Electric Power Systems Research最新文献

Early identification of anomalous states in electrical lines based on parameter optimization VMD and Dilated CNN-BiLSTM 基于参数优化VMD和扩展CNN-BiLSTM的电气线路异常状态早期识别

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-11 DOI: 10.1016/j.epsr.2025.112353

Hongguang Pan , Jinghe Zhang , Yi Zhang , Li Li , Shulin Liu , Li Ma

{"title":"Early identification of anomalous states in electrical lines based on parameter optimization VMD and Dilated CNN-BiLSTM","authors":"Hongguang Pan , Jinghe Zhang , Yi Zhang , Li Li , Shulin Liu , Li Ma","doi":"10.1016/j.epsr.2025.112353","DOIUrl":"10.1016/j.epsr.2025.112353","url":null,"abstract":"<div><div>Low-voltage electrical lines are critical infrastructure, and early anomaly identification is essential for preventing electrical fires and ensuring system stability. Traditional identification methods relying on temperature sensors suffer from low sensitivity and delayed response, while existing artificial intelligence based approaches face challenges in handling nonstationary signals. This paper proposes a novel hybrid model integrating a parameter-optimization variational mode decomposition (VMD) with a dilated convolutional neural network and bidirectional long short-term (Dilated CNN-BiLSTM) to enhance anomaly identification accuracy and robustness. First, Tent chaotic mapping and an adaptive positive cosine algorithm are employed to refine the northern goshawk optimization (NGO), which is then applied to VMD parameters, effectively suppressing mode mixing to improve VMD decomposition. The power spectrum entropy, alignment entropy and fuzzy entropy of the IMFs with significant correlation post-decomposition are computed to construct the feature information matrix. Second, the obtained feature data are input into the Dilated CNN-BiLSTM. Experimental results indicate that the proposed module achieves 98.6% accuracy across 8 states, and maintains high accuracy under noise interference. This method outperforms the existing methods used for the same purposes, validating the effectiveness and dependability of the proposed hybrid framework, providing an efficient solution for early fault warning in electrical lines.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"252 ","pages":"Article 112353"},"PeriodicalIF":4.2,"publicationDate":"2025-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145271023","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

Comparative analysis of zeta converter and conventional DC-DC converter using mother optimized FOPID controller in electric vehicles 基于母优化FOPID控制器的电动汽车zeta变换器与传统DC-DC变换器的比较分析

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-11 DOI: 10.1016/j.epsr.2025.112262

K. Shobha Rani, V. Nandagopal

{"title":"Comparative analysis of zeta converter and conventional DC-DC converter using mother optimized FOPID controller in electric vehicles","authors":"K. Shobha Rani, V. Nandagopal","doi":"10.1016/j.epsr.2025.112262","DOIUrl":"10.1016/j.epsr.2025.112262","url":null,"abstract":"<div><div>Conventional chargers often employ diode bridge rectifiers, which result in a low power factor and inefficient energy utilization. This research compares the Zeta converter against a conventional buck-boost direct current (DC) to DC converter in electric vehicles (EVs) application to enhance energy conversion efficiency, with particular attention to battery state of charge (SOC) and driving range. A Fractional Order Proportional Integral Derivative (FOPID) Controller is implemented to improve dynamic performance and system stability. The controller parameters are optimally tuned using the Mother Optimization Algorithm (MOA), a recent swarm intelligence-based metaheuristic inspired by maternal nurturing behavior. The fractional order proportional integral derivative (FOPID) controller regulates the Zeta converter's duty cycle through pulse width modulation (PWM). Results show a high efficiency of 99 % and a fast settling time of 0.19 s when supplying a resistive load at rated power. A low Total Harmonic Distortion (THD) of about 2 % was obtained under steady-state operation, while a significant voltage gain of up to 13 was achieved under rated input conditions. These outcomes demonstrate the effectiveness of the proposed system, highlighting its potential for extending driving range and reducing charging losses in real-world EV systems.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"252 ","pages":"Article 112262"},"PeriodicalIF":4.2,"publicationDate":"2025-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145271408","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 data-driven method for the development of system frequency response models for frequency stability analysis 一种用于频率稳定分析的系统频率响应模型的数据驱动方法

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-10 DOI: 10.1016/j.epsr.2025.112329

