International Journal of Electrical Power & Energy Systems最新文献_第3页

Data-physics joint-driven N-k static security assessment with higher-order graph convolution model 基于高阶图卷积模型的数据物理联合驱动N-k静态安全评估

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2025-09-25 DOI: 10.1016/j.ijepes.2025.111128

Yongzhe Li , Lin Guan , Jiyu Huang , Zun Ma , Liukai Chen , Haoying Chen , Zihan Cai

{"title":"Data-physics joint-driven N-k static security assessment with higher-order graph convolution model","authors":"Yongzhe Li , Lin Guan , Jiyu Huang , Zun Ma , Liukai Chen , Haoying Chen , Zihan Cai","doi":"10.1016/j.ijepes.2025.111128","DOIUrl":"10.1016/j.ijepes.2025.111128","url":null,"abstract":"<div><div>In power systems with a high penetration of renewable energy, data-driven <em>N-k</em> static security assessment (<em>N-k</em> SSA) plays a critical role in contingency risk analysis. To improve prediction robustness and enhance the model’s capability to capture long-chain power flow transfers after disturbances, this paper proposes a data-physics joint-driven <em>N-k</em> SSA scheme (<em>N-k</em> DPSSA). Specifically, a multi-hop graph convolution network (MPGCN) is introduced to expand the model’s receptive field, enabling better identification of long-chain power redistribution patterns. A branch feature extractor (BFE) and a branch power predictor (BPP) are designed to extract branch-level features and estimate branch power flows directly. Furthermore, a physics-informed Kirchhoff discriminator (KD) module is developed to verify prediction validity under relaxed Kirchhoff’s current law constraints and identify uncertain samples, thus improving overall robustness. The proposed DPSSA framework is validated on the IEEE 39-bus system, the IEEE 300-bus system, and a real provincial-level power system in China. Experimental results show that compared with traditional methods, the proposed approach achieves more than 2% improvement in accuracy on the test set and over 10% improvement in previously unseen topologies. Visualization of prediction outcomes further demonstrates the model’s superiority in handling long-chain power flow transfers and its resilience to structural variations, validating its potential for practical deployment in large-scale system security assessment.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"172 ","pages":"Article 111128"},"PeriodicalIF":5.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Post-contingency coordinated corrective control of electricity–gas interconnected systems based on adaptive orthogonal collocation 基于自适应正交配置的电-气互联系统事后协调纠偏控制

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2025-09-25 DOI: 10.1016/j.ijepes.2025.111127

Hui Du , Xiaoning Zhang , Tao Lin , Jun Li , Chen Li , Zhengyang Lin

{"title":"Post-contingency coordinated corrective control of electricity–gas interconnected systems based on adaptive orthogonal collocation","authors":"Hui Du , Xiaoning Zhang , Tao Lin , Jun Li , Chen Li , Zhengyang Lin","doi":"10.1016/j.ijepes.2025.111127","DOIUrl":"10.1016/j.ijepes.2025.111127","url":null,"abstract":"<div><div>In multi-area electricity–gas interconnected systems, a disturbance in one system may trigger cascading failures between the coupling systems without efficient online coordination to alleviate overloads in power lines or over-limit pressure in pipelines. This paper focuses on post-contingency coordinated corrective control, formulated as a decentralized security-constrained optimal energy flow (D-SCOEF) problem to minimize the total control cost. The heterogeneous energy flow is modeled by integrating steady-state power flow with partial-differential-equation (PDE)-based transient gas flow. To enhance computational efficiency, a space–time orthogonal collocation (OC) method is employed to approximate the PDE-based transient gas flow. Recognizing the critical influence of the number of OC points on numerical accuracy, an adaptive OC (AOC) method is proposed. Furthermore, a decentralized solving framework leveraging the auxiliary problem principle (APP) is introduced. By incorporating the iterative process of the AOC method into the APP-based D-SCOEF coordination, this framework not only ensures computational efficiency but also safeguards the data privacy of independent system operators. Case studies on a single pipeline segment validate the proposed AOC method’s computational efficiency and accuracy compared to existing approaches. Benchmark systems, including the IEEE 118-bus electricity network and 20-node gas systems, further demonstrate the solving framework’s performance and the effectiveness of the derived control strategies.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"172 ","pages":"Article 111127"},"PeriodicalIF":5.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 hybrid planning framework for virtual capacity-enhanced distribution transformer considering time-division multiplexing of energy storage unit 考虑储能单元分时复用的虚拟增容配电变压器混合规划框架

