Article
Engineering, Electrical & Electronic
Nassim Shahbazi, Sajad Bagheri, Gevork B. Gharehpetian
Summary: This article focuses on the study of cross-country faults and proposes a protection algorithm that can efficiently detect and distinguish cross-country faults from other faults and events. By considering external electrical faults and internal mechanical faults as cross-country faults, the algorithm utilizes hyperbolic S-transform for feature extraction and calculates various S-transform indices for discrimination.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Engineering, Electrical & Electronic
Xiangning Lin, Xiao Ma, Zixuan Wang, Quan Sui, Zhengtian Li, Yuqing Ye, Yuqi Wu, Shankang Cao, Guangyuan Wang
Summary: The paper focuses on overcoming deficiencies of traditional over-current protection in active distribution networks using current amplitude differential protection. Specifically, a novel protection scheme is proposed to identify internal and external faults while avoiding the risk of maloperation in various external fault scenarios. Simulation results show sensitive fault identification capabilities.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2021)
Article
Computer Science, Information Systems
Abhishek Gupta, Ramesh Kumar Pachar, Om Prakash Mahela, Baseem Khan
Summary: This paper proposes a protection scheme for utility networks with high levels of renewable energy generation using a fusion of Hilbert transform, Stockwell transform, and Alienation coefficient. The scheme utilizes a hybrid fault detection index that extracts features from current and voltage signals to detect fault events. The performance of the scheme is validated using test systems and practical utility networks, with a focus on detecting faults under high noise levels. Results show that the proposed scheme outperforms existing alienation coefficient-based approaches.
Article
Engineering, Electrical & Electronic
M. N. O. Aires, R. P. Medeiros, F. B. Costa, K. M. Silva, J. J. Chavez, M. Popov
Summary: This study introduces a restricted earth fault protection based on the wavelet transform for detecting ground faults near the transformer neutral point, achieving a success rate of 100% and outperforming conventional methods in efficiency and speed.
ELECTRIC POWER SYSTEMS RESEARCH
(2021)
Article
Energy & Fuels
Bhaskar Patnaik, Manohar Mishra, Ramesh C. Bansal, Ranjan K. Jena
Summary: This study introduces a novel approach for microgrid fault detection and classification using feature extraction and machine learning. By combining MODWT and XGBoost as an intelligent MPS, the proposed method is validated on standard test models under different conditions, demonstrating its effectiveness and robustness.
Article
Engineering, Mechanical
Yukitaka Murakami, Toshio Takagi, Kentaro Wada, Hisao Matsunaga
Summary: This paper elucidates the essential structure of the S-N curve based on fatigue life and material limit prediction methods containing defects, and discusses the extended application of this method to step loading and variable amplitude loading. The applicability of Miner's rule is also discussed from the perspective of continuous decrease in fatigue limit with number of stress cycles and crack growth.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Engineering, Electrical & Electronic
Rodrigo Prado Medeiros, Flavio Bezerra Costa, Kleber Melo Silva, Jose de Jesus Chavez Muro, Jose Raimundo Lima Junior, Marjan Popov
Summary: In this paper, a novel time-domain power transformer differential protection method based on Clarke and wavelet transforms is proposed. The performance validation and implementation in a real-time digital simulator demonstrate the efficiency and feasibility of the method.
IEEE TRANSACTIONS ON POWER DELIVERY
(2022)
Article
Energy & Fuels
Haitao Song, Li Yang, Shaoyu Chen, Wentao Huang, Nengling Tai
Summary: The paper proposes a DC feeder protection method using transient high-frequency currents to identify fault direction and fault feeder, and introduces an amplitude ratio coefficient to detect fault pole, achieving fast detection and clearance of different faults on feeders before the failure of inverter-interfaced generators and loads to ensure reliable and safe operation of the non-fault zone. The model of a DC micro-energy system is established in MATLAB/Simulink, and the efficiency of this method is verified through detailed simulations.
