Iet Generation Transmission & Distribution最新文献_第2页

Flexible Activation for Grid Purposes: Experiences From A Norwegian Pilot 网格目的的灵活激活：挪威飞行员的经验

IF 2.6 4区工程技术

Iet Generation Transmission & Distribution Pub Date : 2025-09-12 DOI: 10.1049/gtd2.70156

Andrei Morch, Kasper Emil Thorvaldsen, Hanne Sæle, Mariona Zhuri, Ivan Schytte

引用次数: 0

Power Oscillation Source Location Based on the Combination of Energy Function and Logistic Regression in a Fully Data-Driven Approach 基于全数据驱动的能量函数与逻辑回归相结合的功率振荡源定位

IF 2.6 4区工程技术

Iet Generation Transmission & Distribution Pub Date : 2025-09-12 DOI: 10.1049/gtd2.70155

Shujia Guo, Chao Jiang, Shuyu Zhou, Di Wu, Xu Liu

{"title":"Power Oscillation Source Location Based on the Combination of Energy Function and Logistic Regression in a Fully Data-Driven Approach","authors":"Shujia Guo, Chao Jiang, Shuyu Zhou, Di Wu, Xu Liu","doi":"10.1049/gtd2.70155","DOIUrl":"10.1049/gtd2.70155","url":null,"abstract":"With the increasing emphasis on green energy transformation, power systems are evolving into a “double high” structure characterised by a high integration of renewable energy sources and extensive use of power electronics. This transformation leads to more complex system topologies, necessitating improvements in monitoring and control measures. Traditional model-based approaches for identifying power oscillation disturbance sources are increasingly inadequate for the demands of modern power systems. The rapid development of Wide Area Measurement Systems (WAMS) has heightened interest in leveraging system response data for disturbance source localisation. This paper introduces a data-driven numerical method that combines energy functions with logistic regression, enhancing localisation accuracy by utilising power oscillation mechanisms and response data—and specifically improving accuracy by 15–22% over traditional methods. The proposed method identifies potential disturbance sources, ranging from minor random load fluctuations to significant forced power oscillations. A key innovation is the application of logistic regression for the automatic classification and localisation of disturbance sources, reducing the need for manual intervention and addressing the limitations of traditional energy function methods. Validation on WSCC 9-bus, New England 39-bus and 197-bus systems demonstrates 99.5% accuracy for single-source disturbances and 84.5-96.1% for multi-source scenarios, outperforming SVM (98.6%) and LDA (95.4%) while reducing computation time to 0.03s. By quantifying disturbance source localisation in power oscillations, this approach significantly enhances both the accuracy and efficiency of the localisation process.","PeriodicalId":13261,"journal":{"name":"Iet Generation Transmission & Distribution","volume":"19 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/gtd2.70155","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Adaptive Virtual Inertia Provision for AC and MT HVDC Grids Based on Converters' Capabilities 基于变流器能力的交流和MT直流电网自适应虚拟惯量供给

IF 2.6 4区工程技术

Iet Generation Transmission & Distribution Pub Date : 2025-09-12 DOI: 10.1049/gtd2.70154

Amir Arsalan Astereki, Mehdi Monadi, Seyed Ghodratolah Seifossadat, Alireza Saffarian, Kumars Rouzbehi