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2025-09-25 DOI: 10.1016/j.ijepes.2025.111187

Qingqi Sun , Luona Xu , Yuan Chi , Yongjie Luo , Yiyao Zhou , Yao Zou , Qianggang Wang , Niancheng Zhou

{"title":"A hybrid planning framework for virtual capacity-enhanced distribution transformer considering time-division multiplexing of energy storage unit","authors":"Qingqi Sun , Luona Xu , Yuan Chi , Yongjie Luo , Yiyao Zhou , Yao Zou , Qianggang Wang , Niancheng Zhou","doi":"10.1016/j.ijepes.2025.111187","DOIUrl":"10.1016/j.ijepes.2025.111187","url":null,"abstract":"<div><div>Conventional (distribution transformers) DT capacity enhancement through replacement with larger units often incurs high investment costs and suboptimal asset utilization. To address these issues, this paper proposes a virtual capacity-enhanced scheme for DTs based on battery (energy storage unit) ESUs. A TDM strategy is introduced to improve ESU operation efficiency, and an optimal configuration model for ESU capacity is proposed to balance economic benefits and operational performance. A hybrid capacity-enhanced decision-making framework is further developed to guide DT capacity enhancement decisions by systematically evaluating virtual, conventional, and combined strategies. Case studies show that the virtual capacity-enhanced DT performs better under low overload conditions. Compared with traditional and purely virtual schemes, the hybrid scheme reduces five-year cumulative costs by 14.18 % and 11.61 %, respectively. In addition, the proposed TDM strategy increases the annual cumulative discharge duration of the ESU by 1233 h, and reduces the average daily peak-to-valley load difference by 6.08 %. In a real-world 10 kV feeder, the hybrid scheme reduces cumulative costs by 21.13 % compared with traditional scheme.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"172 ","pages":"Article 111187"},"PeriodicalIF":5.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Distributed detection and mitigation of FDIAs in smart grids via federated learning 基于联邦学习的智能电网中fdi的分布式检测与缓解

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2025-09-25 DOI: 10.1016/j.ijepes.2025.111126

Cihat Keçeci , Rachad Atat , Muhammad Ismail , Katherine R. Davis , Erchin Serpedin

引用次数: 0

Autonomous grid-forming inverter exponential droop control for improved frequency stability 自主成网逆变器指数下垂控制提高频率稳定性

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2025-09-25 DOI: 10.1016/j.ijepes.2025.111160

R.W. Kenyon , A. Sajadi , B.M. Hodge

{"title":"Autonomous grid-forming inverter exponential droop control for improved frequency stability","authors":"R.W. Kenyon , A. Sajadi , B.M. Hodge","doi":"10.1016/j.ijepes.2025.111160","DOIUrl":"10.1016/j.ijepes.2025.111160","url":null,"abstract":"<div><div>This paper introduces a novel control strategy for grid-forming inverter-based resources, <em>Droop-e</em>, which establishes a non-linear, active power–frequency droop relationship based on an exponential function of the power output. A primary advantage of <em>Droop-e</em> as compared to traditional linear droop is an increased utilization of available power headroom that directly mitigates system frequency excursions and reduces the rate of change of frequency. First, the motivation for <em>Droop-e</em> as compared to a linear grid-forming control is established, and then the full control system is described, including the mirrored inversion at the origin, the linearization at a parameterized limit, and the auxiliary autonomous power sharing controller. Subsequently, the analytic stability of the controller is assessed, including a continuity and smoothness proof, adherence to synchronization criteria, and a small-signal stability analysis. This is followed by electromagnetic transient simulations of this controller with full order inverter models and accompanying DC-side dynamics, connected in parallel with synchronous generators for an exhaustive range of dispatches on a simple 3-bus system. Finally, IEEE 39-bus system simulations highlight the improved frequency stability of the system with multiple, <em>Droop-e</em> controlled grid-forming inverters.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"172 ","pages":"Article 111160"},"PeriodicalIF":5.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Distance protection of IBR transmission lines considering active voltage support under asymmetrical faults 非对称故障下考虑有源电压支撑的IBR输电线路距离保护

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2025-09-25 DOI: 10.1016/j.ijepes.2025.111151