FRONTIERS IN ENERGY RESEARCH
(2021)
Article
Multidisciplinary Sciences
Lei Zhang, Mingxiang Wang, Jianxin Xiu
Summary: The evolution of smart grids enhances the sustainability and efficiency of traditional power grids, but protecting users' privacy during data collection and control remains a challenge. This paper addresses the issue of differential noise deviation on aggregated data utility by improving the prediction method and providing a fault-tolerant differential privacy protection scheme.
Article
Engineering, Mechanical
Bernd M. Schoenbauer, Michael Fitzka, Ulrike Karr, Herwig Mayer
Summary: The study found that 17-4PH stainless steel exhibited similar critical stress amplitudes for surface and internal failure under constant amplitude (CA) and variable amplitude (VA) loading in high cycle fatigue conditions. For VA loading, failure occurred at Miner damage sums ranging from 0.1 to 0.9 (surface failure) and 0.2 to 2.2 (internal failure). It is acceptable to omit stress amplitudes less than 60% of the maximum amplitude for VA studies in the very high cycle fatigue regime.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Energy & Fuels
Hao Zhang, Zhongqing Li, Sumei Liu, Danfeng Wang, Xuewei Dou
Summary: With the increasing capacity of grid-connected renewable energy power plants, the fault current characteristics change significantly and may lead to mal-operation of the current differential protection. This study deduces an analytical expression for evaluating the adaptability of current differential protection to analyze the influence of different rated capacity of inverter-interfaced renewable energy power plants on the ratio of operate to restraint current.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Lucas D. Simoes, Hagi J. D. Costa, Matheus N. O. Aires, Rodrigo P. Medeiros, Flavio B. Costa, Arturo S. Bretas
Summary: This paper presents a power transformer differential protection scheme based on SVM and RTBSWT, achieving good performance by considering various events in synthetic data. The proposed SVM model is simple to use and suitable for practical applications.
ELECTRIC POWER SYSTEMS RESEARCH
(2021)
Article
Engineering, Electrical & Electronic
Amir Hossein Nazari Tajani, Ali Bamshad, Navid Ghaffarzadeh
Summary: An innovative wavelet-based differential technique is proposed for AC microgrids protection in this research, which can overcome various challenges caused by distributed energy resources near the demand side. By calculating the differential current within a specified protection zone and utilizing the Discrete Wavelet Transform (DWT) to obtain the approximate and detail coefficients of the network's differential current, the proposed scheme can detect and classify faults within 6 milliseconds. It is also independent of fault impedances, fault location, and grid operating situations. The effectiveness, speed, and accuracy of the proposed scheme are demonstrated through simulations on different fault scenarios in PSCAD/EMTDC software.
ELECTRIC POWER SYSTEMS RESEARCH
(2023)
Article
Astronomy & Astrophysics
J. Y. Lu, Y. T. Xiong, K. Zhao, M. Wang, J. Y. Li, G. S. Peng, M. Sun
Summary: In this paper, a novel bimodal model is proposed to predict a complete sunspot cycle based on comprehensive precursor information. The model combines the implicit and geometric information of the solar cycle with the traditional precursor method and employs a multivariate linear approach, achieving a good performance in the prediction.
ASTROPHYSICAL JOURNAL
(2022)
Article
Computer Science, Interdisciplinary Applications
Tianwei Zhang, Yongkun Li
Summary: A new technique is proposed to investigate the existence, uniqueness and global asymptotical stability of S-asymptotically periodic solution for a class of semilinear Caputo fractional functional differential equations. The methods used in this paper could be applied to the study of other fractional differential systems in the areas of science and engineering. Resulting in improved and extended research findings.
