Electric Power Systems Research最新文献_第10页

Breakdown accident analysis occurred in 750kV AC circuit breaker for filter banks in ±800kV UHVDC transmission system ±800kV特高压直流输电系统750kV滤波组交流断路器击穿事故分析

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-04-09 DOI: 10.1016/j.epsr.2025.111670

Weirong Qian , Zhaojun Jiang , Ao Li , Xu Cai , Junbo Deng , Bo Niu , Feiyue Ma , Hui Ni

{"title":"Breakdown accident analysis occurred in 750kV AC circuit breaker for filter banks in ±800kV UHVDC transmission system","authors":"Weirong Qian , Zhaojun Jiang , Ao Li , Xu Cai , Junbo Deng , Bo Niu , Feiyue Ma , Hui Ni","doi":"10.1016/j.epsr.2025.111670","DOIUrl":"10.1016/j.epsr.2025.111670","url":null,"abstract":"<div><div>The circuit breaker is of vital importance to the operation of the ultra-high voltage direct current (UHVDC) power transmission systems. This paper analyzes a breakdown accident which occurred in 750 kV AC circuit breaker for filter banks during the power decline process of the Lingshao ±800 kV UHVDC transmission system. Combined with on-site internal inspection, fault recording analysis and electric field simulation, it reveals that the electric filed distorted by a falling fastening nut was the primary cause to the first insulation breakdown on the grid side of the circuit breaker. Subsequently, the deteriorated insulation performance resulted in the second breakdown on the load side of the circuit breaker. The two breakdown paths in the circuit breaker are identified and verified by electric field simulation and PSCAD transient simulation together. This paper can provide references for the subsequent accident analysis of circuit breakers with controlled switching device in UHVDC power transmission systems.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"246 ","pages":"Article 111670"},"PeriodicalIF":3.3,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799027","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

Fast calculation of spatial potentials and robust inversion of field sources for overhead transmission lines in complex terrain 复杂地形下架空输电线路空间电位快速计算及场源鲁棒反演

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-04-09 DOI: 10.1016/j.epsr.2025.111686

Yuqing Ji , Jiaxin Yuan , Igor S. Stievano , Riccardo Trinchero , Hang Zhou

{"title":"Fast calculation of spatial potentials and robust inversion of field sources for overhead transmission lines in complex terrain","authors":"Yuqing Ji , Jiaxin Yuan , Igor S. Stievano , Riccardo Trinchero , Hang Zhou","doi":"10.1016/j.epsr.2025.111686","DOIUrl":"10.1016/j.epsr.2025.111686","url":null,"abstract":"<div><div>To achieve real-time monitoring of spatial potential and field source voltage of overhead lines in complex terrain, this paper proposes a numerical model for fast forward calculation of spatial potential and robust inversion calculation of field source voltage. The main problem addressed is the computational complexity and accuracy issues associated with traditional numerical methods and simplified engineering methods, which often fail to provide real-time and reliable results in complex terrain environments. This study aims to develop a more efficient and accurate numerical model for real-time monitoring. Specifically, a simplified cross-section model based on the constant boundary element method (BEM) and an unstructured discretization method is established. This model allows for faster forward calculations of spatial potential. Additionally, a robust inversion method based on the optimization of the measurement array structure is presented. This method ensures the accuracy and reliability of the inversion of field source voltage. The effectiveness of the proposed method is demonstrated through both 2-D analytical cases and 3-D cases. The forward calculation time is significantly reduced to less than one voltage cycle (50 Hz), which is crucial for real-time monitoring. Furthermore, the inversion uncertainty is <3E-3 pu., and the inversion error is <1.5 %.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"246 ","pages":"Article 111686"},"PeriodicalIF":3.3,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799033","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

Advanced detection of multiple PD sources in cables using time-frequency transformations 使用时频变换的电缆中多个PD源的高级检测

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-04-09 DOI: 10.1016/j.epsr.2025.111699

