Electric Power Systems Research最新文献_第2页

Power system state estimation method based on denoising diffusion probability model data generation and multi-source data fusion 基于去噪扩散概率模型数据生成和多源数据融合的电力系统状态估计方法

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-04 DOI: 10.1016/j.epsr.2025.112302

Maosong Zhang , Xudong Zhu , Lingxiao Yang , Jie Yang

{"title":"Power system state estimation method based on denoising diffusion probability model data generation and multi-source data fusion","authors":"Maosong Zhang , Xudong Zhu , Lingxiao Yang , Jie Yang","doi":"10.1016/j.epsr.2025.112302","DOIUrl":"10.1016/j.epsr.2025.112302","url":null,"abstract":"<div><div>State estimation is fundamental for power system situational awareness but faces challenges of data scarcity, heterogeneous data fusion difficulties, and limited accuracy. This study proposes a novel state estimation method integrating Denoising Diffusion Probabilistic Models (DDPM) with multi-source data fusion. Firstly, we constructed a DDPM data generation model with embedded physical constraints, thereby effectively addressing the issue of data scarcity. Secondly, a weighted fusion strategy based on credibility was designed to integrate heterogeneous data sources. Finally, a least squares estimation algorithm based on dynamic decoupling and adaptive fusion was proposed, which improved the performance of state estimation. The IEEE 57-node system test shows that this method achieves a better balance between data quality generation and training cost. The state estimation error after integrating multi-source data is lower, and the convergence speed is 33% faster. In the presence of noise and data missing, the errors are reduced by 51% and 63% respectively.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"251 ","pages":"Article 112302"},"PeriodicalIF":4.2,"publicationDate":"2025-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221376","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 cost–benefit framework to evaluate capacity upgrade options in overhead line transmission planning 评估架空线路输电规划中容量升级方案的成本效益框架

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-04 DOI: 10.1016/j.epsr.2025.112150

Youba Nait Belaid, Miguel Heleno

引用次数: 0

Impact of ground-level cool condition during monsoon seasons: Occurrences of isolated breakdown pulse trains discharges and their relationship with ground flashes events in tropical thunderstorms 季风季节地面凉爽条件的影响：热带雷暴中孤立击穿脉冲序列放电的发生及其与地面闪光事件的关系

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-03 DOI: 10.1016/j.epsr.2025.112289

Nur Asyiqin Isa , Zikri Abadi Baharudin , Hidayat Zainuddin , Vernon Cooray , Muhammad Zahir Hassan , Shriram Sharma , Dalina Binti Johari , Noradlina Abdullah , Mahbubur Rahman

{"title":"Impact of ground-level cool condition during monsoon seasons: Occurrences of isolated breakdown pulse trains discharges and their relationship with ground flashes events in tropical thunderstorms","authors":"Nur Asyiqin Isa , Zikri Abadi Baharudin , Hidayat Zainuddin , Vernon Cooray , Muhammad Zahir Hassan , Shriram Sharma , Dalina Binti Johari , Noradlina Abdullah , Mahbubur Rahman","doi":"10.1016/j.epsr.2025.112289","DOIUrl":"10.1016/j.epsr.2025.112289","url":null,"abstract":"<div><div>These new findings provide detailed understanding into how seasonal monsoon patterns shape the characteristics and behaviour of isolated breakdown pulse (IBP) train discharges and their co-occurrence with ground flashes. Using high-resolution broadband electric radiation field measurements (12.5 to 25 nanoseconds) over a two-second duration, we identified key influences of monsoon variations. Notably, the ground-level cool condition and high humidity during the Northeast monsoon coincided with the IBP train activity. Among 90 samples analysed, most positive IBP train discharges occurred between late evening (6 PM) and midnight (12 AM), while negative IBP train discharges were rare, with only six cases recorded across all monsoon periods. We categorized IBP trains into two types: type-i, consisting of uniform polarity pulses with an average of 19 pulses, and type-ii, featuring a higher average of 95 pulses, followed by sequences of composite bipolar pulses. Interestingly, the occurrence of positive IBP train discharges during storms influenced the production of cloud-to-ground (CG) flashes. Storms with frequent positive IBP train discharges exhibited the highest number of positive CG flashes. Conversely, increased positive IBP train activity corresponded to a reduced percentage of negative CG flashes. These results enhance our understanding of storm electrification dynamics in tropical regions.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"251 ","pages":"Article 112289"},"PeriodicalIF":4.2,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221381","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 sizing of Hybrid Solar-Wind Battery System (HSWBS) using secretary bird optimization 基于秘书鸟优化的混合太阳能-风能电池系统尺寸优化

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-03 DOI: 10.1016/j.epsr.2025.112284

