Electric Power Systems Research最新文献_第2页

A geospatial approach to detect and prioritize regularization of hook-based non-technical losses 一种地理空间方法来检测和优先考虑基于钩子的非技术损失的正则化

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2026-06-01 Epub Date: 2026-01-27 DOI: 10.1016/j.epsr.2026.112769

Matheus Menezes , Italo F.S. Silva , Felipe M. Feyh , Igor G. Vargas , Manuela B. de Lima , Pedro H.L. Dias , Romulo R. Viana , Guilherme V.B. Rubim , Carlos J.S. Moura , Auriane A.M. dos Santos , Lucas P.A. Pinheiro , Patrick C. Araujo , Pedro V. Bernhard , Thiago P. Freire , Joana K.A. Silva , Eduardo F.P. Dutra , Levi C. Santos , Weslley K.R. Figueredo , João D.S. Almeida , Luis J.E.R. Cabrejos , Aristófanes C. Silva

{"title":"A geospatial approach to detect and prioritize regularization of hook-based non-technical losses","authors":"Matheus Menezes , Italo F.S. Silva , Felipe M. Feyh , Igor G. Vargas , Manuela B. de Lima , Pedro H.L. Dias , Romulo R. Viana , Guilherme V.B. Rubim , Carlos J.S. Moura , Auriane A.M. dos Santos , Lucas P.A. Pinheiro , Patrick C. Araujo , Pedro V. Bernhard , Thiago P. Freire , Joana K.A. Silva , Eduardo F.P. Dutra , Levi C. Santos , Weslley K.R. Figueredo , João D.S. Almeida , Luis J.E.R. Cabrejos , Aristófanes C. Silva","doi":"10.1016/j.epsr.2026.112769","DOIUrl":"10.1016/j.epsr.2026.112769","url":null,"abstract":"<div><div>Illegal electricity connections are a major source of non-technical losses, especially in areas lacking advanced metering infrastructure. These connections increase operational costs, reduce grid reliability, and transfer economic overload to regular consumers. We propose a building-level, hybrid geospatial methodology to detect and prioritize the regularization of potential clandestine connections caused by hook-based theft. Our approach combines satellite imagery, geospatial filtering, computer vision, and human-in-the-loop validation to identify and cluster irregular buildings based on their financial return on regularization. Validated with real data from Pará, Brazil, the method achieved an average accuracy of 83.05% across over 10,000 inspected sites, with regional peaks of 94.%. Clustering algorithms such as DBSCAN efficiently grouped illegal connections by geographic and financial features, enabling more effective allocation of on-site operations. This framework is adaptable to distinct scenarios, and supports large-scale, data-driven non-technical losses mitigation, improving revenue recovery, grid safety, and tariff fairness.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"255 ","pages":"Article 112769"},"PeriodicalIF":4.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146078815","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 stochastic placement of wind turbines and soft open points in distribution networks 配电网中风力发电机和软开口处的最优随机布局

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2026-06-01 Epub Date: 2026-01-20 DOI: 10.1016/j.epsr.2026.112756

Mahzan Dalawir , Maher Azzouz , Ahmed Azab

引用次数: 0

Electric vehicle charging forecasting: Performance comparison and mathematical analysis of LSTM and neural ODE models 电动汽车充电预测：LSTM与神经ODE模型的性能比较与数学分析

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2026-06-01 Epub Date: 2026-01-23 DOI: 10.1016/j.epsr.2026.112761

