual Synchronous Generator control is constructed, and the simulation results demonstrate the precision of the stability analysis theory and the efficacy of the control approach suggested in the research.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"249 ","pages":"Article 112064"},"PeriodicalIF":3.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713957","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

Transient electromagnetic interference on buried pipelines caused by double circuit overhead power lines 双回架空电力线路对埋地管线的瞬态电磁干扰

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-07-28 DOI: 10.1016/j.epsr.2025.112035

T.A. Papadopoulos , A.G. Martins-Britto , A.I. Chrysochos

{"title":"Transient electromagnetic interference on buried pipelines caused by double circuit overhead power lines","authors":"T.A. Papadopoulos , A.G. Martins-Britto , A.I. Chrysochos","doi":"10.1016/j.epsr.2025.112035","DOIUrl":"10.1016/j.epsr.2025.112035","url":null,"abstract":"<div><div>Analysis of the electromagnetic interference (EMI) between overhead lines (OHL) and nearby buried pipelines requires the accurate calculation of the self and mutual electrical parameters of all conductors in the arrangement. This becomes more important when investigating high-frequency (HF) EMI. Common approaches presume that the impact of the mutual capacitive coupling as well as the frequency-dependent soil characteristics can be disregarded. However, such approximations may result into estimates that overlook critical interactions. In this article, a recent formulation for calculating both the mutual impedance and admittance between overhead and underground conductors is adopted to investigate HF EMI on a pipeline caused by lightning strikes in a double-circuit OHL. Wave propagation characteristics and transient responses are computed using both frequency-dependent and constant properties soil models to evaluate the importance of the proposed approach on EMI studies; significant differences are observed. Comparisons are also carried out with approximate earth formulations, where the influence of the displacement current is disregarded. In addition, the impact of the pipeline burial depth is examined.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"249 ","pages":"Article 112035"},"PeriodicalIF":3.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713693","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

Four-level framework for enhancing active distribution network resilience to wind storms 提高主动配电网抗风暴能力的四级框架

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-07-26 DOI: 10.1016/j.epsr.2025.112027

Abolfazl Shabani , Mehdi Nafar , Taher Niknam

{"title":"Four-level framework for enhancing active distribution network resilience to wind storms","authors":"Abolfazl Shabani , Mehdi Nafar , Taher Niknam","doi":"10.1016/j.epsr.2025.112027","DOIUrl":"10.1016/j.epsr.2025.112027","url":null,"abstract":"<div><div>Traditional distribution system planning often overlooks resilience enhancement measures despite the increasing frequency and severity of extreme weather events. This paper presents a four-level resilience enhancement framework to address these challenges, focusing on replacing aging distribution lines, a major contributor to prolonged outages. The framework utilizes fragility curves to assess the impact of wind speed on poles, conductors, and wind turbines, with failure states evaluated through Monte Carlo Simulation (MCS). It introduces a resilience enhancement criterion incorporating repair costs, Distributed Generators (DGs) generation costs, and end-user interruption costs, estimated via a time-based penalty mechanism tailored for extreme weather events. The study also explores the role of local DGs in supporting critical loads through islanding after extreme events. The line hardening planning problem is formulated as a knapsack optimization problem and solved using Particle Swarm Optimization (PSO). The case study demonstrates that hardening lines connecting the distribution system to the upstream grid offers the greatest resilience benefits. Simulation results show that a coordinated line hardening strategy, combined with effective DG operation, can enhance system resilience by up to 80 %, underscoring the importance of integrating resilience planning into distribution system operation for better weather event preparedness and recovery.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"249 ","pages":"Article 112027"},"PeriodicalIF":3.3,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144711455","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

Day-ahead operation optimization of microgrid based on enhanced sardine optimization algorithm 基于增强型沙丁鱼优化算法的微电网日前运行优化

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-07-26 DOI: 10.1016/j.epsr.2025.112047