Achilleas I. Sfetkos , Eleftherios O. Kontis , Theofilos A. Papadopoulos , Grigoris K. Papagiannis

{"title":"A data-driven method for the development of system frequency response models for frequency stability analysis","authors":"Achilleas I. Sfetkos , Eleftherios O. Kontis , Theofilos A. Papadopoulos , Grigoris K. Papagiannis","doi":"10.1016/j.epsr.2025.112329","DOIUrl":"10.1016/j.epsr.2025.112329","url":null,"abstract":"<div><div>Modern power systems are characterized by reduced inertia and primary frequency response as a result of the replacement of conventional synchronous generators (SG) with converter-interfaced renewable energy sources, deteriorating frequency stability. In this context, a novel data-driven methodology is proposed to derive an equivalent aggregated system frequency response (SFR) model that is capable of simulating the power system frequency response following a disturbance. The methodology utilizes active power and frequency response measurements to derive the SFR model through a nonlinear least squares optimization approach. The accuracy of the proposed method is validated by Monte Carlo simulations conducted on the IEEE 9-Bus test system, under both transient events and normal operating conditions. The validation is based on two main aspects. Initially, the model parameters estimated using the proposed data-driven approach are compared with those obtained through analytical calculations. Further, the effectiveness of the proposed approach is evaluated by determining the frequency response of the examined power system under varying types and amplitudes of disturbances. Results verify that in all scenarios the proposed approach provides results similar to those obtained via detailed non-linear dynamic simulations.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"252 ","pages":"Article 112329"},"PeriodicalIF":4.2,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145271410","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

Hybrid WbOA–APINN framework for sustainable and intelligent energy management in renewable microgrids with hybrid energy storage 具有混合储能的可再生微电网中可持续和智能能源管理的混合WbOA-APINN框架

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-10 DOI: 10.1016/j.epsr.2025.112349

Jegadeesh Kumar R , Vijayakumar P , Santhosh Paramasivam , Amit Kumar , Gianluca Gatto

{"title":"Hybrid WbOA–APINN framework for sustainable and intelligent energy management in renewable microgrids with hybrid energy storage","authors":"Jegadeesh Kumar R , Vijayakumar P , Santhosh Paramasivam , Amit Kumar , Gianluca Gatto","doi":"10.1016/j.epsr.2025.112349","DOIUrl":"10.1016/j.epsr.2025.112349","url":null,"abstract":"<div><div>Energy management (EM) in renewable-integrated microgrids (MGs) with hybrid energy storage systems (HESS) is critical for ensuring operational reliability, reducing emissions, and minimizing costs. However, existing approaches often suffer from limited adaptability under dynamic conditions, reduced predictive accuracy, and insufficient renewable utilization. To overcome these limitations, this paper suggests a hybrid framework that integrates the Wombat Optimization Algorithm (WbOA) with an Augmented Physics-Informed Neural Network (APINN). In this framework, WbOA performs optimal scheduling of power distribution and charge–discharge operations of the HESS, while APINN enhances forecasting accuracy by embedding physical constraints such as power balance and storage dynamics into the learning process. Simulation results demonstrate that the suggested WbOA–APINN method outperforms benchmark techniques including PSO, GA, and recent hybrid models. Specifically, it achieves a system efficiency of 98.7 %, delivers 4.38 kWh of useful energy to the load over a 24-h horizon, reduces CO₂ emissions to 0.15 kg/kWh, and lowers operational cost to $124.5 per day by accounting for grid purchase, non-renewable generation, O&M, and battery degradation costs. These improvements highlight the synergistic benefits of integrating WbOA with APINN, offering a robust, scalable, and economically viable solution for intelligent EM in renewable-integrated MGs.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"252 ","pages":"Article 112349"},"PeriodicalIF":4.2,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145271413","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

Passive modeling of transmission line impedance with real poles using non-negative least squares 用非负最小二乘法对具有实极的传输线阻抗进行无源建模

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-10 DOI: 10.1016/j.epsr.2025.112311