T. Senthilkumar , T. Jayasankar

{"title":"Optimal sizing of Hybrid Solar-Wind Battery System (HSWBS) using secretary bird optimization","authors":"T. Senthilkumar , T. Jayasankar","doi":"10.1016/j.epsr.2025.112284","DOIUrl":"10.1016/j.epsr.2025.112284","url":null,"abstract":"<div><div>Considering rising carbon emissions raise the average global temperature, there is serious concern about the state of the earth's climate. In this sense, renewable energy sources appear to be the best option. It can lower the rate of world energy consumption. This study aims to assess stand-alone hybrid solar-wind battery systems' (HSWBS) technical, economic, and environmental capabilities. The hybrid PV/wind/battery, PV/battery, and wind/battery power systems for the research area are optimized using a novel optimization technique called secretary bird optimization (SBO). The hybrid system is developed using the site location's load requirement, PV, and wind characteristics. MATLAB software was used for all of the simulations. For the HSWBS sizing application, however, the SBO algorithm fared better than the HHO and HO in terms of convergence time, lowest cost of energy (LCE), Loss of Power Supply Probability (LPSP), and overall cost. With a total cost value of Rs. 6.5204e + 08, the HSWBS is the most economical option when utilizing SBO. Additionally, the SBO approach is accurate and performs better than the HO and HHO algorithms, as shown by findings like LCE and LPSP.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"251 ","pages":"Article 112284"},"PeriodicalIF":4.2,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221378","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 Julia-based simulation platform for power system transients 基于julia的电力系统暂态仿真平台

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-03 DOI: 10.1016/j.epsr.2025.112307

A. Alsabbagh, M. Naïdjate, J. Mahseredjian, M.J. Matehkolaei

引用次数: 0

Deep learning-based situation detection, comprehension, and projection for power systems under false data injection attacks 虚假数据注入攻击下基于深度学习的电力系统态势检测、理解和预测

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-02 DOI: 10.1016/j.epsr.2025.112288

Tianlei Zang, Zian Wang, Chuangzhi Li, Yunfei Liu, Yujian Xiao, Shijun Wang, Chenjia Gu

{"title":"Deep learning-based situation detection, comprehension, and projection for power systems under false data injection attacks","authors":"Tianlei Zang, Zian Wang, Chuangzhi Li, Yunfei Liu, Yujian Xiao, Shijun Wang, Chenjia Gu","doi":"10.1016/j.epsr.2025.112288","DOIUrl":"10.1016/j.epsr.2025.112288","url":null,"abstract":"<div><div>With the continuous expansion and increasing intelligence of power systems, numerous state estimation methods based on deep learning have been proposed. However, most studies have primarily focused on estimating a limited set of state variables, lacking a deeper comprehension of system operating conditions. Additionally, models trained on specific datasets are unable to adapt their parameters and structures once deployed in real operations, rendering them ineffective in responding to unexpected events. This limitation becomes especially apparent when faced with False Data Injection Attacks (FDIAs), as the compromised measurements notably diminish the accuracy of model predictions. To address these, this paper presents a real-time detection, comprehension, projection model for power systems, leveraging the concept of situation awareness. The proposed model combines the Chebyshev network with the Long Short-Term Memory (LSTM) network. In the situation detection phase, malicious data within the measurements is identified and localized. An adaptive preprocessing layer is designed to reduce the weight of data from compromised nodes, mitigating the impact of FDIA. Subsequently, in the situation comprehension and situation projection phases, the current and future system state variables and risk situations are predicted, providing an in-depth comprehension and anticipation of system operational status. Experimental results demonstrate that the proposed model exhibits high robustness and accuracy when tested on IEEE 39 bus and IEEE 118-bus systems, thereby enhancing the resilience of deep learning models against FDIAs during real-time operations.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"251 ","pages":"Article 112288"},"PeriodicalIF":4.2,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221374","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

Feasibility demonstration of EGLA online condition assessment: Electrical-thermal characterization of the semiconductive connection unit EGLA在线状态评估的可行性论证：半导体连接单元的电-热特性

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-01 DOI: 10.1016/j.epsr.2025.112299

