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Journal articles on the topic 'Unsymmetrical fault'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Anyaka, Boniface Onyemaechi, and Innocent Onyebuchi Ozioko. "Transmission line short circuit analysis by impedance matrix method." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 2 (2020): 1712. http://dx.doi.org/10.11591/ijece.v10i2.pp1712-1721.

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Fault analysis is the process of determining the magnitude of fault voltage and current during the occurrence of different types of fault in electrical power system. Transmission line fault analysis is usually done for both symmetrical and unsymmetrical faults. Symmetrical faults are called three-phase balance fault while unsymmetrical faults include: single line-to-ground, line-to-line, and double line-to-ground faults. In this research, bus impedance matrix method for fault analysis is presented. Bus impedance matrix approach has several advantages over Thevenin’s equivalent method and other

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2

Boniface, Onyemaechi Anyaka, and Onyebuchi Ozioko Innocent. "Transmission line short circuit analysis by impedance matrix method." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 2 (2020): 1712–21. https://doi.org/10.11591/ijece.v10i2.pp1712-1721.

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Fault analysis is the process of determining the magnitude of fault voltage and current during the occurrence of different types of fault in electrical power system. Transmission line fault analysis is usually done for both symmetrical and unsymmetrical faults. Symmetrical faults are called three-phase balance fault while unsymmetrical faults include: single line-to-ground, line-to-line, and double line-to-ground faults. In this research, bus impedance matrix method for fault analysis is presented. Bus impedance matrix approach has several advantages over Thevenin’s equivalent method and

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3

Huang, C. W., S. R. Wang, and W. T. Hsu. "Application of the percentage differential relay and stator earth fault protection in synchronous generators." Journal of Physics: Conference Series 2878, no. 1 (2024): 012001. http://dx.doi.org/10.1088/1742-6596/2878/1/012001.

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Abstract Synchronous generators play a vital role in the power system. The relay protection distributed in the system can quickly remove the fault, effectively respond to it, and solve the problem. In this paper, the characteristics of a synchronous generator neutral ungrounded are analyzed when various unsymmetrical and symmetrical faults occur in the internal and external areas, and the percentage differential relay is used to solve the problem of short circuit faults. For the single line-to-ground fault, the stator earth fault protection is also introduced to compensate for the shortcomings

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4

Thangavelu, Magesh, Annie Isabella, Sambath Srinivasan, Devi Ganesan, and Raja Thangavelu. "Impact of an Unsymmetrical Fault on the Controller of the DFIG Wind Farm." Indian Journal of Science and Technology 16, no. 10 (2023): 756–63. https://doi.org/10.17485/IJST/v16i10.2375.

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Abstract <strong>Objectives:</strong> DFIG-based wind farms are predominant in their performance when compared to other types of generators. In the field study, due to transient events, converters at the machine side and grid side are affected. To protect the converters from an abnormal operation, overcurrent protective relays have to be designed and incorporated. Unsymmetrical fault analysis are help in the design of protective devise and speed sensors. <strong>Methods:</strong> DFIG-based wind systems are developed using the DIgSILENT power factory software and EMT simulations

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Su, Shan, and Bing Sheng Yan. "Fault Location Algorithm of the 10kV Rural Network Based on Power Frequency Communication." Advanced Materials Research 722 (July 2013): 287–91. http://dx.doi.org/10.4028/www.scientific.net/amr.722.287.

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A new fault locating model of multi-ports data of 10kV village distributed network has been constructed abased on the basic theory of liner circurt. by taking fault ports as boundaries, the faulted power system is divided into a symmetrical network without the faults and unsymmetrical networks employed to simulate the faults. In this modell, The locating of fault point is looked as an unknowed variable and it is included in the Zbus of unsymmetrical network. We can get it though solving the equation. The method does not need to modify the Zbus of original sequence network and easy implementati

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Sebastian, Ekop Ubong, Ekom Enefiok Okpo, and Imo Edwin Nkan. "Dynamic Simulation and Analysis of Three Phase Induction Motor for Faults Detection using Matlab/Simulink." Journal of Engineering Research and Reports 26, no. 11 (2024): 286–303. http://dx.doi.org/10.9734/jerr/2024/v26i111331.

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The dynamic simulation of three-phase induction motors under fault conditions is essential for understanding and mitigating the impacts of electrical faults on motor performance. This study aims to simulate and analyze the impact of electrical faults on three-phase induction motors to improve fault detection and isolation strategies. Utilizing MATLAB/Simulink software, the behavior of three-phase induction motors under both symmetrical and unsymmetrical faults is modeled and analyzed. The motor’s baseline parameters, include 3 Amps rated power and speed of 1500 RPM. Symmetrical faults, such as

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Tuhin, Saiful Islam, Md Al Araf, Md Arif Hasan Masum, Md Nure Alam Siddiki, and Md Omor Faruk. "Integrative Fault Analysis of Transmission Lines using MATLAB and ETAP." Feb-Mar 2024, no. 42 (March 4, 2024): 54–65. http://dx.doi.org/10.55529/jecnam.42.54.65.

