IET Smart Grid最新文献_第9页

Secondary control with reduced communication requirements for accurate reactive power sharing in AC microgrids 减少通信要求的二次控制，实现交流微电网中精确的无功功率共享

IF 2.3

IET Smart Grid Pub Date : 2023-10-25 DOI: 10.1049/stg2.12127

Mehdi Baharizadeh, Mohammad Sadegh Golsorkhi, Mehdi Savaghebi

{"title":"Secondary control with reduced communication requirements for accurate reactive power sharing in AC microgrids","authors":"Mehdi Baharizadeh, Mohammad Sadegh Golsorkhi, Mehdi Savaghebi","doi":"10.1049/stg2.12127","DOIUrl":"10.1049/stg2.12127","url":null,"abstract":"A secondary control method is proposed for accurate reactive power sharing as well as frequency and voltage restoration in islanded AC microgrids (MGs). The proposed method consists of an MG secondary controller, local secondary controllers for distributed energy resources (DERs), and a low-bandwidth communication link for broadcasting common data from the MG secondary controller to DERs. The broadcasted data includes the MG point of common coupling voltage magnitude and a common vertical shift for frequency and voltage restoration. Local secondary controllers calculate specific shifts for the Q-V droop characteristic of each dispatchable DER and the V-Q reverse droop characteristic of each photovoltaic (PV) system, aligning their operating points with the Q-VPCC and VPCC-Q droop characteristics, respectively. By employing VPCC as a common global variable, coordination of reactive power generation of all dispatchable DERs and PV systems is achieved, enabling accurate reactive power sharing. Importantly, in the proposed scheme, the required communication bandwidth and the communication burden are minor and are not increased with the number of DERs. Additionally, the DERs are relieved of the need for data transmission capability. The small signal stability of the proposed method is examined and its effectiveness is validated through Hardware-in-the-Loop (HIL) experimental results.","PeriodicalId":36490,"journal":{"name":"IET Smart Grid","volume":"6 6","pages":"638-652"},"PeriodicalIF":2.3,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/stg2.12127","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135168265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Privacy-preserving peak time forecasting with Learning to Rank XGBoost and extensive feature engineering 利用 "学习排名 XGBoost "和广泛的特征工程进行保护隐私的高峰时间预测

IF 2.3

IET Smart Grid Pub Date : 2023-10-22 DOI: 10.1049/stg2.12137

Leo Semmelmann, Oliver Resch, Sarah Henni, Christof Weinhardt

{"title":"Privacy-preserving peak time forecasting with Learning to Rank XGBoost and extensive feature engineering","authors":"Leo Semmelmann, Oliver Resch, Sarah Henni, Christof Weinhardt","doi":"10.1049/stg2.12137","DOIUrl":"10.1049/stg2.12137","url":null,"abstract":"In modern power systems, predicting the time when peak loads will occur is crucial for improving efficiency and minimising the possibility of network sections becoming overloaded. However, most works in the load forecasting field are not focusing on a dedicated peak time forecast and are not dealing with load data privacy. At the same time, developing methods for forecasting peak electricity usage that protect customers' data privacy is essential since it could encourage customers to share their energy usage data, leading to more data points for the effective management and planning of power grids. Hence, the authors employ a dedicated Learning to Rank XGBoost algorithm to forecast peak times with only ranks of loads instead of absolute load magnitudes as input data, thereby offering potential privacy-preserving properties. We show that the presented Learning to Rank XGBoost model yields comparable results to a benchmark XGBoost load forecasting model. Additionally, we describe our extensive feature engineering process and a state-of-the-art Bayesian hyperparameter optimisation for selecting model parameters, which leads to a significant improvement of forecasting accuracy. Our method was used in the context of the final round of the international BigDEAL load forecasting challenge 2022, where we consistently achieved high-ranking results in the peak time track and an overall fourth rank in the peak load forecasting track with our general XGBoost model.","PeriodicalId":36490,"journal":{"name":"IET Smart Grid","volume":"7 2","pages":"172-185"},"PeriodicalIF":2.3,"publicationDate":"2023-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/stg2.12137","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135462202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Control coordination in inverter-based microgrids using AoI-based 5G schedulers 使用基于 AoI 的 5G 调度器协调基于逆变器的微电网中的控制

IF 2.3

IET Smart Grid Pub Date : 2023-10-13 DOI: 10.1049/stg2.12136

Biplav Choudhury, Ardavan Mohammadhassani, Brady Alexander, Rahul Iyer, Ali Mehrizi-Sani, Jeffrey H. Reed, Vijay K. Shah