Shakir Uzzaman, Sancoy Barua, Ahmad Afif Alam, Yuki Osone, Daisuke Kodaira

{"title":"Electric vehicle charging forecasting: Performance comparison and mathematical analysis of LSTM and neural ODE models","authors":"Shakir Uzzaman, Sancoy Barua, Ahmad Afif Alam, Yuki Osone, Daisuke Kodaira","doi":"10.1016/j.epsr.2026.112761","DOIUrl":"10.1016/j.epsr.2026.112761","url":null,"abstract":"<div><div>Electric vehicles (EVs) are crucial for a sustainable future, but their unpredictable charging patterns threaten power grid stability. As EV adoption grows, accurate EV charging forecasts are essential to prevent system failures and minimize financial losses. Traditional approaches are often limited, which has led to advanced data-driven solutions. Deep learning methods, particularly Long Short-Term Memory (LSTM) networks, have shown promise for sequential data but perform poorly when time intervals are irregular. Neural Ordinary Differential Equation (ODE) models overcome this limitation by treating temporal data as a continuous flow, improving the handling of irregular intervals. This is the first study to use Neural ODE for EV charging demand prediction, addressing the limitations of traditional recurrent models, including LSTM and its variants, and demonstrating the advantages of continuous-time modeling. Both architectures were compared using several open-access EV charging datasets. Neural ODE consistently achieved lower mean absolute error (MAE) values than LSTM across all three datasets (0.045, 0.024, and 0.121 vs. 0.072, 0.054, and 0.18), corresponding to improvements of 32 %–55 %. This performance difference arises from fundamental architectural distinctions. By modeling temporal data as a continuous flow, Neural ODE better captures irregular patterns in real-world charging behavior. Mathematical analysis and additional testing across hyperparameter settings confirmed the robustness of Neural ODE. These findings highlight the potential of continuous-time neural models for accurate and reliable EV charging demand forecasting in smart grid applications.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"255 ","pages":"Article 112761"},"PeriodicalIF":4.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146039170","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

Bird mortality mitigation on South Africa’s sub-transmission network 减少南非次级传播网络的鸟类死亡率

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2026-06-01 Epub Date: 2026-01-15 DOI: 10.1016/j.epsr.2026.112721

Warren Farmer, Ulrich Minnaar

引用次数: 0

A second-order generalized integrator phase-locked loop with a cascaded structure incorporating a low-pass filter 具有级联结构的二阶广义积分器锁相环，其中含有低通滤波器

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2026-06-01 Epub Date: 2026-01-30 DOI: 10.1016/j.epsr.2026.112780

Yan Wang , Guangchen Liu , Guizhen Tian , Jianwei Zhang , Yuanyuan Wu , Weihong Zhao

{"title":"A second-order generalized integrator phase-locked loop with a cascaded structure incorporating a low-pass filter","authors":"Yan Wang , Guangchen Liu , Guizhen Tian , Jianwei Zhang , Yuanyuan Wu , Weihong Zhao","doi":"10.1016/j.epsr.2026.112780","DOIUrl":"10.1016/j.epsr.2026.112780","url":null,"abstract":"<div><div>Renewable energy sources (RESs) have achieved widespread global adoption owing to their favourable environmental impacts, together with their inherent sustainability, cost-effectiveness, and controllability. A phase-locked Loop (PLL) is one of the most widely used synchronisation techniques owing to its speed and robustness. This study was developed to address the problem that the traditional second-order generalised integrator-based PLL(SOGI-PLL) fails to achieve correct phase locking under non-ideal grid conditions in single-phase grid synchronization, using a cascaded structure that combines the traditional SOGI with a SOGI incorporating a LPF(SOGI-LPF) .Then, the transfer functions of the improved method and the traditional methods were analysed using Bode diagrams and root locus techniques. The improved PLL was tested on the RTDS/RCP hardware-in-the-loop experimental platform. Moreover, to compare its performance with that of the SOGI and SOGI-LPF methods in terms of indicators such as settling time, and phase error, several scenarios were developed. As a result, the improved PLL demonstrates the fastest dynamic response and, completely rejects four operating conditions—single-phase voltage sag, phase jump, low-order harmonics, and DC offset in the grid. Furthermore, compared with the first two PLLs, the transient phase-locking error of the improved PLL is reduced by up to 80 %.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"255 ","pages":"Article 112780"},"PeriodicalIF":4.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146078830","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

Power quality control strategy of double-layer multi-coordination for active distribution networks 有功配电网双层多协调电能质量控制策略

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2026-06-01 Epub Date: 2026-02-09 DOI: 10.1016/j.epsr.2026.112813