Omid Sabarshad, Asghar Akbari

{"title":"Advanced detection of multiple PD sources in cables using time-frequency transformations","authors":"Omid Sabarshad, Asghar Akbari","doi":"10.1016/j.epsr.2025.111699","DOIUrl":"10.1016/j.epsr.2025.111699","url":null,"abstract":"<div><div>This paper presents a novel approach for detecting, identifying, and localizing partial discharge (PD) sources within power cable insulation using advanced time-frequency analysis and discrete wavelet transform (DWT). The proposed method effectively distinguishes multiple PD sources with high precision by integrating discharge energy and time-frequency index (TFI) analysis. Experimental validation across seven scenarios involving different cavity combinations within the cable insulator demonstrates the method's robustness, even in environmental noise. The synergy between discharge energy metrics and TFI enhances diagnostic accuracy by capturing sharp discontinuities in the time-frequency domain. The results confirm the capability of the proposed approach to identify PD sources at various locations, including the cable ends, joints, and along the insulation. PD faults manifest as deformations in the TFI and energy plots within the time-frequency domain. The fault location can be identified based on the cable length and deformation time. This comprehensive framework improves PD source separation and localization and reduces computational costs, making it particularly beneficial for machine learning-based data clustering.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"246 ","pages":"Article 111699"},"PeriodicalIF":3.3,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799031","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 maximum power point tracking method for photovoltaic systems using step-size reduction and adapted Salp Swarm Optimization for dynamic conditions 基于步长缩减和Salp群优化的光伏系统自适应最大功率跟踪方法

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-04-09 DOI: 10.1016/j.epsr.2025.111655

Avinash Bhetalam, Kanasottu Anil Naik

{"title":"Adaptive maximum power point tracking method for photovoltaic systems using step-size reduction and adapted Salp Swarm Optimization for dynamic conditions","authors":"Avinash Bhetalam, Kanasottu Anil Naik","doi":"10.1016/j.epsr.2025.111655","DOIUrl":"10.1016/j.epsr.2025.111655","url":null,"abstract":"<div><div>This study introduces an advanced Maximum Power Point Tracking (MPPT) framework to improve the efficiency and stability of photovoltaic (PV) systems under fluctuating irradiance and load conditions. The proposed approach integrates a Step-Size Adaptation Algorithm (SSAA) to reduce power oscillations, a deviation avoidance loop for real-time irradiance detection, and a dual-parameter perturbation algorithm (IPA/VPA) to enhance tracking speed and precision. Additionally, an Adapted Salp Swarm Optimization (ASSO) with a dynamic factor is employed to optimize boost converter performance, ensuring faster convergence and higher stability. Quantitative improvements are demonstrated through comparative analysis, highlighting superior tracking accuracy, reduced steady-state errors, and faster convergence than conventional methods such as Perturb & Observe (P&O) and Incremental Conductance (IncCond). Qualitative evaluations confirm the robustness of the framework against rapid environmental fluctuations, ensuring smooth power transitions and minimal oscillations. Simulation results validate that the combined implementation of ASSO, dual perturbation strategies, and deviation avoidance leads to a highly adaptable and efficient MPPT solution. The proposed framework outperforms existing techniques in terms of accuracy, stability, and energy extraction, making it a reliable solution for real-world PV applications.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"246 ","pages":"Article 111655"},"PeriodicalIF":3.3,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799030","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 single-phase auto-reclosing method for bundled renewable energy transmission lines based on temporal structural mutation of coupled voltage 基于耦合电压时序结构突变的成束可再生能源输电线路单相自适应重合闸方法

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-04-09 DOI: 10.1016/j.epsr.2025.111693

Zhenxing Li, Yi Zhu, Cong Hu, Zhe An, Zhenhua Li

{"title":"Adaptive single-phase auto-reclosing method for bundled renewable energy transmission lines based on temporal structural mutation of coupled voltage","authors":"Zhenxing Li, Yi Zhu, Cong Hu, Zhe An, Zhenhua Li","doi":"10.1016/j.epsr.2025.111693","DOIUrl":"10.1016/j.epsr.2025.111693","url":null,"abstract":"<div><div>The integration of renewable energy (RE) into power system complicates fault nature identification and adaptive single-phase auto-reclosing (ASPAR). This paper analyzes the harmonic output mechanism of RE in high-penetration scenarios in China, and confirms the occurrence of odd-order harmonics during ASPAR. A novel adaptive single-phase auto-reclosing method based on the temporal structural mutation of coupled voltage is proposed. By analyzing the voltage coupling loop, it is found that the temporal structural mutation feature remains unaffected by the harmonics of RE or the configurations of line shunt reactors, which is quantified by the integral root mean square (RMS) value of the fault-phase coupled voltage. Two consecutive sliding windows are used for integral RMS calculation and the adaptive threshold is set to enhance reliability. After arc extinction of transient faults, the integral RMS value exceeds the threshold, while in permanent faults, the value remains below the threshold. The proposed method is validated through PSCAD/EMTDC simulations. It adapts to various fault scenarios, RE penetration levels, and shunt reactor configurations, while demonstrating robustness to noise. By mitigating risks introduced by RE, it enhances the success rate of ASPAR.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"246 ","pages":"Article 111693"},"PeriodicalIF":3.3,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799029","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 metaheuristic optimization based DSM approach towards effective energy recommender system 基于混合元启发式优化的DSM有效能量推荐系统

