International Journal of Electrical Power & Energy Systems最新文献_第6页

Data-driven transient stability analysis using the Koopman operator 利用库普曼算子进行数据驱动的瞬态稳定性分析

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2024-10-23 DOI: 10.1016/j.ijepes.2024.110307

Amar Ramapuram Matavalam , Boya Hou , Hyungjin Choi , Subhonmesh Bose , Umesh Vaidya

引用次数: 0

Coordinative optimization for wind farms considering improved fatigue load index 考虑改进疲劳载荷指数的风电场协调优化

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2024-10-23 DOI: 10.1016/j.ijepes.2024.110282

Lei Fu , Jia Liu , Yixiao Gao , Yixin Zhou , Fang Xu , Xi Deng

{"title":"Coordinative optimization for wind farms considering improved fatigue load index","authors":"Lei Fu , Jia Liu , Yixiao Gao , Yixin Zhou , Fang Xu , Xi Deng","doi":"10.1016/j.ijepes.2024.110282","DOIUrl":"10.1016/j.ijepes.2024.110282","url":null,"abstract":"<div><div>In the wind farm(WF), there exists a serious uneven distribution of damage equivalent load(DEL) on the wind turbine(WT), which increases the maintenance cost of wind power generation. Previous researches focus on a single objective such as the total or the standard deviation of fatigue loads for optimal control. To address these, this paper proposes a coordinative optimization by considering an improved fatigue load index. The coordinative optimization is achieved on both WF level and WT level. For WF level, a state-space model is built for the active power dispatch by utilizing small signal linearization. Then, an improved sensitivity analysis is performed to evaluate the fatigue load on the component of the tower and shaft. Further, a coordinative multi-objective function is designed, which minimizes the total DEL of the WF, and balances the individual fatigue load distribution of the WT. For WT level, an adaptive internal model control is proposed to suppress both tower vibrations and torque fluctuation of the main shaft. Several experiments are performed to verify the significance of the proposed method with the weight analysis of power and load coefficient. The comparison results reveals the superiority of the coordinative optimization in restraining the total DEL of the WF, balancing WF fatigue distribution, decreasing the DEL of the single WT, and satisfying the power reference tracking simultaneously.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"162 ","pages":"Article 110282"},"PeriodicalIF":5.0,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 review on application of machine learning-based methods for power system inertia monitoring 基于机器学习的电力系统惯性监测方法应用综述

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2024-10-22 DOI: 10.1016/j.ijepes.2024.110279

Mahdi Heidari , Lei Ding , Mostafa Kheshti , Weiyu Bao , Xiaowei Zhao , Marjan Popov , Vladimir Terzija

{"title":"A review on application of machine learning-based methods for power system inertia monitoring","authors":"Mahdi Heidari , Lei Ding , Mostafa Kheshti , Weiyu Bao , Xiaowei Zhao , Marjan Popov , Vladimir Terzija","doi":"10.1016/j.ijepes.2024.110279","DOIUrl":"10.1016/j.ijepes.2024.110279","url":null,"abstract":"<div><div>The modernization of electrical power systems is reflected through the integration of renewable energy resources, with the ultimate aim of creating a carbon–neutral world. However, this goal has brought new and complex challenges for the power system, with one of the most crucial issues which is the reduction of system inertia. The decrease in system inertia has led to severe difficulties in maintaining frequency stability. As a result, power system operators must continuously monitor the system inertia and when necessary to activate appropriate preventive measures, ensuring a reliable and secure operation of the power system. Fortunately, wide-area monitoring systems can provide the necessary measurements to monitor and analyze system behavior, assisting system operators in undertaking optimal actions. This paper provides a review of recent publications that apply machine learning (ML)-based methods for monitoring power system inertia. It also provides an overview of academic and industrial projects related to ML-based methods for inertia monitoring. Furthermore, the paper explores applications based on ML-based methods and inertia. Lastly, the paper briefly discusses future directions for the development of this research field.</div><div>© 2017 Elsevier Inc. All rights reserved.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"162 ","pages":"Article 110279"},"PeriodicalIF":5.0,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142537868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Solving the security constrained unit commitment problem: Three novel approaches 解决安全受限的单位承诺问题：三种新方法

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2024-10-22 DOI: 10.1016/j.ijepes.2024.110213

Alessandro Francesco Castelli , Iiro Harjunkoski , Jan Poland , Marco Giuntoli , Emanuele Martelli , Ignacio E. Grossmann