{"title":"Control coordination in inverter-based microgrids using AoI-based 5G schedulers","authors":"Biplav Choudhury, Ardavan Mohammadhassani, Brady Alexander, Rahul Iyer, Ali Mehrizi-Sani, Jeffrey H. Reed, Vijay K. Shah","doi":"10.1049/stg2.12136","DOIUrl":"10.1049/stg2.12136","url":null,"abstract":"A coordinated set point automatic adjustment with correction enabled (C-SPAACE) framework that uses 5G communication for real-time control coordination between inverter-based resources (IBR) in microgrids is proposed. Utilising slicing capability, 5G offers low-latency communication to C-SPAACE under normal conditions. However, given the multitude of power grid use cases, a certain 5G slice for C-SPAACE may have access only to limited radio spectrum resources, which if not managed well, greatly undermines the communication needs of C-SPAACE framework. Thus, optimally scheduling the available spectrum resources among IBRs in a sliced 5G network-based C-SPAACE framework becomes a critical problem. To address this issue, the authors utilise a novel age of information (AoI) metric and designs an AoI-based 5G scheduler to provide low-latency communication to C-SPAACE. Following this, a co-simulation environment is designed using PSCAD/EMTDC and Python to simulate a microgrid supported by 5G communication. Time-domain simulation case studies are performed using the proposed co-simulation environment to evaluate the performance of C-SPAACE using 5G with both AoI-based and other baseline (non-AoI) schedulers.","PeriodicalId":36490,"journal":{"name":"IET Smart Grid","volume":"7 1","pages":"38-50"},"PeriodicalIF":2.3,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/stg2.12136","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135918010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Distributed feedback optimisation based optimal power flow control in fully inverter based islanded AC microgrids 基于分布式反馈优化的全逆变器孤岛式交流微电网优化功率流控制

IF 2.3

IET Smart Grid Pub Date : 2023-10-10 DOI: 10.1049/stg2.12132

Y. Cheng, Tao Liu, David John Hill

{"title":"Distributed feedback optimisation based optimal power flow control in fully inverter based islanded AC microgrids","authors":"Y. Cheng, Tao Liu, David John Hill","doi":"10.1049/stg2.12132","DOIUrl":"10.1049/stg2.12132","url":null,"abstract":"A novel distributed feedback optimisation (FO) based control method is proposed to control grid-forming inverters (GFMIs) in fully inverter-based islanded AC microgrids (MGs). The proposed controller has two control layers. The upper layer uses FO to calculate the frequency and voltage setpoints of GFMIs, whereas the lower layer makes GFMIs track these setpoints. The proposed control method takes advantage of the flexibility of voltage control to regulate the system frequency, maintain both active power and reactive power sharing accuracies, keep bus voltage within allowable range and meanwhile preserves the optimality of the closed-loop system in term of optimal power flow. The gradient descent method is used to solve the proposed FO problem based on the real-time measurements in the MGs, which is implemented in a distributed way, and thus eliminates the need for a central controller. Case studies show the effectiveness of the proposed method.The cover image is based on the Research Article Distributed feedback optimisation based optimal power flow control in fully inverter based islanded AC microgrids by Y. Cheng et al., https://doi.org/10.1049/stg2.12132.","PeriodicalId":36490,"journal":{"name":"IET Smart Grid","volume":"6 6","pages":"572-584"},"PeriodicalIF":2.3,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/stg2.12132","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136294324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ecc-RCNN: An efficient and high-accuracy object detection framework for transmission line defect identification Ecc-RCNN：用于输电线路缺陷识别的高效、高精度目标检测框架