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-04-09 DOI: 10.1016/j.epsr.2025.111645

Aamir Maqbool , Attique Ur Rehman , Ammar Arshad , Karar Mahmoud , Matti Lehtonen

{"title":"Hybrid metaheuristic optimization based DSM approach towards effective energy recommender system","authors":"Aamir Maqbool , Attique Ur Rehman , Ammar Arshad , Karar Mahmoud , Matti Lehtonen","doi":"10.1016/j.epsr.2025.111645","DOIUrl":"10.1016/j.epsr.2025.111645","url":null,"abstract":"<div><div>The demand for electricity is rapidly increasing, along with its cost. To address consumer needs and alter electricity usage behavior, Demand Side Management (DSM) techniques, focusing on cost savings, are widely used globally. Various metaheuristic-based optimization algorithms, such as Genetic Algorithm (GA), Grey Wolf Optimization (GWO), Sperm Swarm Optimization (SSO), and Particle Swarm Optimization (PSO), have been applied in load-shifting strategies within DSM. This paper proposes a hybrid model, GAPSO, combining GA's global search with PSO's local search to optimize load shifting and curtailing, specifically for peak load reduction. The results show that GAPSO outperforms both GA and PSO, achieving a globally optimal solution and avoiding local minima. For peak load reduction, GAPSO achieves up to 2.26 % better results for aggregated Grid load and 0.8 % for AC load compared to the closest competitor. In terms of cost savings, GAPSO saves up to 155.60 cents for the Grid, while PSO leads in cost savings for AC load, outperforming both GA and GAPSO by 79.75 cents. Additionally, a GUI-based recommender system for air conditioning load is developed as a case study. The PSO-driven system helps reduce energy costs by providing recommendations on operating temperatures and time slots for AC load. The system operates in two modes: load curtailment when the AC is on and load shifting for a full 24 h period, presenting users with potential cost savings based on their choices.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"246 ","pages":"Article 111645"},"PeriodicalIF":3.3,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799359","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

Research on UHV AC/DC power grid's harmonic coupling characteristic under the action of geomagnetically induced currents 地磁感应电流作用下特高压交直流电网谐波耦合特性研究

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-04-09 DOI: 10.1016/j.epsr.2025.111652

Xinmeng Shao , Peihong Yang , Chunming Liu , Peng Li , Ruixian Wang

{"title":"Research on UHV AC/DC power grid's harmonic coupling characteristic under the action of geomagnetically induced currents","authors":"Xinmeng Shao , Peihong Yang , Chunming Liu , Peng Li , Ruixian Wang","doi":"10.1016/j.epsr.2025.111652","DOIUrl":"10.1016/j.epsr.2025.111652","url":null,"abstract":"<div><div>Geomagnetic-induced currents (GIC) caused by geomagnetic storms (GS) can lead to transformer core saturation and harmonic generation, which further couples with harmonics from ultra-high voltage (UHV) AC/DC transmission systems, complicating grid stability. Focusing on China's UHV DC hierarchical connection mode (HCM), this study establishes a harmonic coupling model integrating GIC effects and converter-transformer interactions. A harmonic state-space (HSS) framework combined with Euler's formula simplification enables efficient analysis of harmonic propagation in multi-voltage-level grids. Simulations using PSCAD/EMTDC reveal that the harmonic content generated by the coupling of the transformer and converter is higher than that generated by the transformer alone. The superimposed coupling of cluster harmonics exceeds national standards, with 2nd harmonic currents surpassing 1 % at the AC side and 3rd harmonic voltages reaching 4.86 % in 500 kV DC links. This work provides theoretical and practical foundations for enhancing UHV grid resilience against geomagnetic disturbances.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"246 ","pages":"Article 111652"},"PeriodicalIF":3.3,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance analysis of credible contingency selection schemes for security enhancement in power system network 增强电网安全的可信应急选择方案的性能分析