{"title":"Solving the security constrained unit commitment problem: Three novel approaches","authors":"Alessandro Francesco Castelli , Iiro Harjunkoski , Jan Poland , Marco Giuntoli , Emanuele Martelli , Ignacio E. Grossmann","doi":"10.1016/j.ijepes.2024.110213","DOIUrl":"10.1016/j.ijepes.2024.110213","url":null,"abstract":"<div><div>This work proposes three novel approaches to speed up the solution of the Security Constrained Unit Commitment problem: an improvement of an active-set iterative approach taken from literature, an approach using solver callback functions for the evaluation of system and security constraints in the branch-and-bound tree, and one based on a shrinking horizon decomposition integrated with the use of callback functions. The three approaches were tested over five different case studies and compared against an approach taken from literature to assess scalability and performance. Results show that the modified iterative approach is always faster than the original one reported in the literature (between −58% and −93% run time), while the callback-based method does not reduce the computational time of large-scale instances. Finally, the shrinking-horizon-based approach was proved to be the fastest (up to −98% less time) despite not guaranteeing optimality (about 1% suboptimal).</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"162 ","pages":"Article 110213"},"PeriodicalIF":5.0,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Direct modulation in MMC-Based multiterminal hybrid Microgrid: A solution for arm capacitor voltage balancing under unbalanced power distribution 基于 MMC 的多终端混合微电网中的直接调制：不平衡配电下的臂式电容器电压平衡解决方案

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2024-10-22 DOI: 10.1016/j.ijepes.2024.110274

Ahmed G. Abo-Khalil , Safia Babikir Bashir , Mena Maurice Farag , Ali A. Adam Ismail , Abdul-Kadir Hamid , Nsilulu T Mbungu , Ramesh C. Bansal , A. Elnady , Nirav Patel

{"title":"Direct modulation in MMC-Based multiterminal hybrid Microgrid: A solution for arm capacitor voltage balancing under unbalanced power distribution","authors":"Ahmed G. Abo-Khalil , Safia Babikir Bashir , Mena Maurice Farag , Ali A. Adam Ismail , Abdul-Kadir Hamid , Nsilulu T Mbungu , Ramesh C. Bansal , A. Elnady , Nirav Patel","doi":"10.1016/j.ijepes.2024.110274","DOIUrl":"10.1016/j.ijepes.2024.110274","url":null,"abstract":"<div><div>The rising interest in hybrid alternating current (AC)/ direct current (DC) microgrids among the global research community can be attributed to the widespread adoption of distributed generation systems (DGs). Therefore, this study applies the modular multilevel converter (MMC) in interconnected microgrids to serve as an interlinking converter involving the AC and DC systems. In this topology, the MMC consists of several submodules (SMs) where a low-voltage direct current (LVDC) microgrid is connected to the output of each SM through a dual active bridge (DAB) converter. As a result of using this topology, more LVDC microgrids can be linked, thus enhancing power transition feasibility. However, during unequal power distribution across LVDC microgrids, the arm capacitor voltage balancing becomes a challenging task and if left unsolved, it will result in unbalanced output voltage at the MMC terminal, thereby affecting the overall system. Therefore, this paper proposes the use of the direct modulation method that is capable of naturally producing fundamental and DC components of the circulating current within the MMC. These circulating current components are responsible for uniformly distributing the energy between the arms of the MMC and balancing the arm capacitor voltage. The effectiveness of the proposed method is further assessed through real-time simulation in the OPAL-RT (OP5700) environment. The findings of this study validate that direct modulation can maintain the optimal performance of a multiterminal hybrid microgrid based on MMC under unbalanced power conditions without applying additional controllers, thus simplifying the system design, and improving the overall efficiency.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"162 ","pages":"Article 110274"},"PeriodicalIF":5.0,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Two-layer distributed control of hybrid AC/DC microgrids supplying nonlinear, unbalanced and constant-power loads 为非线性、不平衡和恒功率负载供电的交直流混合微电网的双层分布式控制

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2024-10-22 DOI: 10.1016/j.ijepes.2024.110298