Hongyue Ma , Yan Li , Tao Zhang , Tao Zheng , Zhiguo Hao

{"title":"Distance protection of IBR transmission lines considering active voltage support under asymmetrical faults","authors":"Hongyue Ma , Yan Li , Tao Zhang , Tao Zheng , Zhiguo Hao","doi":"10.1016/j.ijepes.2025.111151","DOIUrl":"10.1016/j.ijepes.2025.111151","url":null,"abstract":"<div><div>In the inverter-based resource (IBR) transmission system, the fault ride-through (FRT) control of the IBR significantly modifies its fault characteristics. The existence of transition resistance during faults may result in distance protection mis-operation on the IBR side. Capitalizing on the controllability of IBRs, this paper proposes a control-assistant distance protection method under asymmetrical faults, which achieves dual objectives: active voltage support and transition resistance tolerance. First, an integrated FRT control strategy for IBR that balances point-of-connection (POC) voltage support, fault characterization remodeling, and equipment current limitation is developed. Then, a control-assistant distance protection with strong tolerance to transition resistance is proposed. The protection utilizes the single-terminal sequence components of the transmission line to determine the additional impedance angle of the measured impedance. Further, a unified expression for accurately calculating fault distance is established based on the geometric relation. Finally, the effectiveness of the proposed control-assistant protection is verified in the simulation.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"172 ","pages":"Article 111151"},"PeriodicalIF":5.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Optimization control strategy of wide ZVS range and automatic Euler angle for bi-directional wireless power transfer system by TPS 基于TPS的双向无线输电系统宽ZVS范围和自动欧拉角优化控制策略

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2025-09-25 DOI: 10.1016/j.ijepes.2025.111133

Jianbin Chen, Chenyu Yang, Jianjun Zou

{"title":"Optimization control strategy of wide ZVS range and automatic Euler angle for bi-directional wireless power transfer system by TPS","authors":"Jianbin Chen, Chenyu Yang, Jianjun Zou","doi":"10.1016/j.ijepes.2025.111133","DOIUrl":"10.1016/j.ijepes.2025.111133","url":null,"abstract":"<div><div>In this study, a control strategy for broad ZVS operating range and BDWPT system efficiency optimization was created. The matching requirements for using TPS (three phase shift) in a BDWPT system with a double-sided LCC compensated network are investigated. To manage power flow and match loads, an optimum TPS control mechanism is recommended. The frequency and time domain models of the double-sided LCC compensated network are suggested to further explain the behavior of the BDWPT system. By analyzing the resonant currents, a technique for operating the automated Euler angle function under TPS and redistribution of the fundamental phase shift angle is proposed. These evaluations reveal that the system can operate within a broad ZVS operating range under the majority of load scenarios with the suggested TPS control strategy. A 3.3kW BDWPT system prototype is created to verify the theoretical analyses. The observed waveforms and the suggested model correspond rather well. The system’s measured peak efficiency is 90.35%. All power switches achieve ZVS with wide coupling coefficients for various output scenarios over the whole power and transmission range.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"172 ","pages":"Article 111133"},"PeriodicalIF":5.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Unified Loadability Quality Factor (ULQF): A bounded and interpretable voltage stability index 统一负载质量因子（ULQF）：一个有界的、可解释的电压稳定性指标

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2025-09-24 DOI: 10.1016/j.ijepes.2025.111175

Manuel Jaramillo , Diego Carrión , Filippos Perdikos

{"title":"Unified Loadability Quality Factor (ULQF): A bounded and interpretable voltage stability index","authors":"Manuel Jaramillo , Diego Carrión , Filippos Perdikos","doi":"10.1016/j.ijepes.2025.111175","DOIUrl":"10.1016/j.ijepes.2025.111175","url":null,"abstract":"<div><div>Voltage stability assessment remains a critical challenge in evolving power networks, which are increasingly influenced by load variability, renewable energy integration, and distributed energy resources. Traditional indices such as the Loadability Quality Power (LQP) index exhibit significant limitations under stressed or complex conditions, frequently producing unbounded or misleading values. To address these shortcomings, this paper introduces the Unified Loadability Quality Factor (ULQF). This normalized and bounded voltage stability index quantifies line stress on a [0, 1] scale, offering improved interpretability and consistency for steady-state security assessment. ULQF incorporates a dynamic normalization framework that accounts for real and reactive capacity margins, ensuring applicability across both radial and meshed topologies. Its performance is validated on four benchmark systems, Garver 6-bus, IEEE 14, 30, and 118-bus, across more than 160,000 load scenarios, including nodal overloading, contingency stress testing, Monte Carlo uncertainty analysis, and comparisons against classical indices such as FVSI and L- index. Results show that ULQF reliably tracks proximity to voltage collapse and aligns with PV curve behavior, outperforming existing methods under conditions of congestion and increased demand. Its lightweight computational design and compatibility with SCADA measurements highlight its potential for practical integration into control-center workflows. While this study focuses on classical benchmark networks, future work will extend the framework to converter- dominated and renewable-rich systems, further supporting resilience and reliability in evolving power grids.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"172 ","pages":"Article 111175"},"PeriodicalIF":5.0,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Interruption strategy of fault current fed by high-capacity generator based on phase selection and current-zero prediction 基于相位选择和零流预测的大容量发电机故障电流中断策略