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This research paper investigates the major issue of power transmission line faults in electrical engineering. Through advanced simulation tools such as MATLAB and ETAP, the study aims to comprehensively analyze various fault circumstances, including symmetrical and unsymmetrical faults, to determine fault Kilovolt Ampere (KVA) or Megavolt Ampere (MVA). Through detailed fault analysis, insights are sought into improving the reliability and efficiency of power transmission networks, consequently minimizing risks of property damage, casualties, and economic disruptions.

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Maurya, Shailesh Kumar. "Three-Phase Transmission Line Fault Detection and Its Location." Stallion Journal for Multidisciplinary Associated Research Studies 3, no. 5 (2024): 48–53. https://doi.org/10.55544/sjmars.3.5.6.

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Nowadays, the per capita consumption of Electrical Energy is a parameter of any country's Development. In India, we are working on improving Transmission Line Efficiency by using semiconductor drives and information technology to increase the per capita electrical energy consumption. This paper has the proposed model for three-phase fault detection & its location. In transmission lines, there are two types of faults: (i) symmetrical fault and (ii) unsymmetrical fault. Generally, the B Phase follows the kinds of faults in transmission line Single Line to Ground Fault Line-to-Line Fault Doub

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9

Ranjithkumar and Maruthupandi. "Identification of Single Phase to Ground Faults in Power Distribution Systems with RG Technique." March 2022 4, no. 1 (2022): 9–18. http://dx.doi.org/10.36548/jeea.2022.1.002.

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Fault in a power system is an irregular condition that interrupts the stability of the system and causes a high fault current to flow through the power systems and its devices. Single phase to ground fault is an unsymmetrical fault that takes place between any phase of the system and ground. It is the most frequently occurring fault (70%-80%) that happens in the power system. Resonant Grounding (RG) is the proposed approach that reduces a fault current of a single phase to ground fault to a minimum level that is often independent of fault impedance. In this case, the single phase to ground fau

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Ranjithkumar and Maruthupandi. "Identification of Single Phase to Ground Faults in Power Distribution Systems with RG Technique." March 2022 4, no. 1 (2022): 9–18. http://dx.doi.org/10.36548/jeea.2022.1.002.

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Fault in a power system is an irregular condition that interrupts the stability of the system and causes a high fault current to flow through the power systems and its devices. Single phase to ground fault is an unsymmetrical fault that takes place between any phase of the system and ground. It is the most frequently occurring fault (70%-80%) that happens in the power system. Resonant Grounding (RG) is the proposed approach that reduces a fault current of a single phase to ground fault to a minimum level that is often independent of fault impedance. In this case, the single phase to ground fau

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11

Veerasamy, Veerapandiyan, Noor Abdul Wahab, Rajeswari Ramachandran, Muhammad Mansoor, Mariammal Thirumeni, and Mohammad Lutfi Othman. "High Impedance Fault Detection in Medium Voltage Distribution Network Using Discrete Wavelet Transform and Adaptive Neuro-Fuzzy Inference System." Energies 11, no. 12 (2018): 3330. http://dx.doi.org/10.3390/en11123330.

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This paper presents a method to detect and classify the high impedance fault that occur in the medium voltage (MV) distribution network using discrete wavelet transform (DWT) and adaptive neuro-fuzzy inference system (ANFIS). The network is designed using MATLAB software R2014b and various faults such as high impedance, symmetrical and unsymmetrical fault have been applied to study the effectiveness of the proposed ANFIS classifier method. This is achieved by training the ANFIS classifier using the features (standard deviation values) extracted from the three-phase fault current signal by DWT

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Reddy.V, Veera Nagi, D. V. Ashok Kumar, and Venkata R. Kota. "Fuzzy-PI Controller based Modulated Multilevel UPQC under Faulty Conditions." Recent Advances in Electrical & Electronic Engineering (Formerly Recent Patents on Electrical & Electronic Engineering) 13, no. 7 (2020): 1010–21. http://dx.doi.org/10.2174/2352096513666200121094609.

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Background: This paper presents voltage and current quality improvement in high/medium electrical distribution system using modulated multilevel unified power quality conditioner (MM-UPQC). Nowadays, power quality is one of the major issues due to the increase in usage of more non-linear loads in agricultural, commercial, industrial sectors. The industrial loads produce large amount of harmonics and power imbalances, which cause various power quality related issues like poor power factor, voltage sag, voltage swell, voltage interruption etc. Methods: The prime objective of this work is to desi

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Muhamad Nabil Bin Hidayat. "Development of an Optimized PID Control Strategy for PV-Integrated Microgrids in Modern Power System." Journal of Information Systems Engineering and Management 10, no. 48s (2025): 892–906. https://doi.org/10.52783/jisem.v10i48s.9675.