R. Mendoza-López , E.S. Bañuelos-Cabral , J.A. Gutiérrez-Robles , H.K. Høidalen , J.L. García-Sánchez

{"title":"Passive modeling of transmission line impedance with real poles using non-negative least squares","authors":"R. Mendoza-López , E.S. Bañuelos-Cabral , J.A. Gutiérrez-Robles , H.K. Høidalen , J.L. García-Sánchez","doi":"10.1016/j.epsr.2025.112311","DOIUrl":"10.1016/j.epsr.2025.112311","url":null,"abstract":"<div><div>Rational function-based approximations are widely used to model frequency-dependent effects on power system components. In transmission line (TL) modeling, for example, series impedance behavior can be synthesized using these models for time-domain simulations. Due to its characteristics, the rational approximation of this impedance can be carried out with only real poles. Two rational fitting techniques are considered and compared, ensuring real poles: Vector Fitting-Real Poles (VF-RP) and Taku Noda’s (TN) method. A fitting methodology based on residue calculation via Non-negative Least Squares (NNLS) is presented, which can be implemented in both fitters to obtain models that guarantee passivity. The advantages of the proposed methodology are demonstrated for (1) synthesizing the series impedance of a single-phase transmission line and (2) synthesizing the series impedance matrix of a three-phase double-circuit horizontal transmission line, where the concept of common poles is also implemented. The results show that the proposed methodology makes it possible to guarantee the passivity of the impedance model.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"252 ","pages":"Article 112311"},"PeriodicalIF":4.2,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145271409","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

Detailed EMTP wind turbine model for simulation transient phenomena during lightning strikes 用于模拟雷击瞬态现象的详细EMTP风力机模型

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-10 DOI: 10.1016/j.epsr.2025.112323

Dominik Miloš , Viktor Milardić , Amir Tokić

{"title":"Detailed EMTP wind turbine model for simulation transient phenomena during lightning strikes","authors":"Dominik Miloš , Viktor Milardić , Amir Tokić","doi":"10.1016/j.epsr.2025.112323","DOIUrl":"10.1016/j.epsr.2025.112323","url":null,"abstract":"<div><div>Lightning strikes on wind turbine blades cause significant damage to the wind turbine. This paper presents a detailed description of the EMTP wind turbine model for transient analysis of lightning strikes to wind turbine blades. The main objective of this paper is to develop the EMTP simulation model that can be used to perform simulations and transient analysis of lightning current strikes on wind turbine blades. Another objective of this paper is to identify the waveform of the lightning current that strikes the wind turbine blades by comparing the simulated current waveform with the current waveform obtained from a prototype measurement system at the base of the tower. A prototype measurement system for direct lightning current measurement was developed by a research group at Faculty of Electrical Engineering and Computing, University of Zagreb. Basic functionality of prototype measurement system is described in this paper. In future research it will be possible to determine voltage and current conditions on wind turbine components based on the developed EMTP wind turbine model.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"252 ","pages":"Article 112323"},"PeriodicalIF":4.2,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145271412","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

Fuzzy consensus controller for voltage and frequency regulation, power sharing, and SoC balancing in islanded AC microgrids 孤岛交流微电网电压频率调节、电力共享和SoC平衡的模糊共识控制器

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-10 DOI: 10.1016/j.epsr.2025.112333

Lucas Jonys R. Silva , Thales A. Fagundes , Márcio V.R. Campos , Deniver R. Schutz , Rodolpho V.A. Neves , Ricardo Q. Machado , Vilma A. Oliveira

{"title":"Fuzzy consensus controller for voltage and frequency regulation, power sharing, and SoC balancing in islanded AC microgrids","authors":"Lucas Jonys R. Silva , Thales A. Fagundes , Márcio V.R. Campos , Deniver R. Schutz , Rodolpho V.A. Neves , Ricardo Q. Machado , Vilma A. Oliveira","doi":"10.1016/j.epsr.2025.112333","DOIUrl":"10.1016/j.epsr.2025.112333","url":null,"abstract":"<div><div>Active and reactive power sharing accuracy and SoC balancing of battery energy storage systems in AC MGs are crucial objectives in MG control. To achieve this purposes, this work proposes a fuzzy-consensus controller based on a distributed communication channel. The fuzzy controller is applied individually in each DG to control the frequency, voltage and power by using only local variables. In a higher control layer, a consensus protocol is used to calculate the active and reactive power of the DGs in order to achieve accurate power sharing and SoC balancing simultaneously. Numerical results show the feasibility of the proposed strategy, which can maintain both voltage and frequency controlled and accurate power sharing under communication failures and false data inject attack on the communication channel. Comparison scenarios exhibited a lower frequency deviation and a SoC balancing up to 17.62% faster than state-of-art works in the literature.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"252 ","pages":"Article 112333"},"PeriodicalIF":4.2,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145271411","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