Mojtaba Biglarahmadi , Abbas Ketabi , Hamid Reza Baghaee , Josep M. Guerrero

{"title":"Two-layer distributed control of hybrid AC/DC microgrids supplying nonlinear, unbalanced and constant-power loads","authors":"Mojtaba Biglarahmadi , Abbas Ketabi , Hamid Reza Baghaee , Josep M. Guerrero","doi":"10.1016/j.ijepes.2024.110298","DOIUrl":"10.1016/j.ijepes.2024.110298","url":null,"abstract":"<div><div>Nonlinear, imbalanced, and constant power loads pose significant technical and power quality challenges in both AC and DC microgrids. Hybrid AC/DC microgrids further compound these complexities. In response, this paper presents a novel hierarchical control scheme comprising primary and secondary layers for such microgrids. The proposed scheme introduces innovative cooperative voltage and frequency secondary control methods, complementing conventional droop-based primary controllers. This hierarchical structure aims to provide acceptable voltage and frequency regulations, as well as power sharing in both AC and DC sub-grids, mitigating issues arising from various loads. Specifically, the DC sub-grid maintains its stability in the presence of constant power loads, while the AC bus output voltages maintain sinusoidal waveforms. Finally, we conduct digital time-domain simulation studies on a test microgrid system using the MATLAB/Simulink environment to assess the performance of the proposed control strategy. We compare the results with previously reported methods. The results demonstrate that the proposed methods effectively share power with reduced overshoot and faster convergence toward desired values compared to conventional controllers. Simulation analyses validate the superiority and efficacy of the proposed control scheme.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"162 ","pages":"Article 110298"},"PeriodicalIF":5.0,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Triple-branch structure design and parameter optimization for supplementary damping controller of DFIG to suppress angular oscillation and reduce phase-locking error of PLL 用于 DFIG 辅助阻尼控制器的三分支结构设计和参数优化，以抑制角振荡并降低 PLL 锁相误差

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2024-10-22 DOI: 10.1016/j.ijepes.2024.110287

Shenghu Li, Nan Qi

{"title":"Triple-branch structure design and parameter optimization for supplementary damping controller of DFIG to suppress angular oscillation and reduce phase-locking error of PLL","authors":"Shenghu Li, Nan Qi","doi":"10.1016/j.ijepes.2024.110287","DOIUrl":"10.1016/j.ijepes.2024.110287","url":null,"abstract":"<div><div>The supplementary damping controller (SDC) in the doubly fed induction generator (DFIG) is to suppress the angular oscillations among synchronous generators (SGs). Due to the phase-locking error, the coupling between the SDC and the phase-locked loop (PLL) weakens the suppression effect. This paper proposes a novel triple-branch SDC (TB-SDC) and two-stage optimization to reduce the phase locking error and suppress the angular oscillation. The originalities are, (1) An analytical model to describe the coupling between the SDC and the PLL considering the phase locking error is newly proposed. (2) A triple-branch SDC with an additional input from the PLL is newly proposed to suppress the angular oscillation while reducing the phase-locking error. (3) Based on 2-norm of the trajectory sensitivities, two evaluation indices are newly defined to quantify the impact of the TB-SDC parameters on the oscillation and the phase locking error, and select the critical parameters. (4) A two-stage optimization model is proposed to adjust the parameters of the TB-SDC, where the 1st step is to reduce the phase locking error and decide the input signals of the SDC-P and the SDC-Q, and the 2nd step is to improve the suppression effect and reduce the phase locking error. The simulation results verify the impact of the coupling, and validate the effectiveness and adaptability of the TB-SDC and optimization. © 2017 Elsevier Inc. All rights reserved.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"162 ","pages":"Article 110287"},"PeriodicalIF":5.0,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 secure and efficient data aggregation scheme for cloud–edge collaborative smart meters 云边协作智能仪表的安全高效数据聚合方案

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2024-10-21 DOI: 10.1016/j.ijepes.2024.110270