Guodong Cheng , Xiaojie Wu , Zhongke Yin , Juan Zhou , Kaiping Qu

{"title":"Power quality control strategy of double-layer multi-coordination for active distribution networks","authors":"Guodong Cheng , Xiaojie Wu , Zhongke Yin , Juan Zhou , Kaiping Qu","doi":"10.1016/j.epsr.2026.112813","DOIUrl":"10.1016/j.epsr.2026.112813","url":null,"abstract":"<div><div>The integration of large-scale renewable energy into distribution networks has exacerbated power quality (PQ) issues such as voltage violation and harmonic distortion, while the PQ regulation capabilities of associated power electronic converters remain underutilized. This paper proposes a double-layer multi-coordination PQ control strategy for active distribution networks, using coordinated photovoltaic (PV) inverter, energy storage system (ESS) converter, and SVG/SC. First, a double-layer control architecture is proposed to prioritize regulation at the distribution transformer area before the feeder layer, based on the network topology. Second, the causes and mitigation mechanisms of voltage violation and harmonic distortion are analyzed. Optimization models are then formulated for both control layers. To address the high-dimensional optimization challenge in the feeder layer, a secondary partitioning algorithm incorporating power sensitivity and reserve capacity is proposed. Case studies on a modified IEEE 33-node system under two typical scenarios demonstrate that the proposed strategy effectively reduces voltage deviation, harmonic distortion, and power losses, ensuring both secure and economical operation of active distribution networks.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"255 ","pages":"Article 112813"},"PeriodicalIF":4.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146188568","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 multi-band simultaneous wireless power and data transfer system using multiple relay coils 一种使用多个继电器线圈的多频带同步无线供电和数据传输系统

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2026-06-01 Epub Date: 2026-02-09 DOI: 10.1016/j.epsr.2026.112792

Zhijun Wu , Linlin Tan , Xueliang Huang

{"title":"A multi-band simultaneous wireless power and data transfer system using multiple relay coils","authors":"Zhijun Wu , Linlin Tan , Xueliang Huang","doi":"10.1016/j.epsr.2026.112792","DOIUrl":"10.1016/j.epsr.2026.112792","url":null,"abstract":"<div><div>This paper proposes a multi-band simultaneous wireless power and data transfer system based on multi-relay coils, designed to meet the power supply and communication needs of online monitoring devices in high-voltage transmission lines. The system's coupling mechanism employs a high-order compensation topology to establish multiple resonant bands, creating one power transfer channel and three data transfer channels. Additionally, the relay coils are formed by alternately arranging DD-type and rectangular coils to eliminate cross-coupling between non-adjacent relay coils. An equivalent circuit model of the system was developed, and the operational characteristics of the multiple resonant bands, voltage gain distribution, and parameter optimization design methods were analyzed. Finite element simulation results indicate that the proposed system can be embedded inside a 35 kV composite insulator, with an electric field distribution that meets insulation requirements. Experimental results show that the system can transfer 18.7 W of power with an efficiency of 73.5%, while achieving accurate demodulation of modulated data in the data transfer channel at a rate of 6 kbps.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"255 ","pages":"Article 112792"},"PeriodicalIF":4.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146188579","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 hierarchical optimization framework for the real-time operation of hybrid hydrogen-battery microgrids considering solid oxide fuel cell start-up and waste heat recovery 考虑固体氧化物燃料电池启动和余热回收的混合氢电池微电网实时运行分层优化框架

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2026-06-01 Epub Date: 2026-01-17 DOI: 10.1016/j.epsr.2026.112738