SFA-EMT hybrid simulation of power systems: Application to HVDC systems 电力系统SFA-EMT混合仿真：在高压直流系统中的应用

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-10 DOI: 10.1016/j.epsr.2025.112326

Javier O. Tarazona , Andrea T.J. Martí , José R. Martí

{"title":"SFA-EMT hybrid simulation of power systems: Application to HVDC systems","authors":"Javier O. Tarazona , Andrea T.J. Martí , José R. Martí","doi":"10.1016/j.epsr.2025.112326","DOIUrl":"10.1016/j.epsr.2025.112326","url":null,"abstract":"<div><div>This paper presents the application of a novel hybrid multirate protocol to interface a Shifted Frequency Analysis (SFA) solution with an Electromagnetic Transients (EMT) solution. Using the Multi Area Thévenin Equivalent (MATE) framework, the protocol enables the direct interfacing of SFA and EMT solutions without time step delays, iterations, or the use of transmission lines to decouple the solutions. The protocol adds a parallel EMT solution to track both the real and imaginary parts of the EMT solution. This allows for a direct interface to the complex-number SFA solution. The proposed hybrid approach allows for large time steps in the SFA solution and does not require the time steps of the SFA and EMT systems to be multiples of each other. The protocol has been previously validated in a transient stability study, and it is applied in this paper to power electronics devices in the EMT subsystem using a modified CIGRE HVDC benchmark system. The use of SFA and the multirate nature of the solution offers significant computational savings for large power systems compared to an EMT-only solution.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"252 ","pages":"Article 112326"},"PeriodicalIF":4.2,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145271414","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

Adaptive fault diagnosis in renewable integrated microgrids using hybrid machine learning approach 基于混合机器学习方法的可再生集成微电网自适应故障诊断

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-04 DOI: 10.1016/j.epsr.2025.112297

Dewashri Pansari , Anamika Yadav

{"title":"Adaptive fault diagnosis in renewable integrated microgrids using hybrid machine learning approach","authors":"Dewashri Pansari , Anamika Yadav","doi":"10.1016/j.epsr.2025.112297","DOIUrl":"10.1016/j.epsr.2025.112297","url":null,"abstract":"<div><div>Reliable fault detection, classification, and localization are crucial for maintaining the reliability and self-healing capabilities of smart grids, particularly in microgrids integrated with renewable energy sources. This paper presents an adaptive fault diagnosis framework using K-Nearest Neighbors (KNN) and Artificial Neural Networks (ANN), that models a practical microgrid architecture incorporating conventional and renewable energy sources, dynamic loads, and distributed transmission lines. The framework evaluates the performance of K-Nearest Neighbors (KNN) and Artificial Neural Networks (ANN) for fault detection, classification, and localization directly from the raw voltage and current measurements in per unit, thereby avoiding image-based transformations or complex feature extraction. By leveraging per-unit normalization of measurements, the proposed scheme achieves compatibility across diverse microgrid configurations. This standardized approach enhances scalability and flexibility, ensuring reliable performance under varying operating conditions and facilitating practical implementation in real-world systems. Simulation results demonstrate that the hybrid KNN–ANN framework achieves 99.9% accuracy in fault detection and classification, and 98.45% accuracy in fault localization demonstrating strong reliability for intelligent protection applications. To validate robustness and scalability, the system is modelled in per-unit representation and tested on two additional microgrid configurations. The findings confirm the adaptability and effectiveness of the proposed methodology, highlighting its potential as a reliable solution for intelligent protection in modern smart grid infrastructures.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"251 ","pages":"Article 112297"},"PeriodicalIF":4.2,"publicationDate":"2025-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221380","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

Measurements and simulations in the analysis of transformer failures during vacuum circuit breaker switching and surge protector applications 在真空断路器开关和浪涌保护器应用过程中变压器故障分析的测量和模拟

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-04 DOI: 10.1016/j.epsr.2025.112313

N.C. Jesus , B.D. Bonatto , R. Torquato , J.R. Cogo , L.M. Duarte , A.M. Laurentino , G.R. Santos

引用次数: 0