{"title":"Adaptive Virtual Inertia Provision for AC and MT HVDC Grids Based on Converters' Capabilities","authors":"Amir Arsalan Astereki, Mehdi Monadi, Seyed Ghodratolah Seifossadat, Alireza Saffarian, Kumars Rouzbehi","doi":"10.1049/gtd2.70154","DOIUrl":"10.1049/gtd2.70154","url":null,"abstract":"This paper presents a novel perspective on providing adaptive virtual inertia (AVI), aimed at improving DC voltage stability in Multi-Terminal High Voltage DC (MT-HVDC) grids while simultaneously enhancing frequency response in AC grids. The proposed approach introduces an innovative Virtual Synchronous Generator (VSG) that supplies AVI for the AC systems. Additionally, a new control strategy for the Power Electronics Converters (PECs) that supply the MT-HVDC grid is presented, referred to as dcVSG, to provide AVI for this grid. Utilising both controllers concurrently enables adaptive and simultaneous virtual inertia provision on both DC and AC grids, while effectively leveraging the operational capabilities of the PECs. In this regard, the DC voltage and the AC grid frequency are considered as control parameters. The AVI is dynamically adjusted according to the PEC operating point. Specifically, the calculated maximum AVI is sensitive to the increase and reduction of the control parameter, demonstrating appropriate distinct values in response. This behaviour aims to utilise the PEC's maximum power capacity. The small-signal stability of the proposed system is analysed by focusing on the influence of virtual inertia on overall stability. Also, to assess the stability of the proposed controllers, Lyapunov stability theory, alongside a series of detailed simulation analyses, is conducted utilising the Cigre-DCS3 test grid. The simulation outcomes indicate that the proposed coordinated strategy yields a 20% reduction in DC voltage deviation while also enhancing frequency nadir. Additionally, it achieves over a 60% decrease in the rate of change of voltage (RoCoV) on the DC side and a 68% reduction in the rate of change of frequency (RoCoF), specifically when compared to methods that rely solely on the headroom power of the PEC to deliver maximum virtual inertia.","PeriodicalId":13261,"journal":{"name":"Iet Generation Transmission & Distribution","volume":"19 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/gtd2.70154","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Comparing Active and Passive Small-Signal Stability Improvement Methods for Power Converters in Weak Grids, Considering Practical Switching Frequencies Achievable by SiC MOSFETs Versus Si IGBTs 比较弱电网中功率变换器的有源和无源小信号稳定性改进方法，考虑SiC mosfet与Si igbt可实现的实际开关频率

IF 2.6 4区工程技术

Iet Generation Transmission & Distribution Pub Date : 2025-09-09 DOI: 10.1049/gtd2.70150

Jieyu Yao, Chenqi Wu, Michael Merlin, Paul Judge

{"title":"Comparing Active and Passive Small-Signal Stability Improvement Methods for Power Converters in Weak Grids, Considering Practical Switching Frequencies Achievable by SiC MOSFETs Versus Si IGBTs","authors":"Jieyu Yao, Chenqi Wu, Michael Merlin, Paul Judge","doi":"10.1049/gtd2.70150","DOIUrl":"10.1049/gtd2.70150","url":null,"abstract":"With advancements in semiconductor technology, switching frequencies of 10–20 kHz, enabled by SiC MOSFETs, are becoming viable for megawatt-scale converters, significantly reducing switching losses and filter size. This highlights SiC MOSFETs' potential in future power conversion. However, careful system design is crucial for stable operation. This paper examines active and passive methods to improve small-signal stability in weak grids across practical switching frequencies achievable by SiC MOSFETs and Si IGBTs. Multi-parallel inverters and various grid scenarios emulate real-world conditions. The findings reveal that while both damping methods enhance stability margins, they exhibit distinct trade-offs. Passive damping, requiring a lower quality factor at lower switching frequencies, results in higher damping losses, while active damping achieves similar stability with minimal losses. Both improve resonance stability but have limited impact on low frequencies. Additionally, results show that combining a phase compensator with active damping improves stability for both low and high-frequency ranges. A summary table presenting the analysis of component costs, power losses and system stability margins for different converter designs was provided, which can assist designers in identifying trade-offs to achieve the optimal design with Si IGBTs and SiC MOSFETs for the targeted application.","PeriodicalId":13261,"journal":{"name":"Iet Generation Transmission & Distribution","volume":"19 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/gtd2.70150","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Real-Time Microgrid Dispatching Considering Renewable Uncertainties: An Improved Approximate Dynamic Programming Method 考虑可再生能源不确定性的微电网实时调度：一种改进的近似动态规划方法