IF 2.3

IET Smart Grid Pub Date : 2023-10-08 DOI: 10.1049/stg2.12135

Yaocheng Li, Yongpeng Xu, Weihao Sun, Qinglin Qian, Zhe Li, Xiuchen Jiang

{"title":"Ecc-RCNN: An efficient and high-accuracy object detection framework for transmission line defect identification","authors":"Yaocheng Li, Yongpeng Xu, Weihao Sun, Qinglin Qian, Zhe Li, Xiuchen Jiang","doi":"10.1049/stg2.12135","DOIUrl":"10.1049/stg2.12135","url":null,"abstract":"In order to improve the accuracy of image-based transmission line defect detection, while reducing the computational complexity and the high demand on chip performance, an object detection framework is proposed, which aims to improve model performance without increasing the scale of the model and the amount of calculation. An efficient feature fusion module to combine different-level semantic features in non-linear transformations is introduced. It includes channel-level hierarchy features, linear projection and residual mappings to gather task-oriented features across different spatial locations and scales. Then a context information modelling module is proposed to extract features around the target objects, which further increases the detection accuracy. Finally, an Intersection-over-Union-based training examples sampling strategy is adopted to alleviate the class imbalance problem. Experiments on dataset show that the proposed method, with a similar number of model parameters, has an accuracy improved by 8.1% compared to the baseline, and outperforms all the competitors in the area of transmission line defect detection.","PeriodicalId":36490,"journal":{"name":"IET Smart Grid","volume":"7 1","pages":"28-37"},"PeriodicalIF":2.3,"publicationDate":"2023-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/stg2.12135","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135251328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Medium-term forecasting of daily aggregated peak loads from heat pumps using clustering-based load duration curves to calculate the annual impact on medium to low voltage transformers 利用基于聚类的负荷持续时间曲线，对热泵的日汇总峰值负荷进行中期预测，以计算对中低压变压器的年度影响

IF 2.3

IET Smart Grid Pub Date : 2023-10-05 DOI: 10.1049/stg2.12134

George Rouwhorst, Albert Pondes, Phuong H. Nguyen, Han Slootweg

{"title":"Medium-term forecasting of daily aggregated peak loads from heat pumps using clustering-based load duration curves to calculate the annual impact on medium to low voltage transformers","authors":"George Rouwhorst, Albert Pondes, Phuong H. Nguyen, Han Slootweg","doi":"10.1049/stg2.12134","DOIUrl":"10.1049/stg2.12134","url":null,"abstract":"The energy transition drives the adoption of heat pumps (HPs). Their peak loads have a large impact on distribution networks. Therefore, the proposed methodology calculates the annual impact on medium to low voltage (MV/LV) transformers based on a medium-term forecast of daily aggregated peak loads from HPs using the number, their rated power, a normalised load duration curve, and the daily average ambient temperature. The forecast differentiates between daily aggregated peak loads of HPs with different heating demands and the varying impact due to seasonal weather differences. First, 221 measured residential HPs over two years were randomly selected and clustered to identify different heating demands. These clusters were used to calculate four representation functions. Second, 108 other measured HPs were clustered and used to forecast the aggregated peak load with the calculated four representation functions. These forecasts were used to calculate the annual impact on an MV/LV transformer with a daily time resolution. These results indicate the periods over a year that the MV/LV transformer is at risk of congestion and it indicates the potential to mitigate congestion through demand-side management.","PeriodicalId":36490,"journal":{"name":"IET Smart Grid","volume":"7 2","pages":"157-171"},"PeriodicalIF":2.3,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/stg2.12134","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134975518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy management strategies of hybrid electric vehicles: A comparative review 混合动力电动汽车的能源管理策略：比较综述

IF 2.3

IET Smart Grid Pub Date : 2023-09-20 DOI: 10.1049/stg2.12133

Naser Azim Mohseni, Navid Bayati, Thomas Ebel

{"title":"Energy management strategies of hybrid electric vehicles: A comparative review","authors":"Naser Azim Mohseni, Navid Bayati, Thomas Ebel","doi":"10.1049/stg2.12133","DOIUrl":"10.1049/stg2.12133","url":null,"abstract":"With increasing environmental problems, including air pollution, rising greenhouse gases and global warming, the need to use clean energy resources seems essential. Therefore, the usage of clean and renewable energy sources is suggested as a suitable solution to overcome the mentioned concerns. The transportation section contributes to a huge percentage of energy consumption. Hybrid electric vehicles (HEVs), by combining several energy resources, are considered as a crucial solution to decrease fossil fuel consumption and improve the environmental challenges. The existence of an alternative energy resource and the internal combustion engine together provides optimal power distribution among them to maximise power usage and minimise fuel consumption. Energy management strategy (EMS) is an essential challenge in HEV's design procedure to deal with the power distribution in multiple power source systems to improve the performance of the HEVs. A review of various EMSs for HEVs, followed by an analysis of each type, including its benefits and drawbacks, is presented by the authors. In addition to this, the major challenges in EMSs for HEVs are described and a comprehensive review is presented for strategies addressing these issues.","PeriodicalId":36490,"journal":{"name":"IET Smart Grid","volume":"7 3","pages":"191-220"},"PeriodicalIF":2.3,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/stg2.12133","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136314866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Model predictive direct torque control of a three-phase four-switch inverter induction motor driving system 三相四开关变频器感应电机驱动系统的模型预测直接转矩控制