Ahmed A. Emam , H.E. Keshta , K.M. Abdel-Latif , H.K. Shaker

{"title":"A hierarchical optimization framework for the real-time operation of hybrid hydrogen-battery microgrids considering solid oxide fuel cell start-up and waste heat recovery","authors":"Ahmed A. Emam , H.E. Keshta , K.M. Abdel-Latif , H.K. Shaker","doi":"10.1016/j.epsr.2026.112738","DOIUrl":"10.1016/j.epsr.2026.112738","url":null,"abstract":"<div><div>The interconnection of multi-Microgrids (MGs) and integration with the utility grid require an efficient Energy Management System (EMS) to achieve higher flexibility, enhanced resilience, and reduced operational cost. This paper develops an effective EMS based on a two-stage optimization framework (Day-Ahead Scheduling and Real-Time Scheduling), incorporating Demand Side Management (DSM) of two MGs interconnected together and connected to utility grid.</div><div>The proposed system comprises a hybrid energy storage configuration, a hydrogen energy system comprising (Solid Oxide Fuel Cell (SOFC), Solid Oxide Electrolyzer (SOEL), and hydrogen tank), and batteries. The proposed EMS considers the start-up period (estimated at 15 min) of the high-rating SOFC, a factor neglected in many previous studies. Also, the waste heat from the SOFC is recovered to power a Gas Turbine Generator (GTG), thereby enhancing the overall system efficiency. This paper uses an advanced metaheuristic technique, Dream Optimization Algorithm (DOA), to determine the optimal day-ahead set points for the Hybrid Energy Storage System (HESS) to minimize operational cost.</div><div>Furthermore, an Artificial Neural Network (ANN) based Real-Time EMS (RTEMS) is applied to handle real-time changes in the forecasted data. The simulation results validate the effectiveness of the proposed RTEMS, showing a significant reduction in the operational cost.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"255 ","pages":"Article 112738"},"PeriodicalIF":4.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146039107","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

Short-Term photovoltaic power forecasting based on K-means++ clustering, secondary decomposition and TCN-BiLSTM-Attention model 基于k -means++聚类、二次分解和TCN-BiLSTM-Attention模型的光伏短期功率预测

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2026-06-01 Epub Date: 2026-01-20 DOI: 10.1016/j.epsr.2026.112749

Jianwei Liang , Jie Yue , Yanli Xin , Shuxin Pan , Jiaming Tian , Jingxuan Sun

{"title":"Short-Term photovoltaic power forecasting based on K-means++ clustering, secondary decomposition and TCN-BiLSTM-Attention model","authors":"Jianwei Liang , Jie Yue , Yanli Xin , Shuxin Pan , Jiaming Tian , Jingxuan Sun","doi":"10.1016/j.epsr.2026.112749","DOIUrl":"10.1016/j.epsr.2026.112749","url":null,"abstract":"<div><div>Accurate short-term photovoltaic (PV) power forecasting is crucial for grid operation and energy dispatch. To further enhance the accuracy of PV power prediction, this paper proposes a short-term prediction method based on secondary decomposition, temporal convolutional networks (TCNs), bidirectional long short-term memory (BiLSTM) and an attention mechanism. Firstly, the Spearman correlation coefficient (SCC) is used to screen key meteorological features and reduce input redundancy. Secondly, the K-means++ algorithm is applied to cluster historical PV power data into three weather types, i.e. sunny, cloudy and rainy days. Subsequently, to reduce the non-stationarity and complexity of PV power series, variational mode decomposition (VMD) is employed to perform primary decomposition. Then, complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN) is applied to the residual components for secondary decomposition, thereby obtaining more stable and informative subsequences. A TCN-BiLSTM-Attention hybrid model is further constructed to capture long-term dependencies, bidirectional temporal dynamics and salient features from the decomposed subsequences for PV power prediction, effectively handling its inherent intermittency and variability. Finally, the predicted values of all subsequences are superimposed to obtain the final prediction result. Simulation experiments with six benchmark models on two different datasets show that the proposed model can effectively improve prediction accuracy.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"255 ","pages":"Article 112749"},"PeriodicalIF":4.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146039100","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

Structural optimization of multi-chamber arrester and research on arc extinguishing effect under multiple lightning strikes 多腔避雷器结构优化及多次雷击灭弧效果研究

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2026-06-01 Epub Date: 2026-01-24 DOI: 10.1016/j.epsr.2026.112773

Ying Chen , Xinqiang Wan , Yuhang Chen

引用次数: 0