MATHEMATICS AND COMPUTERS IN SIMULATION
(2022)
Article
Engineering, Electrical & Electronic
Saeid Hasheminejad, Seyed Ghodratollah Seifossadat, Morteza Razaz, Mahmood Joorabian
ELECTRIC POWER SYSTEMS RESEARCH
(2016)
Article
Engineering, Electrical & Electronic
Saeid Hasheminejad, Seyed Ghodratollah Seifossadat, Morteza Razaz, Mahmood Joorabian
IET GENERATION TRANSMISSION & DISTRIBUTION
(2016)
Article
Engineering, Electrical & Electronic
Saeid Hasheminejad, Seyed Ghodratollah Seifossadat, Mahmood Joorabian
IET GENERATION TRANSMISSION & DISTRIBUTION
(2017)
Article
Engineering, Electrical & Electronic
S. Hasheminejad, S. Esmaeili, S. Jazebi
ELECTRIC POWER COMPONENTS AND SYSTEMS
(2012)
Article
Engineering, Electrical & Electronic
S. Hasheminejad, S. Esmaeili
INTERNATIONAL TRANSACTIONS ON ELECTRICAL ENERGY SYSTEMS
(2014)
Article
Engineering, Electrical & Electronic
Mohsen Tavakoli Allahabadi, Saeid Hasheminejad
Summary: A new ultra-high-speed algorithm for fault type classification and identification based on traveling waves is proposed in this paper, utilizing the Karen-Bauer matrix for phase-to-modal transformation and wavelet transform to extract traveling waves. The algorithm is designed by comparing the first traveling wave amplitude of different modal components, making it easy to understand and implement for relay programming.
ELECTRIC POWER SYSTEMS RESEARCH
(2021)
Article
Engineering, Electrical & Electronic
S. Hasheminejad, S. Esmaeili
INTERNATIONAL REVIEW OF ELECTRICAL ENGINEERING-IREE
(2011)
Article
Engineering, Electrical & Electronic
Ehsan Rahmkhoda, Jawad Faiz, Moein Abedini
Summary: This paper investigates the failures and errors of loss-of-excitation (LOE) protection and proposes an intelligent method combined with a learning vector quantization (LVQ) neural network. The simulation results demonstrate that the proposed algorithm can detect LOE conditions quickly and prevent stresses applied to the machine and power system.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Andre M. Garcia, Leonardo H. Macedo, Ruben Romero
Summary: This article presents a specialized scatter search algorithm to solve the optimal transmission switching problem considering voltage control, and its efficiency is validated through tests.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Adel F. Alrasheedi, Khalid A. Alnowibet, Ahmad M. Alshamrani
Summary: This paper studies the bidding strategy problem of microgrid in a day-ahead electricity market. The DA electricity prices, demand, and uncertainties are modeled using different scenarios and robust optimization. A smart predict-and-optimize methodology is proposed, where a cost-oriented prediction model is used to replace accuracy-oriented methods. The trilevel mathematical programming approach is utilized to construct a cost-oriented model and solve the problem.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Depin Lv, Qiusheng Yu, Xiaoyong Wang, Yulian Bo, Yongjing Wei, Lei Liu, Pu Zhang, Yan Zhang, Wensheng Zhang
Summary: This study proposes a method based on the MHA-CNN framework to monitor the operation status of the smart grid and power communication network coupling. The method utilizes HHT to extract features from operational data and employs MHA to extract key feature information from fault data, achieving faster fault detection speed and higher detection probability.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Tao Zhang, Zhiguo Hao, Hongyue Ma, Songhao Yang, Chongtao Li
Summary: This paper introduces a dominant mode identification (DMI) method to assess the stability of grey-box grid-tied converters. The method analyzes the critical eigenvalues and can be applied to different grid connection scenarios.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Aamir Nawaz, Hongtao Wang, Huiting Yang, Hammad Armghan, Jiechao Gao
Summary: This paper presents a risk constrained probabilistic problem framework for addressing the challenges of stochastic dispatching due to contingencies and the integration of renewable sources. By utilizing probabilistic analytical target cascading, polynomial chaos expansion, and benders decomposition algorithm, the proposed method reduces computational burden and improves efficiency.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Thongchart Kerdphol, Issarachai Ngamroo, Tossaporn Surinkaew