IF 2.6 4区工程技术

Iet Generation Transmission & Distribution Pub Date : 2025-09-08 DOI: 10.1049/gtd2.70145

Bingruo Yin, Gengfeng Li, Yuxiong Huang, Zhaohong Bie

引用次数: 0

An Optimization-Based Line-Wise Approach for Accurate Radial Distribution System State Estimation 一种基于优化的径向配电系统状态精确估计方法

IF 2.6 4区工程技术

Iet Generation Transmission & Distribution Pub Date : 2025-09-08 DOI: 10.1049/gtd2.70149

Amir Reza Nikzad, Thiago R. Fernandes, Bala Venkatesh, Fernanda C. L. Trindade

{"title":"An Optimization-Based Line-Wise Approach for Accurate Radial Distribution System State Estimation","authors":"Amir Reza Nikzad, Thiago R. Fernandes, Bala Venkatesh, Fernanda C. L. Trindade","doi":"10.1049/gtd2.70149","DOIUrl":"10.1049/gtd2.70149","url":null,"abstract":"Distribution system state estimation (DSSE) is an essential tool for the effective operation and management of modern distribution systems. A common challenge in DSSE is ensuring accurate estimates despite limited real-time measurements and high pseudo-measurement errors. This paper presents a novel line-wise state estimator (LW-SE) for radial distribution systems, leveraging conic quadratic optimization to transform the non-convex state estimation problem into a convex one. This transformation enhances the accuracy of the state estimation process. Unlike traditional methods, the LW-SE formulation uses line impedances rather than admittances, addressing issues associated with low-impedance branches and leading to more stable power flow representations. Furthermore, the method accommodates diverse types of measurements without requiring paired active and reactive power measurements, their equivalent forms, or phase angle measurements as inputs—while still enabling accurate phase angle estimation. Results of case studies and comparisons with traditional state estimators (T-SE) demonstrate the effectiveness of the LW-SE with accuracy improvement ranging from 60% to 82% in scenarios with low availability of real-time measurements and high errors in pseudo-measurement. In scenarios involving gross measurement errors, the LW-SE consistently delivered lower MAPEs than the weighted least squares (WLS) and weighted least absolute value (WLAV) state estimators, while maintaining computational efficiency. These findings underscore the LW-SE's suitability for modern distribution system applications.","PeriodicalId":13261,"journal":{"name":"Iet Generation Transmission & Distribution","volume":"19 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/gtd2.70149","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Distributionally Robust Allocation of Energy Storage Integrated With Soft Open Points Coordinating Flexibility and Resilience 柔性与弹性相协调的软开放点分布式鲁棒储能配置

IF 2.6 4区工程技术

Iet Generation Transmission & Distribution Pub Date : 2025-09-05 DOI: 10.1049/gtd2.70142