IF 2.3

IET Smart Grid Pub Date : 2023-09-08 DOI: 10.1049/stg2.12131

Jialong Qu, Kerui Li, Shuo Yan

{"title":"Model predictive direct torque control of a three-phase four-switch inverter induction motor driving system","authors":"Jialong Qu, Kerui Li, Shuo Yan","doi":"10.1049/stg2.12131","DOIUrl":"10.1049/stg2.12131","url":null,"abstract":"With the development of power electronics and motor driving system, AC motor speed control or the servo system has been widely explored. Among them, the Induction Motor (IM) driving based on a three-phase six-switch inverter has become a mature technology for a wide range of applications. However, in some scenarios, a certain fault-tolerant ability and further cost savings are required. Under this circumstance, the motor driving system based on the three-phase four-switch inverter is proposed. However, it has fewer voltage vectors, with unequal amplitudes, spatial asymmetry, and no zero vector, which will inevitably lead to the deterioration of the control performance. In this study, the operation of the four-switch inverter IM driving is analysed in detail. The model predictive direct torque control (MPDTC) is proposed to obtain better static and dynamic characteristics. Through the simulation and experimental studies, the control algorithm is verified to drive a 2.2 kW IM. Compared with the conventional DTC, the proposed MPDTC has a rapid dynamic response and greatly reduces the torque and flux ripple in a steady state.","PeriodicalId":36490,"journal":{"name":"IET Smart Grid","volume":"6 6","pages":"585-595"},"PeriodicalIF":2.3,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/stg2.12131","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136361786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Risk-based stochastic scheduling of centralised and distributed energy storage systems 基于风险的集中式和分布式储能系统随机调度

IF 2.3

IET Smart Grid Pub Date : 2023-09-07 DOI: 10.1049/stg2.12125

Majid Majidi, Masood Parvania, Raymond Byrne

{"title":"Risk-based stochastic scheduling of centralised and distributed energy storage systems","authors":"Majid Majidi, Masood Parvania, Raymond Byrne","doi":"10.1049/stg2.12125","DOIUrl":"10.1049/stg2.12125","url":null,"abstract":"The authors propose a continuous-time two-stage stochastic optimisation model for the integration of centralised and distributed energy storage (ES) systems into power systems with high levels of volatile renewable generation. In the proposed model, centralised and distributed ES systems, respectively, controlled by the independent system operator and distribution system operator, can offer energy and flexibility to the operation of the power system in order to help accommodate the uncertainties of renewable generation and load. The proposed model considers the power network constraints and minimises the day-ahead and real-time operation costs of the system in the first and second stages. The proposed model utilises energy and ramping flexibility trajectories of ES systems to enhance the cost-effective operation of the power system, countering the financial risks imposed by the integration of uncertain load and renewable generation. Simulations are conducted on the IEEE 24-bus reliability test system with multiple risk-aversion levels for the power system operator, and the results demonstrate the efficiency of the proposed model in utilising the ES systems to provide energy and ramping flexibility and reducing the financial risks measured by the conditional value at risk.","PeriodicalId":36490,"journal":{"name":"IET Smart Grid","volume":"6 6","pages":"596-608"},"PeriodicalIF":2.3,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/stg2.12125","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44169642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 robust optimal distributed control design for simultaneous voltage regulation and current sharing in DC microgrid 直流微电网稳压共流鲁棒优化分布式控制设计

IF 2.3

IET Smart Grid Pub Date : 2023-08-22 DOI: 10.1049/stg2.12130

Ali Amirparast, S. Kamal Hosseini Sani

{"title":"A robust optimal distributed control design for simultaneous voltage regulation and current sharing in DC microgrid","authors":"Ali Amirparast, S. Kamal Hosseini Sani","doi":"10.1049/stg2.12130","DOIUrl":"10.1049/stg2.12130","url":null,"abstract":"In this article, a robust optimal distributed controller is designed for achieving average voltage regulation and current sharing in a DC microgrid. Each distributed generation unit (DGU) consists of a DC-DC buck converter that supplies a local constant current load. The proposed controller only utilises output currents of converters and the possible maximum error values in estimation of series resistance in the RLC filter used in each DGU. The proposed controller is formed such that the possible estimation error is considered as an uncertain parameter. In addition to obtaining two main objectives, average voltage regulation, and current sharing, a robust control problem is solved through an optimal control technique to calculate controller parameters such that the stability of the grid is guaranteed. The stability of the closed loop system with parametric uncertainty is proved through Lyapunov analysis. The closed loop system with the suggested controller is tested by simulations and through different scenarios to reveal the reliable and satisfactory performance of the proposed robust optimal control structure.","PeriodicalId":36490,"journal":{"name":"IET Smart Grid","volume":"6 6","pages":"653-665"},"PeriodicalIF":2.3,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/stg2.12130","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43492961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0