Summary: This paper introduces an enhanced robust H-infinity technique to improve the regulation performance and cyber resiliency of secondary frequency control in a microgrid. The study shows that cyber-attacks affect different elements of secondary frequency control in the microgrid depending on the type of attack used.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Sambeet Mishra, Praveen Prakash Singh, Ivar Kiitam, Muhammad Shafiq, Ivo Palu, Chiara Bordin
Summary: This study aims to analyze partial discharge events in high-voltage cables and extract patterns and trends. The results indicate a positive correlation between the number of PD events and the increase in voltage levels, with negative PD peaks being more frequent at lower stress levels.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Cleberton Reiz, Jonatas B. Leite, Clara S. Gouveia, Mohammad Sadegh Javadi
Summary: This research proposes a bilevel method to simultaneously solve the allocation and coordination problems in microgrid protection, considering local devices. The results show that solving these problems simultaneously can save costs and select the optimal solution.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Rasha Elazab, M. Ser-Alkhatm, Maged A. Abu Adma, K. M. Abdel-Latif
Summary: This paper proposes a two-layer methodology for the allocation and sizing of SVCs in radial distribution systems. The Power Loss Index (PLI) is used to choose the best candidate buses for allocating SVCs, and a two-stage stochastic programming algorithm is proposed to solve the sizing problem. The advantages of combining SVCs and the PV inverter's reactive power provision ability are also analyzed.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Samreen Javaid, Dongyu Li, Abhisek Ukil
Summary: This paper introduces a new algorithm based on high pass filter for traveling wave fault location, which can differentiate the peak value of the traveling wave more easily by removing oscillation in the signal. The algorithm is tested on a DC simulation model and executed in MATLAB environment, achieving high accuracy in fault location results. Compared with traditional methods, this algorithm shows higher accuracy and faster response.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Enzhe Wang, Xiangrong Chen, Hanshan Zhu, Kai Yin, Muhammad Awais, Ashish Paramane
Summary: This paper aims to reduce the power loss of tunnel cable systems by using different grounding and loss reduction methods. The case study of the submarine tunnel power cable project in Ningbo-Zhoushan, China is considered. The nodal admittance matrices of the cable are established using the telegraph equation, and the cascading algorithm is used to analyze the induced voltage and circulating current in the cable sheath, taking into account the presence of grounding node. The study finds that coordinating the amplitude and phase angle of series impedance can reduce the power loss of the cable system.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Ziwei Ma, Jasronita Jasni, Mohd Zainal Abidin Ab Kadir, Norhafiz Azis
Summary: A numerical model was developed to analyze lightning attachment on UHV-AC double-circuit transmission lines. Simulation results showed that upward leaders simultaneously occurred on the ground wire and the upper-phase conductor when the phase conductors were energized. A new expression for calculating the striking distance on the ground wire was proposed based on the simulation results. Additionally, high voltage, phase angle, and terrain slope were found to increase the surface electric field of the upper-phase conductor.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Kunal Kumar, Susmita Kar
Summary: This paper presents an efficient protection scheme utilizing the rate of change parameter to detect both shunt faults and high impedance faults. By comparing with the existing scheme and testing on the IEEE 13 Bus test system, the effectiveness of the proposed scheme is demonstrated.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Cheng Che, Bangbang He, Zhixuan Gao, Qiwei Lu, Yang Chen, Zhifeng Wang, Jinghan Guo, Yanwen Wang
Summary: A low-cost hybrid railway power conditioner (HRPC) technology scheme is proposed in this paper to effectively compensate negative sequence current (NSC) of the V/v traction system and reduce the capacity and cost of the railway power conditioner (RPC). The proposed HRPC combines an RPC with a modular multilevel converter structure (MMC-RPC) and a railway static var compensator (RSVC) and considers regenerative braking energy in the compensation process.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