Bingkai Huang, Yuxiong Huang, Qianwen Hu, Gengfeng Li, Zhaohong Bie

{"title":"Distributionally Robust Allocation of Energy Storage Integrated With Soft Open Points Coordinating Flexibility and Resilience","authors":"Bingkai Huang, Yuxiong Huang, Qianwen Hu, Gengfeng Li, Zhaohong Bie","doi":"10.1049/gtd2.70142","DOIUrl":"10.1049/gtd2.70142","url":null,"abstract":"The large-scale integration of renewable distributed generators (DGs) and the increasing frequency of extreme events have heightened the demand for enhanced flexibility and resilience in distribution networks. Energy storage integrated with soft open points (E-SOPs) can improve both flexibility and resilience temporally and spatially. This paper presents a distributionally robust optimisation with a hybrid ambiguity set (HASDRO) method for E-SOPs allocation, aiming to enhance renewable energy consumption and operation efficiency under normal scenarios, while ensuring load supply during extreme events. The proposed hybrid ambiguity set combines a Wasserstein metric-based ambiguity set to capture the probability distributions of DG output and load demand, and a first-order moment-based ambiguity set to represent line outages. A two-stage HASDRO model is then formulated to optimise the planning and operation of E-SOPs, and to minimise total investment and worst-case expected operation costs, including DG curtailment and line loss penalties in normal scenarios as well as load shedding penalties in extreme events. The proposed HASDRO model is reformulated into an equivalent three-level model and solved by the customised column-and-constraint generation algorithm. Finally, the proposed method is validated on a modified IEEE 33-bus system, with the optimal E-SOP configuration comprising an ESS of 1.5 MW / 2.74 MWh and SOPs of 2.1 MVA. The results demonstrate a 43.10% reduction in line losses a 56.15% decrease in DG curtailment in normal scenarios, and a 52.24% reduction in load shedding during extreme events, highlighting the model's effectiveness in enhancing network flexibility and resilience.","PeriodicalId":13261,"journal":{"name":"Iet Generation Transmission & Distribution","volume":"19 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/gtd2.70142","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Deployment of GRN-PBIL Framework With Integrated DG-DRM in Electric Vehicle Charge Scheduling for Welfare Maximisation 集成DG-DRM的GRN-PBIL框架在电动汽车福利最大化充电调度中的部署

IF 2.6 4区工程技术

Iet Generation Transmission & Distribution Pub Date : 2025-09-05 DOI: 10.1049/gtd2.70148

Rajkumar Kasi, Chandrasekaran Nayanatara, Jeevarathinam Baskaran

{"title":"Deployment of GRN-PBIL Framework With Integrated DG-DRM in Electric Vehicle Charge Scheduling for Welfare Maximisation","authors":"Rajkumar Kasi, Chandrasekaran Nayanatara, Jeevarathinam Baskaran","doi":"10.1049/gtd2.70148","DOIUrl":"10.1049/gtd2.70148","url":null,"abstract":"The rapid adoption of electric vehicles (EVs) in recent years has led to a surge in power demand, presenting challenges in maintaining grid stability and efficiency. In response, service providers must integrate EVs with renewable energy sources while addressing the intermittent nature of distributed generation (DG) and fluctuating demand. Demand response management (DRM) offers a solution by aligning energy usage with renewable energy availability and optimising grid performance. Modern distribution systems advocate for the prediction of station usage and service availability to estimate charging demand. This research explores the use of a gated recurrent network (GRN) model for scheduling EV charging, with the goal of reducing peak demand. The integration of optimal DRM with DG further enhances the performance. The proposed scheduling algorithm incorporates DG-DRM to predict charging needs and alleviate peak load in the IEEE 33-bus system and the real-time utility network (RTUN)-17 bus test system. Consumer participation in DRM maximises the total social benefit by lowering generation costs and congestion indices. A heuristic GRN model, combined with a probability-based incremental learning algorithm, is introduced to tackle multi-objective optimisation. The algorithm is tested across various scenarios, with EV scheduling carried out in the first phase and DRM with DG parameters optimised in the second. The results show the algorithm's superior performance in achieving the objective function compared to other computational methods.","PeriodicalId":13261,"journal":{"name":"Iet Generation Transmission & Distribution","volume":"19 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/gtd2.70148","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144998783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A Hybrid Control Strategy to Boost Robustness and Harmonic Suppression Ability of Grid-Tied Inverter in Weak Grid with Background Harmonics 一种增强背景谐波弱电网并网逆变器鲁棒性和谐波抑制能力的混合控制策略

IF 2.6 4区工程技术

Iet Generation Transmission & Distribution Pub Date : 2025-09-03 DOI: 10.1049/gtd2.70143

