Article
Engineering, Electrical & Electronic
Jianwen Zhao, Yubing Zhang, Yibo Yuan, Yang Li
Summary: This paper proposes a transient-state protection method that uses cosine similarity of time domain voltage traveling wave to identify microgrid line faults. By deriving the time domain expression of the transient voltage traveling wave at both ends of the microgrid line, the method achieves fault discrimination by calculating the cosine similarity coefficient between the time domain voltage waveforms of the forward and backward waves. The simulation results show the feasibility and effectiveness of this method, irrespective of microgrid operation state, fault location, and fault type.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2023)
Article
Engineering, Electrical & Electronic
Di Liu, Adam Dysko, Qiteng Hong, Dimitrios Tzelepis, Campbell D. Booth
Summary: This study proposes a novel protection scheme based on transient wavelet energy for detecting faults and locating faulted feeders in microgrids. Compared to existing protection schemes, the proposed scheme is highly immune to changes in system fault level, fault types and positions, microgrid operating status, and inverter control strategies, while also requiring lower sampling frequency.
IEEE TRANSACTIONS ON SMART GRID
(2022)
Article
Engineering, Electrical & Electronic
Xiaojie Luo, Luliang Zhang, Haiting Shan, Tianyao Ji
Summary: A novel traveling wave fault location scheme suitable for multi-branch distribution network is proposed in this paper. The scheme utilizes a method based on multiscale mathematical morphology to extract the arrival time of fault-generated traveling waves and employs proper criteria derived from multi-end traveling wave method to identify the faulty line section and filter the valid time. A velocity-independent formula is presented for accurate fault location. Extensive simulation tests verify the feasibility and independence of the proposed scheme.
ELECTRIC POWER SYSTEMS RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Dmitrii A. Etingov, Peng Zhang, Zefan Tang, Yifan Zhou
Summary: This paper proposes a traveling wave protection approach for microgrids using a wavelet-driven deep neural network named WaveletKernelNet (WKN), which provides enhanced sensitivity, higher selectivity, and better identification of various faults in microgrids.
ELECTRIC POWER SYSTEMS RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Adeyemi Charles Adewole, Athula D. Rajapakse, Dean Ouellette, Paul Forsyth
Summary: This paper proposes three new protection algorithms for active distribution networks with high penetration of inverter-based DERs, and validates their effectiveness and reliability through Real-Time Digital Simulator testing, demonstrating their capability to correctly detect and timely isolate faults.
ELECTRIC POWER SYSTEMS RESEARCH
(2022)
Article
Computer Science, Information Systems
Miguel Jimenez-Aparicio, Felipe Wilches-Bernal, Matthew J. Reno
Summary: This work presents a signal-based fault location method that combines both time and frequency-domain features. The method utilizes Traveling Wave (TW) detection and analysis, extracting time-domain features using Mathematical Morphology and frequency-domain features using the Stationary Wavelet Transform. The proposed method demonstrates improved accuracy compared to other signal-based methods, with a low fault location estimation error rate across the entire feeder length.
Article
Engineering, Electrical & Electronic
Marija Culjak, Hrvoje Pandzic, Juraj Havelka
Summary: The paper proposes a fast fault detection method for radial DC microgrids that utilizes mathematical morphology (MM) denoising filters and local measurements. The method avoids communication delays while maintaining low cost and computational burden. It includes five different MM-based denoising filters and analyzes the influence of selecting an appropriate structuring element (SE). The proposed method enables reliable, accurate, and fast detection of both pole-to-pole (PP) and pole-to-ground (PG) faults.