Yintong Lu, Liheng Liu, Jun Zhang, Yu Peng

引用次数: 0

Low-carbon collaborative scheduling method for EV charging stations based on robust optimization and cooperative game theory 基于鲁棒优化和合作博弈论的电动汽车充电站低碳协同调度方法

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-07-26 DOI: 10.1016/j.epsr.2025.112046

Guancheng Huang, Longhua Mu, Chongkai Fang

{"title":"Low-carbon collaborative scheduling method for EV charging stations based on robust optimization and cooperative game theory","authors":"Guancheng Huang, Longhua Mu, Chongkai Fang","doi":"10.1016/j.epsr.2025.112046","DOIUrl":"10.1016/j.epsr.2025.112046","url":null,"abstract":"<div><div>Modern electric vehicle charging stations (EVCSs) are usually integrated with renewable energy sources like photovoltaic (PV) units and energy storage systems (ESSs). This can help promote decarbonization and flexible management but also introduces several challenges, including uncertainties in electric vehicle (EV) charging behavior and PV power output, benefit distribution among participants, and the absence of low-carbonization mechanisms. To address this, this paper proposes a coordinated EVCSs scheduling method based on robust optimization and cooperative game theory. First, a multi-energy-flow coupling model of the EV-PV-ESS-Grid system is established, which quantifies the carbon reduction benefits of EVCS clusters by embedding carbon emission flow constraints. After that, a robust optimization model is formed to minimize total operating costs and carbon emission costs. Gaussian mixture modeling (GMM) and a distributionally robust chance constraint (DRCC) framework driven by residual-based PV uncertainty are integrated to handle the uncertainties in EV behavior and PV generation. Furthermore, based on cooperative game theory, a collaborative framework is designed for EVCS clusters, combining Shapley value-based benefit distribution with a carbon trading mechanism to incentivize low-carbon collaboration and ensure equitable benefit distribution. Simulation results of a test system with three interconnected EVCSs demonstrate that the proposed method can reduce total operating and carbon emission costs by 6.71 % and 7.9 % respectively. Additionally, the benefit imbalance issue is effectively resolved with the Shapley value-based benefit distribution method.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"249 ","pages":"Article 112046"},"PeriodicalIF":3.3,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144711456","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 real-time pricing scheme in power market with renewable energy considering different advertising attractiveness 考虑不同广告吸引力的可再生能源电力市场实时定价方案

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-07-26 DOI: 10.1016/j.epsr.2025.112058

Yeming Dai, Yaxin Liu

{"title":"A real-time pricing scheme in power market with renewable energy considering different advertising attractiveness","authors":"Yeming Dai, Yaxin Liu","doi":"10.1016/j.epsr.2025.112058","DOIUrl":"10.1016/j.epsr.2025.112058","url":null,"abstract":"<div><div>Increasing renewable energy and intensifying competition are becoming common in smart grid. How to make decisions to consistently attract users for power retailers has gradually become one of research focuses. However, the coordination of sustained attracting different types of users, competition among power retailers, and demand response between power retailers and users in continuous time has not been adequately considered. In view of the above gaps, this paper develops a real-time pricing scheme combined with advertising attractiveness by constructing the Stackelberg differential game model. Furthermore, this paper also explores the relationship between the maximum revenue of power retailers and advertising costs under this scheme, as well as the changes in users’ consumption of renewable energy after advertising intervention. Numerical simulations show that there is a significant non-monotonic relationship between the maximum revenue and price of power retailers and the advertising cost parameters, indicating that the increase in advertising investment does not always lead to a linear growth in revenue, but presents an obvious segmented feature. Under this scheme, the consumption of renewable energy by users is far greater than that of thermal power, which reflects the enhanced environmental awareness of users. Furthermore, the gap in advertising investment among different power retailers has a significant impact on their maximum revenue.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"249 ","pages":"Article 112058"},"PeriodicalIF":3.3,"publicationDate":"2025-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144711457","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