Article
Engineering, Electrical & Electronic
Bhatraj Anudeep, Paresh Kumar Nayak
Summary: This study proposes a selective phase tripping scheme for fault-resilient microgrids, which uses differential power calculation to identify faulted phases. The effectiveness of the scheme is tested and compared with other methods, and the results show that it can achieve selective tripping of faulted phases quickly and securely.
JOURNAL OF MODERN POWER SYSTEMS AND CLEAN ENERGY
(2022)
Article
Engineering, Electrical & Electronic
Salauddin Ansari, Om Hari Gupta, Shailendra Kumar
Summary: This article presents a differential positive sequence apparent power (DPSAP)-based protection scheme for fault detection and identification in a microgrid. The scheme calculates DPSAP using measurements from both ends of the protected feeder and is examined under various scenarios and compared with other schemes. The proposed scheme is validated using a hardware-in-loop experimental system and found to be a superior protection strategy for a microgrid.
ELECTRICAL ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Hadi Bisheh, Bahador Fani, Ghazanfar Shahgholian
Summary: The proposed adaptive algorithm for protection coordination of over-current relays allows maintaining relay coordination in the presence of distributed generation without restricting the output power of DGs. Simulation results demonstrate that the algorithm can keep the coordination time interval of the main and backup relays in an acceptable range for various levels of DG penetration.
INTERNATIONAL TRANSACTIONS ON ELECTRICAL ENERGY SYSTEMS
(2021)
Article
Energy & Fuels
Saad Alzahrani, Khalil Sinjari, Joydeep Mitra
Summary: This paper proposes an integrated control and protection framework based on state observer and fault current limiter for stability and protection in islanded microgrids. The scheme utilizes controlled switches and fault current limiters to provide rapid switching and improve system reliability.
SUSTAINABLE ENERGY GRIDS & NETWORKS
(2022)
Article
Engineering, Electrical & Electronic
Chunpeng Li, Puran Rakhra, Patrick J. Norman, Graeme M. Burt, Paul Clarkson
Summary: This article proposes a novel solution to address protection instability caused by time synchronization error in high-speed differential protection schemes for DC microgrids. The proposed multisample differential (MSD) scheme aims to ensure the stability of high-speed differential protection schemes for external faults while maintaining sensitivity to internal faults.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Review
Energy & Fuels
Swetalina Sarangi, Binod Kumar Sahu, Pravat Kumar Rout
Summary: This paper highlights the importance and challenges of protection in DC microgrids, as well as some loopholes in current research. By systematically and chronologically reviewing DC microgrid systems, some reliable improvements have been suggested.
INTERNATIONAL JOURNAL OF ENERGY 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
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, Multidisciplinary
Muhammad Yousaf, Amin Jalilian, Kashem M. Muttaqi, Danny Sutanto
Summary: This article focuses on the design of a protection coordination strategy based on the dual-setting directional recloser (DSDR) for the effective implementation of a fuse-saving scheme in distribution networks (DNs) equipped with distributed generators. The proposed strategy provides a flexible coordination range and more accurate protection settings, and reduces the number of protective devices for economical design. The results show improved network reliability by significantly reducing temporary and sustained interruptions.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Vassilis C. Nikolaidis, George Michaloudis, Aristotelis M. Tsimtsios, Dimitrios Tzelepis, Campbell D. Booth
Summary: This paper introduces a current differential protection scheme for medium voltage active distribution systems, which ensures coordination between protection zones using multiple time-delayed and instantaneous differential elements, thereby enhancing the overall performance of the scheme.
IEEE TRANSACTIONS ON POWER DELIVERY
(2022)
Article
Energy & Fuels
Seyyed Mohammad Nobakhti, Abbas Ketabi, Miadreza Shafie-khah
Summary: This article proposes an impedance-based fault detection scheme and a backup protection scheme based on conductance variations for protecting microgrid systems. These schemes demonstrate robustness against uncertainties and network reconfigurations, with advantages of low sampling rate and minimum data exchange.
Article
Computer Science, Information Systems
Smrutirekha Samal, Subhransu Ranjan Samantaray, Nikhil Kumar Sharma
Summary: This article presents an enhanced differential relaying scheme based on a data-mining model for fault detection and classification in microgrids. The scheme utilizes three-phase current signals and computes the differential current phasor, including distributed generation, in the fault model. Deep neural network models are built using differential current phasor datasets with wide variations in fault and operating conditions, and are validated on MATLAB/SIMULINK and Typhoon hardware-in-loop platforms. The results show high accuracy and speed in detecting and classifying faults, indicating the potential of this scheme for reliable protection in microgrids.
IEEE SYSTEMS JOURNAL
(2023)
Article
Energy & Fuels
Mohammad-Reza Hosseinkhani Rezaeieh, Tohid Ghanizadeh Bolandi, Sajjad Miralizadeh Jalalat
Summary: In the last decades, the penetration rates of microgrids (MG) and distributed generations (DGs) have increased exponentially. Designing a reliable protection scheme for AC microgrids (AC-MGs) is challenging due to various types of DGs, operational mode changes, islanding, load variations, and DG penetration rate fluctuations. This paper proposes an adaptive resilient protection scheme that uses synchronous current and voltage measurements from micro phasor measurement units (& mu;PMU) to detect faults based on differential phase angles of superimposed complex power (DPASCP). The scheme can accurately detect different types of faults in both grid-connected and islanded modes. Evaluation on IEEE 33-bus and 15-bus test networks demonstrates the efficacy of the proposed scheme.
SUSTAINABLE ENERGY GRIDS & NETWORKS
(2023)
Article
Engineering, Electrical & Electronic
Pooja Chauhan, C. P. Gupta, Manoj Tripathy
Summary: In this paper, a new differential protection scheme based on the sensitivity of the relay is proposed for fault detection and location estimation in DC microgrid with different renewable energy sources. The scheme calculates the sensitivity factor of each relay by analyzing the magnitude of currents flowing through the cables. Fault detection is done by comparing the sensitivity factor of each relay with a predefined threshold value, and fault location is determined by measuring voltage and current at both ends of the faulty cable. Simulation results show the effectiveness and reliability of the proposed scheme.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2023)
Article
Green & Sustainable Science & Technology
Feras Alasali, Naser El-Naily, Abdelaziz Salah Saidi, Awni Itradat, William Holderbaum, Faisal A. Mohamed
Summary: The high penetration of DGs has raised concerns about optimal overcurrent coordination for power protection. A new optimal OCR coordination scheme is developed in this study, using standard and non-standard tripping characteristics for phase and ground events. The Tug of War Optimization and Charged System Search algorithms are used to mitigate the effects of DGs on fault currents and locations. The findings show that the proposed multifunction OCR scheme reduces tripping time and increases relay sensitivity in islanding operation mode.
IET RENEWABLE POWER GENERATION
(2023)