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2025-09-24 DOI: 10.1016/j.ijepes.2025.111162

Jinghan Fan , Weijie Wen , Bin Li , Haiyan Wang , Zhihao Zhu , Xiang Fei

{"title":"Interruption strategy of fault current fed by high-capacity generator based on phase selection and current-zero prediction","authors":"Jinghan Fan , Weijie Wen , Bin Li , Haiyan Wang , Zhihao Zhu , Xiang Fei","doi":"10.1016/j.ijepes.2025.111162","DOIUrl":"10.1016/j.ijepes.2025.111162","url":null,"abstract":"<div><div>The high asymmetrical degree (AD, >100 %) of the fault current fed by high-capacity turbine generator (HTG) results in high arc energy (<em>E</em><sub>arc</sub>), hindering reliable interruptions of generator circuit breakers (GCBs). Traditional GCBs with simultaneous three-phase separation at random moments suffer from uncontrollable arcing time and high <em>E</em><sub>arc</sub>, severely undermining the interruption reliability of GCB. To limit <em>E</em><sub>arc</sub>, GCBs with phase-separated operation mechanism should be applied, along with the first pole to clear (FPTC) selection and ideal current-zero prediction. Contributions of the paper are: first, it is revealed the phase with medium AD should be selected as the FPTC, and contacts should be controlled to separate near the current zero at the end of a small half-wave. Second, combined with FPTC selection and ideal current-zero prediction, an interruption strategy is proposed, which can limit <em>E</em><sub>arc</sub> to <50 kJ in random faults, improving the GCB interrupting reliability for highly asymmetrical currents. Simulation results verified its effectiveness.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"172 ","pages":"Article 111162"},"PeriodicalIF":5.0,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Reinforcement learning-based energy management system in the complex electric tariff environment 复杂电价环境下基于强化学习的能源管理系统

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2025-09-24 DOI: 10.1016/j.ijepes.2025.111038

Jaedong Im , Hyeonseok Seo , Jangkyum Kim , Jun Kyun Choi

{"title":"Reinforcement learning-based energy management system in the complex electric tariff environment","authors":"Jaedong Im , Hyeonseok Seo , Jangkyum Kim , Jun Kyun Choi","doi":"10.1016/j.ijepes.2025.111038","DOIUrl":"10.1016/j.ijepes.2025.111038","url":null,"abstract":"<div><div>The increasing integration of distributed energy resources has transformed power systems from traditional one-way structures into two-way interactive networks. In response, the deployment of energy storage systems at the distribution level is accelerating due to their rapid charge/discharge capabilities. As electricity tariff structures become increasingly complex, optimizing the operation of energy storage systems under such conditions has become a critical challenge for energy management systems. This paper proposes a two-stage battery management system designed to minimize operational costs in environments with complex tariff structure. In the first stage, short-term power demand is predicted by statistical approach, which achieves a prediction accuracy of 94.59%, outperforming deep learning techniques while maintaining a fast prediction and fitting time of less than one second. Based on these predictions, a Min–Max linear optimization method is applied to set an appropriate threshold, effectively reducing peak consumption. In the second stage, a battery management system based on the proximal policy optimization algorithm is introduced as a real-time operation technique, which continuously adjusts charging and discharging strategies in real-time to minimize overall operational costs with consideration of time-of-use price, baseline penalty, and battery degradation cost. Simulation results using real-world power consumption data from South Korea demonstrate that the proposed method reduces overall operational costs by 4.43% compared to conventional battery management system. The results validate the practicality and effectiveness of the proposed framework for real-time battery management under complex electricity tariff structures.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"172 ","pages":"Article 111038"},"PeriodicalIF":5.0,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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