IEEE TRANSACTIONS ON SMART GRID
(2023)
Article
Engineering, Electrical & Electronic
Yuanfeng Zhou, Yanjun Feng, Nikolay Shatalov, Risha Na, Z. John Shen
Summary: This article proposes a new architecture for a direct current hybrid circuit breaker (HCB) that utilizes a switching-mode transient commutation current injector (TCCI) circuit instead of the traditional load commutation switch, providing zero power loss and high efficiency current commutation. The new HCB architecture can be applied in medium voltage direct current (MVDC) and high voltage direct current (HVDC) applications.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Md Asif Uddin Khan, Qiteng Hong, Agusti Egea-Alvarez, Adam Dysko, Campbell Booth
Summary: This paper presents a novel active protection strategy for inverter dominated islanded microgrids, which coordinates protection actions with the inverter control strategy. The proposed scheme involves injecting specific harmonic components into the microgrid during a fault and using relays to detect and analyze these components to identify the faulted section and take appropriate isolating actions. The performance of the scheme is verified through simulations and real-time case studies.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2022)
Article
Engineering, Electrical & Electronic
Moslem Salehi, Ali Akbar Motie Birjandi, Xinzhou Dong
Summary: This paper introduces a new minimal placement strategy for fault detectors on the transmission network, with offline and online algorithms. The offline algorithm is used to determine detector quantity and location based on network topology, while the online algorithm identifies fault occurrence time and location using initial traveling wave-front arrival times. The use of morphological edge detection filter aids in extracting traveling waves from post-fault signals for the online algorithm. Extensive simulation studies have been conducted to assess the proposed method's accuracy and reliability.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2021)
Article
Engineering, Electrical & Electronic
Yunqi Zhang, Congbo Wang, Yue Yu
Summary: This paper proposes a pilot protection principle based on the similarity of time-frequency matrix of the initial current traveling wave (ICTW) for voltage source converter based high voltage DC (VSC-HVDC) grids. The fault characteristics of the double-ended ICTWs in the VSC-HVDC grid are analyzed, and it is concluded that the frequency-domain similarities of the double-ended ICTWs under internal faults are higher than external faults within a specific time window. The time-frequency characteristics of the double-ended ICTWs are analyzed using the S transform and the similarity calculation formula is constructed based on the feature matrices, allowing accurate discrimination of DC line faults.
ELECTRIC POWER SYSTEMS RESEARCH
(2023)
Article
Energy & Fuels
Ann Mary Joshua, K. Panduranga Vittal
Summary: A differential protection scheme based on fundamental frequency superimposed current phasors is proposed for microgrid feeders in this paper. The scheme uses dq components instead of conventional Fourier algorithms to extract phasors. Simulations in MATLAB/SIMULINK software are carried out to test the performance of the proposed method for different fault scenarios. The results confirm that internal faults are detected in a few milliseconds, while the scheme remains insensitive to external faults with CT saturation and other system disturbances. The proposed scheme is unaffected by the microgrid mode of operation, direction of power flow, and DG type.
Article
Engineering, Electrical & Electronic
Iman Mousaviyan, Seyyed Ghodratollah Seifossadat, Mohsen Saniei
Summary: This paper introduces a new and fast method for fault detection, fault classification, and fault phase selection based on the first group of current traveling waves in double circuit transmission lines. The proposed algorithm achieves quick fault classification and phase selection using wavelet transform, while utilizing zero components of traveling waves for fault type classification.
ELECTRIC POWER SYSTEMS RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Haneen Bawayan, Mohamed Younis
Summary: This paper proposes an adaptive protection scheme for inverter-based distributed generation (IBDG) in islanded mode. It considers renewable energy sources (RES), Battery Energy Storage System (BESS), and hybrid units in the microgrid (MG). The scheme ensures reliable output power through internal cooperation between RES and BESS and fault current path determination based on power flow analysis. Simulation results on the IEEE 33 bus system validate the effectiveness and superiority of the proposed scheme over competing approaches.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2023)
Article
Environmental Sciences
H. A. Basha
Summary: Recession analysis is a powerful tool for determining the hydraulic characteristics of a riparian aquifer. This study proposes a nonlinear solution of the one-dimensional Boussinesq equation using the traveling wave approximation, which better represents field conditions. The proposed methodology outperforms the standard method of recession analysis in estimating hydraulic parameters, especially when daily discharge values with observational errors are used.