Zhexu Luo, Gang Liu

{"title":"Feasibility demonstration of EGLA online condition assessment: Electrical-thermal characterization of the semiconductive connection unit","authors":"Zhexu Luo, Gang Liu","doi":"10.1016/j.epsr.2025.112299","DOIUrl":"10.1016/j.epsr.2025.112299","url":null,"abstract":"<div><div>Externally gapped line arresters(EGLA) are lightning protection equipment with wide applications and excellent performance, but the structure of its external gap restricts the development of its online condition assessment. In view of this problem, this paper proposes an EGLA online condition assessment scheme that generates leakage current by short-circuiting the external gap with a semiconductive connection unit and focusing on the design of the connection unit. Firstly, this paper analyzes the requirements for the characteristics of the connection unit. Subsequently, the semiconductive composites with nonlinear resistive properties are selected as the connection unit and their composition and geometry are designed. Next, experiments simulating the scenario of complete EGLA failure are designed to verify the performance of the connection unit. According to the experiment results, the designed connection unit shows good current limiting performance at lower test voltages (≤5.3 kV). However, at higher test voltages (≥8.7 kV), high-temperature failure of the connection unit occurs after a certain period of access, this paper attributes the cause to the partial overheating caused by the aggregation of current lines. Therefore, this paper also analyzes the safety checking time when using the connection unit, providing theoretical support for the development of EGLA online condition assessment.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"251 ","pages":"Article 112299"},"PeriodicalIF":4.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221373","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 Charging Control Strategy of Dynamic Wireless Charging System for Multiple Electric Vehicles with Short-segment Transmitter Coil 短段发射线圈多辆电动汽车动态无线充电系统的充电控制策略

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-01 DOI: 10.1016/j.epsr.2025.112285

Ming Zhang, Weiye Tao, Hantao Zhang, Guohang Tang, Menghui Yang

{"title":"The Charging Control Strategy of Dynamic Wireless Charging System for Multiple Electric Vehicles with Short-segment Transmitter Coil","authors":"Ming Zhang, Weiye Tao, Hantao Zhang, Guohang Tang, Menghui Yang","doi":"10.1016/j.epsr.2025.112285","DOIUrl":"10.1016/j.epsr.2025.112285","url":null,"abstract":"<div><div>For the dynamic wireless charging (DWC) system of electric vehicle (EV) with short transmitter coil structure, the connection and driving modes of transmitting coil are various, which increases the complexity of system design. In addition, the uncertainty of the number of EV also puts higher requirements on charging control strategies. This paper proposes an integrated circuit design method based on ground-side switching control and resonance compensation. Furthermore, the design and control method of the ground-side circuit of the DWC system for multiple EVs with parallel transmitter coils are developed, which can greatly reduce the cost and volume of the system hardware. Then, the power control and efficiency optimization strategies based on the vehicle-side controllable rectifier circuit are proposed by analyzing the output characteristics of the DWC system for multiple EVs with parallel transmitter coils. Finally, the effectiveness of the proposed method is verified by simulation. The experimental results of 330W show that when adopting the ground-side integrated circuit control strategy and power control method proposed in this paper, the output power fluctuation of the system is only 1.23% when multiple loads are connected. The proposed efficiency optimization strategy can increase the output efficiency of three electric vehicles during charging from 86.97% to 88.81%.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"251 ","pages":"Article 112285"},"PeriodicalIF":4.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221369","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

Dynamic decomposition and multilevel feature fusion for dissolved gas in oil anomaly detection 石油异常检测中溶解气的动态分解与多级特征融合

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-01 DOI: 10.1016/j.epsr.2025.112303

Leixiao Lei , Yigang He , Zhikai Xing

引用次数: 0

Collaborative genetic algorithm for wide-area backup distance protection under uncertain conditions 不确定条件下广域后备距离保护的协同遗传算法

IF 4.2 3区工程技术

Electric Power Systems Research Pub Date : 2025-10-01 DOI: 10.1016/j.epsr.2025.112267

Ali Almohammedi , S.M. Suhail Hussain

{"title":"Collaborative genetic algorithm for wide-area backup distance protection under uncertain conditions","authors":"Ali Almohammedi , S.M. Suhail Hussain","doi":"10.1016/j.epsr.2025.112267","DOIUrl":"10.1016/j.epsr.2025.112267","url":null,"abstract":"<div><div>Power system backup protection encounters growing challenges due to network protection uncertainties which can lead to missed or delayed fault clearance. A novel collaborative genetic algorithm (CGA) approach over wide-area backup distance protection is developed to coordinate multiple distance relays. In the proposed scheme, a zone-1 relay’s fault detection immediately triggers its paired relay to also detect the fault. For zone-2 and zone-3 detections, the scheme activates their zone’s paired relays as well as all paired relays from earlier zones. During training, the CGA optimizes relay weighting factors using collaborative and ideal performance metrics, guiding the objective function towards the true fault location. As a direct influence on this study, hybrid transmission lines, microgrid resilience, and renewable integrated power systems are very relevant applications. The practical implication of the present model is to enhance protection detection. Simulation results demonstrate that the CGA-based scheme outperforms the conventional and standard GA approaches, achieving fault identification success rates of 99.69%, 99.19%, and 95.83% in best-, base-, and worst-case scenarios, respectively. Unlike the existing methods, the proposed CGA maintained excellent performance beyond 99% in all scenarios without uncertainty. This significantly improves worst-case performance and overall protection reliability.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"251 ","pages":"Article 112267"},"PeriodicalIF":4.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221368","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