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-04-09 DOI: 10.1016/j.epsr.2025.111653

M. Manojkumar , V. Sundaravazhuthi , B. Ponmudi , T Dharma Raj , S. Swaminathan

{"title":"Performance analysis of credible contingency selection schemes for security enhancement in power system network","authors":"M. Manojkumar , V. Sundaravazhuthi , B. Ponmudi , T Dharma Raj , S. Swaminathan","doi":"10.1016/j.epsr.2025.111653","DOIUrl":"10.1016/j.epsr.2025.111653","url":null,"abstract":"<div><div>Maintaining safe levels of power, voltage, and frequency is an essential component of power system security, which is active in both normal and emergency situations. At the time of unbearable voltage violations on the buses, massive generator and transformer outages, and deviation of vital power system parameters from intended ranges, severe security violations occur. In this work, an optimization algorithm is used to find the transmission lines that cause severe security threats due to acute and critical contingencies. Evolutionary algorithms such as biogeography-based optimization (BBO), harmony search optimization (HSO), and artificial bee colony (ABC) for transmission lines-based methods are suggested for selecting credible contingencies for transmission lines. Credibility is assessed by the power flow violation index (PFVI) and bus voltage violation index (BVVI) through index format. The selected contingent transmission lines through evolutionary algorithms will be a priority for security enhancement. Simulations were conducted on IEEE 14-bus, 30-bus, and 57-bus networks. This optimization has enhanced the stability and security of the power system by reducing overloaded transmission lines and restrictive bus voltage violations.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"246 ","pages":"Article 111653"},"PeriodicalIF":3.3,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799028","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 correction method for wind power forecast considering the dynamic process of wind turbine icing 考虑风电机组结冰动态过程的风电功率预报校正方法

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-04-04 DOI: 10.1016/j.epsr.2025.111669

Ming Yang , Haoyang Zhou , Menglin Li , Bo Wang , Fei Wang

{"title":"A correction method for wind power forecast considering the dynamic process of wind turbine icing","authors":"Ming Yang , Haoyang Zhou , Menglin Li , Bo Wang , Fei Wang","doi":"10.1016/j.epsr.2025.111669","DOIUrl":"10.1016/j.epsr.2025.111669","url":null,"abstract":"<div><div>In order to improve the accuracy of wind power forecast (WPF) in wind turbine icing scenarios, this paper proposes a methodology for the correction of WPF that takes into account the impact of dynamic ice accumulation processes. Firstly, the icing calculation formula applicable to wind turbine blades is derived based on the Makkonen model. Concurrently, multiple sets of simulations are performed by FENSAP-ICE software to obtain the key parameters of icing calculation formula under discrete weather conditions. Then, the Kriging interpolation algorithm is introduced to construct continuous mapping functions from weather conditions to icing parameters, allowing real-time icing degree can be calculated using the icing formula derived from numerical weather prediction (NWP) data, thereby describing the dynamic icing process. Finally, an additional correction model based on few-shot learning is proposed, which can maintain good forecast performance with sparse ice cover samples. By forecasting wind power loss under varying icing conditions, the model corrects the WPF results, and the case studies demonstrate that after applying the proposed methodology, the accuracy of WPF under icing conditions is significantly improved.</div></div>","PeriodicalId":50547,"journal":{"name":"Electric Power Systems Research","volume":"246 ","pages":"Article 111669"},"PeriodicalIF":3.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768089","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

Enhancing performance of state estimation algorithms with FACTS 利用事实增强状态估计算法的性能

IF 3.3 3区工程技术

Electric Power Systems Research Pub Date : 2025-04-04 DOI: 10.1016/j.epsr.2025.111641

Vitor H.P. de Melo , Gustavo M. Hebling , Julio A.D. Massignan , João B.A. London Jr

引用次数: 0