WATER RESOURCES RESEARCH
(2023)
Editorial Material
Energy & Fuels
Adam Dysko, Dimitrios Tzelepis
Article
Automation & Control Systems
Chao Deng, Changyun Wen, Wei Wang, Xinyao Li, Dong Yue
Summary: This article investigates the consensus problem for high-order nonlinear multi-agent systems (MASs) with an uncertain leader under event-triggered communication. It introduces distributed intermediate parameter estimators based on event-triggered communication mechanism to estimate the unknown parameters of the uncertain leader. To ensure the existence of high-order derivatives, the estimators are modified by using the Hermite interpolation method. Moreover, novel high-order filters are proposed to generate local reference signals and ensure the existence of high-order derivatives of the filter states. A backstepping-based decentralized adaptive controller is developed based on the developed filters, and it is proved that consensus errors are asymptotically convergent with the developed method. Simulation examples are provided to demonstrate the effectiveness of the proposed method.
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
(2023)
Article
Engineering, Electrical & Electronic
J. Thomas, R. Telford, P. J. Norman, G. M. Burt
Summary: The move towards More-Electric Aircraft and Engine systems has raised the challenge of safe management of arc faults in Direct Current (DC) power distribution. This paper proposes a new real-time arc fault detection methodology, based on time-frequency domain features and a feed-forward Artificial Neural Network (ANN), to address this challenge. Simulation-based case studies demonstrate the high accuracy and generalization capability of the proposed system.
IET ELECTRICAL SYSTEMS IN TRANSPORTATION
(2022)
Article
Engineering, Electrical & Electronic
Xinyao Li, Changyun Wen, Xiaolei Li, Chao Deng
Summary: This paper addresses the stabilization problem of a general class of linear continuous-time fractional systems using the sampled-data control method. By considering the infinite memory and hereditary characteristics of fractional-order calculus, a sampled-data controller is proposed to ensure the asymptotic stability of the resulting closed-loop system.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2022)
Article
Automation & Control Systems
Xiaolei Li, Jinsong He, Xinyao Li, Changyun Wen
Summary: This paper proposes a resilient secondary control scheme to solve the voltage and frequency restoration problem caused by irregular time delays in an AC microgrid. Sufficient conditions are established using algebraic gains to ensure system stability and achieve asymptotic restoration. Simulation and experimental studies demonstrate the effectiveness of the proposed control scheme in practical applications.
IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Eleni Tsotsopoulou, Xenofon Karagiannis, Theofilos Papadopoulos, Andreas Chrysochos, Adam Dysko, Qiteng Hong, Dimitrios Tzelepis
Summary: This paper proposes a novel data-driven fault location scheme for fault localization in power grids with Superconducting Cables (SCs) and inverter-connected generation. The algorithm utilizes the transformation of time domain fault current and voltage signatures to estimate the fault position along SCs using a Convolutional Neural Network (CNN). The algorithm has been tested and proven to provide precise fault localization for various fault scenarios, and its robustness has been verified against different influencing factors. The effectiveness of the CNN-based algorithm has also been compared with other data-driven algorithms, highlighting its advantages.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2023)
Article
Computer Science, Information Systems
Jiaxuan Han, Qiteng Hong, Mazheruddin H. Syed, Md Asif Uddin Khan, Guangya Yang, Graeme Burt, Campbell Booth
Summary: This article presents a novel approach using cloud-hosted and edge-hosted digital twins of Distributed Energy Resources (DERs) for coordinated control. By addressing the significant differences in DERs' capability and characteristics, the proposed approach achieves overall coordination among DERs without heavy reliance on real-time communications. Real-time simulation tests validate that the proposed DT-based coordinated control significantly improves the aggregated response of DERs, offering effective support to the grid during contingency events.
IEEE TRANSACTIONS ON CLOUD COMPUTING
(2023)
Article
Engineering, Electrical & Electronic
Qiyang Zhang, Patrick Norman, Graeme Burt
Summary: In order to meet the requirements of future More-Electric Aircraft, lightweight and resilient electrical power architectures are needed for the More-Electric Engine (MEE). This article proposes key design rules for the formation of the first generic baseline MEE electrical power system architecture concept, based on comprehensive design analyses and anticipated operational modes.