Wenjie Kang , Li Zhang , Zhenzhen Hu , Zhuoqun Xia

{"title":"A secure and efficient data aggregation scheme for cloud–edge collaborative smart meters","authors":"Wenjie Kang , Li Zhang , Zhenzhen Hu , Zhuoqun Xia","doi":"10.1016/j.ijepes.2024.110270","DOIUrl":"10.1016/j.ijepes.2024.110270","url":null,"abstract":"<div><div>Smart meters are part of the Advanced Measurement Infrastructure (AMI) system in the smart grid. It facilitates data transfer between consumers and electricity suppliers (ES). However, the mass deployment of smart meters (SM) brings heavy overhead to grid operation and poses serious privacy threats. To this end, this paper proposes a secure and efficient data aggregation scheme of cloud–edge collaboration smart meters. At first, we standardize the users’ historical electricity load features and use the improved K-Means clustering algorithm to calculate the Euclidean distance between feature vectors to obtain the classification results of users’ load features. On this basis, ES generates relevant parameters to encrypt meter data and protect users’ data privacy based on classification results. The aggregator (Ag) performs the data aggregation, generates the overall signature using the Schnorr aggregation signature method, and sends it to the cloud server (CS). The ES queries the CS to obtain data and parses it to realize the customer billing service. Meanwhile, this paper executes a series of experiments, and the results show that the proposed scheme exhibits significant advantages in privacy protection and system operation efficiency.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"162 ","pages":"Article 110270"},"PeriodicalIF":5.0,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Diagnosis of distribution network fault using multiresolution S-transform and modified convolution neural network 利用多分辨率 S 变换和修正卷积神经网络诊断配电网故障

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2024-10-21 DOI: 10.1016/j.ijepes.2024.110294

Fei Xiao , Mingli Wu , Kejian Song , Tianguang Lu , Qian Ai

{"title":"Diagnosis of distribution network fault using multiresolution S-transform and modified convolution neural network","authors":"Fei Xiao , Mingli Wu , Kejian Song , Tianguang Lu , Qian Ai","doi":"10.1016/j.ijepes.2024.110294","DOIUrl":"10.1016/j.ijepes.2024.110294","url":null,"abstract":"<div><div>This study presents a new modified convolution neural network (MCNN) based on a three-stage fault diagnosis framework. An improved multiresolution S-transform (MST) model is proposed initially to calculate the points of feed line fault initiation and recovery efficiently, considering the various sampling resolutions of feed line fault recording and large amount of fault information. First, the proposed fault detection model is robust even without a detection threshold; it achieves relatively high detection accuracy through adaptive adjustment of Gaussian window width. Second, the preprocessed fault waveforms are converted into time–frequency images. Third, a CNN with a parallel block is proposed as a robust classifier. This method can realize fast convergence by utilizing a new activation function and achieve high accuracy by extracting image features in a wide and short spatial range. Finally, simulation and real measurement data are leveraged in the testing phase to verify the performance of the proposed diagnosis method. The proposed models have great performance on the test database when evaluated using accuracy, recall, precision, and F1-score. Results show that the proposed framework obtains an average accuracy of 99.8 % and 98.3 % for simulation fault cases and real measurement data, respectively. The test results of MCNN are better than 1-D CNN and other well-known classifiers.</div><div>© 2017 Elsevier Inc. All rights reserved.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"162 ","pages":"Article 110294"},"PeriodicalIF":5.0,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142537866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Finite time adaptive resilient control method for distributed energy storage systems considering disturbance effects 考虑干扰效应的分布式储能系统有限时间自适应弹性控制方法

IF 5 2区工程技术

International Journal of Electrical Power & Energy Systems Pub Date : 2024-10-21 DOI: 10.1016/j.ijepes.2024.110315

Jian Sun , Zewen Li , Jianqi Li , Jianquan Lu

{"title":"Finite time adaptive resilient control method for distributed energy storage systems considering disturbance effects","authors":"Jian Sun , Zewen Li , Jianqi Li , Jianquan Lu","doi":"10.1016/j.ijepes.2024.110315","DOIUrl":"10.1016/j.ijepes.2024.110315","url":null,"abstract":"<div><div>The large-scale application of measurement devices, programmable controllers, and power electronic devices increases the likelihood of distributed energy storage systems suffering from various disturbances, thus affecting the stable operation of the system. In this paper, an adaptive finite time fast resilient control strategy is proposed for the unknown transmission disturbance in the control channel of distributed energy storage system. Firstly, the adverse effects of sensor and actuator disturbances on conventional consensus-based secondary control strategies are quantitatively analyzed. Secondly, an resilient control protocol with adaptive compensation mechanism based on terminal sliding mode is proposed, and the suppression mechanism of the controller to the unknown disturbance of the sensor and the actuator is analyzed, and the finite time convergence of the proposed distributed resilient secondary control strategy is proved theoretically. Experimental results show that the proposed control strategy is correct and effective.</div></div>","PeriodicalId":50326,"journal":{"name":"International Journal of Electrical Power & Energy Systems","volume":"162 ","pages":"Article 110315"},"PeriodicalIF":5.0,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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