Damin Zhang, Jinping Huang, BinBin Chen, Jiongqiong Cao, Yuanzhong Zhang

{"title":"A Hybrid Control Strategy to Boost Robustness and Harmonic Suppression Ability of Grid-Tied Inverter in Weak Grid with Background Harmonics","authors":"Damin Zhang, Jinping Huang, BinBin Chen, Jiongqiong Cao, Yuanzhong Zhang","doi":"10.1049/gtd2.70143","DOIUrl":"10.1049/gtd2.70143","url":null,"abstract":"The operational robustness of grid-tied inverters is critically challenged under weak grid conditions characterized by wide variations in grid impedance, while background harmonics in grid voltage induced by nonlinear loads severely degrade current quality. To address these dual challenges, this paper proposes a hybrid control strategy integrating an outer-loop repetitive control (RC) with an inner-loop proportional-phase lag compensation (PPLC) architecture. The proposed approach first establishes an equivalent current loop model and employs the PPLC strategy to stabilize system operation across a broad range of grid impedance fluctuations. Subsequently, an outer-loop RC scheme is systematically designed to enhance harmonic suppression. Key innovations include the implementation of a zero-phase-shift low-pass filter as the inner model parameter in the outer loop, combined with a compensator comprising a second-order low-pass filter, a phase-lead network, and an adaptive gain coefficient. Comprehensive simulations and experimental validations conducted on a semi-physical platform demonstrate that the hybrid strategy effectively maintains system stability under broad grid impedance variations (up to 18mH) and severe background harmonic distortion. The controlled grid current exhibits total harmonic distortion below 2%, satisfying IEEE 1547 standards while achieving superior robustness and enhanced harmonic attenuation. This dual-loop architecture provides a systematic solution for grid-tied inverters operating in challenging weak grid environments with nonlinear load disturbances.","PeriodicalId":13261,"journal":{"name":"Iet Generation Transmission & Distribution","volume":"19 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/gtd2.70143","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144929526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A Dual-Stage Optimisation Model for Multi-Microgrid Energy Management: Balancing Economic, Environmental and Social Objectives 多微电网能源管理的双阶段优化模型：平衡经济、环境和社会目标

IF 2.6 4区工程技术

Iet Generation Transmission & Distribution Pub Date : 2025-09-02 DOI: 10.1049/gtd2.70146

Payman Rezaei, Masoud AliAkbar Golkar

{"title":"A Dual-Stage Optimisation Model for Multi-Microgrid Energy Management: Balancing Economic, Environmental and Social Objectives","authors":"Payman Rezaei, Masoud AliAkbar Golkar","doi":"10.1049/gtd2.70146","DOIUrl":"10.1049/gtd2.70146","url":null,"abstract":"This paper introduces a novel two-stage energy management approach to optimise the operation of multi-microgrid systems in uncertain conditions. The first stage employs a multi-objective optimisation model for day-ahead scheduling, focusing on minimising costs and emissions while maximising social welfare. To generate accurate forecasts for renewable generation and demand, a long short-term memory (LSTM) neural network is employed for time-series forecasting, providing reliable inputs to the optimisation framework. The economic welfare maximisation framework accommodates diverse stakeholder interests. In the second stage, the day-ahead schedule is updated every 5 min based on real-time conditions to mitigate imbalance costs. The proposed approach integrates real-time information, enabling efficient adaptation to changing circumstances. Case studies evaluate the approach, showing a significant 15% reduction in emissions compared to a conventional cost minimisation model. Social welfare is enhanced by approximately 12%. These findings highlight the economic viability of integrating high levels of renewable energy by coordinating multiple microgrids and leveraging distributed energy resources. The paper emphasises the environmental and social benefits of a multi-objective microgrid management strategy within the emerging transactive energy systems paradigm. The proposed two-stage energy management approach offers a robust framework for optimising multi-microgrid systems, contributing to a sustainable and efficient energy future.","PeriodicalId":13261,"journal":{"name":"Iet Generation Transmission & Distribution","volume":"19 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/gtd2.70146","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144927541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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