IET ELECTRICAL SYSTEMS IN TRANSPORTATION
(2023)
Article
Energy & Fuels
Angelos Patsidis, Adam Dysko, Campbell Booth, Anastasios Oulis Rousis, Polyxeni Kalliga, Dimitrios Tzelepis
Summary: This study presents a scalable and flexible architecture for obtaining data-driven insights from microgrids, showcasing the potential for significant cost reduction through real-time optimization and control of microgrid assets. This work contributes to advancing microgrid design, operation, and adoption by addressing real-world applicability and extraction of case-specific insights.
Article
Automation & Control Systems
Xinyao Li, Changyun Wen, Xiaolei Li, Jinsong He
Summary: This article investigates the adaptive fractional-order backstepping control problem for high-order integer-order systems with uncertainties and unknown external disturbance. Fractional-order calculus is integrated into the conventional backstepping controller design procedure to improve control performance. Theoretical proof based on the Lyapunov stability theorem is provided to ensure the global stability of the closed-loop system. Numerical simulation and experimental results demonstrate the effectiveness of the proposed adaptive fractional-order backstepping control scheme.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Zhiwang Feng, Rafael Pena-Alzola, Mazheruddin H. Syed, Patrick J. Norman, Graeme M. Burt
Summary: The stability and accuracy of power hardware-in-the-loop (PHIL) setups are affected and degraded by the dynamics and nonideal characteristics of power interfaces. A compensation scheme using a Smith predictor compensator is proposed to address the impact of time delay on PHIL stability. An online system impedance identification technique is also utilized to enhance the robustness of the compensator and adapt to impedance variation. Analytical assessment, simulation results, and experimental validation demonstrate the effectiveness of the proposed compensation scheme in enabling robust and stable testing of novel power technologies.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Eleni Tsotsopoulou, Xenofon Karagiannis, Theofilos Papadopoulos, Andreas Chrysochos, Adam Dysko, Dimitrios Tzelepis
Summary: This paper presents a novel data-driven fault detection and classification scheme for DC faults in multi-terminal HVDC transmission system. The proposed scheme utilizes local current and voltage measurements to detect and classify all types of faults on the DC cables and buses. The performance of the scheme has been assessed through simulation analysis and real-time software testing, demonstrating its effectiveness and robustness.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2023)
Article
Mathematics, Interdisciplinary Applications
Ying Zou, Xinyao Li, Chao Deng, Xiaowen Wu
Summary: This article considers the security control problem of discrete-time fractional-order networked systems under denial-of-service (DoS) attacks. A practically applicable finite-dimensional control strategy is developed for fractional-order systems with nonlocal characteristics. The Lyapunov method is employed to theoretically prove the global input-to-state stability (ISS) of the closed-loop fractional system under the proposed controller, even in the presence of DoS attacks. Finally, the numerical example demonstrates the effectiveness of the designed control method.
FRACTAL AND FRACTIONAL
(2023)
Proceedings Paper
Energy & Fuels
Abdulrahman Babagana, Taimur Zaman, Yljon Seferi, Mazheruddin Syed, Graeme Burt
Summary: This paper investigates and compares the performances of existing non-communication based load shedding schemes in a direct current microgrid to protect the integrity of the microgrid under a large disturbance. It finds that combined load shedding scheme can resolve voltage sags and over-shedding of load, while adaptive schemes minimize voltage drop duration and magnitude by utilizing ROCOV.
2022 57TH INTERNATIONAL UNIVERSITIES POWER ENGINEERING CONFERENCE (UPEC 2022): BIG DATA AND SMART GRIDS
(2022)
Proceedings Paper
Engineering, Aerospace
Catherine E. Jones, Kieran Millar, Kenny Fong, Rafael Pena Alzola, Patrick Norman, Graeme Burt
Summary: The electrification of power and propulsion systems on aircraft is crucial for decarbonization, but designing electrical power systems poses challenges. This paper presents a new design methodology that takes into account the interactions between electrical systems and other systems.
2022 IEEE/AIAA TRANSPORTATION ELECTRIFICATION CONFERENCE AND ELECTRIC AIRCRAFT TECHNOLOGIES SYMPOSIUM (ITEC+EATS 2022)
(2022)