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This work presents the design and analysis of an optimized Proportional-Integral-Derivative (PID) controller for photovoltaic (PV)-based microgrids integrated into power systems. Conventional PI controllers often suffer from issues such as prolonged oscillation time, high amplitude responses, excessive overshoot, and persistent steady-state errors—particularly during fault conditions in PV microgrids. To address these limitations, this study aims to introduce and evaluate an optimized PID controller that enhances system responsiveness and improves stability under both DC and AC fault condition

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14

Tekale, Mr Pramod Vilas. "Transmission line Three-Phase Fault Analysis Using Matlab Simulink." International Journal for Research in Applied Science and Engineering Technology 10, no. 7 (2022): 1139–44. http://dx.doi.org/10.22214/ijraset.2022.45420.

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Abstract: The Electric Power System has many different sections, transmission system is one of. Where power is transmitted from generating stations and substations via transmission lines into consumers. In the Power System causes of faults are many, they include lighting, wind damage, trees falling across transmission lines, vehicles or aircraft colliding with the transmission towers or poles, birds shorting lines. The fault occurring in power system can be broadly classified into symmetrical and unsymmetrical fault. Generally these faults are occurred in the long transmission line system such

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15

Bhardwaj, Swapnil. "Implementation of Symmetrical and Unsymmetrical Fault in Power System Network Using Matlab." International Journal for Research in Applied Science and Engineering Technology 9, no. VII (2021): 528–34. http://dx.doi.org/10.22214/ijraset.2021.36329.

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The main goal of this study is to provide a MATLAB-based simulation model for three-phase symmetrical and unsymmetrical faults. This paper shows how to deal with MATLAB programming in which a transmission line model is created and various challenges are acted out using a toolbox. Fault analysis for many types of faults has been performed, and the resultant effects may be seen in simulation output such as voltage, current, and control, as well as the positive, negative, and zero grouping parts of voltage and current output as waveforms.

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16

Holdyk, A., J. A. Suul, and J. I. Marvik. "Influence of wind farm fault current control strategies on distance protection during unsymmetrical faults." Journal of Physics: Conference Series 2875, no. 1 (2024): 012007. http://dx.doi.org/10.1088/1742-6596/2875/1/012007.

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Abstract This paper evaluates the performance of distance protection near a wind farm with type IV wind turbines with various basic fault current control strategies implemented in the power converters. The considered fault control strategies include control of purely positive sequence currents or combined positive and negative sequence currents for reactive power support of various magnitudes. A multi-variable study is performed in PSCAD to show performance of a basic algorithm of distance protection at a 420 kV line in a vicinity of the wind farm. The results show that the majority of relay f

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17

Ahuja, Hemant, Arika Singh, Sachin Sharma, Gulshan Sharma, and Pitshou N. Bokoro. "Coordinated Control of Wind Energy Conversion System during Unsymmetrical Fault at Grid." Energies 15, no. 13 (2022): 4898. http://dx.doi.org/10.3390/en15134898.

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High penetration of wind power into the grid necessitates the coordinated action of wind energy conversion systems and the grid. A suitable generation control is required to fulfill the grid integration requirements, especially during faults. A system using a pair of voltage source converters with a squirrel cage induction generator coupled to a wind turbine is proposed to provide fault ride-through during grid faults. A threefold action is used for providing the effective fault ride-through via coordinated action of the machine side and the grid side converter. The entire wind energy conversi

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18

Boonyapakdee, Konghirun, and Sangswang. "Separated Phase–Current Controls Using Inverter-Based DGs to Mitigate Effects of Fault Current Contribution from Synchronous DGs on Recloser–Fuse." Applied Sciences 9, no. 20 (2019): 4311. http://dx.doi.org/10.3390/app9204311.

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Synchronous distributed generators (SDGs) significantly affect recloser–fuse coordination due to the high fault current contribution. This paper proposes a separated phase–current control using inverter-based distributed generators (IBDGs) to remove the effects of fault current contributions from SDGs during unsymmetrical faults. The three-phase current produced by IBDGs is independently controlled. While the total fault current is reduced by adjusting the current phase angle in the faulty phase, the energy in the DC-link capacitor (Cdc) is delivered to the grid in order to avoid the rise of D

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19

Patra, Jagannath, and Nitai Pal. "A Mathematical Approach of Voltage Sag Analysis Incorporating Bivariate Probability Distribution in a Meshed System." Energies 15, no. 20 (2022): 7592. http://dx.doi.org/10.3390/en15207592.

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In this paper, different mathematical expressions are derived to compute the residual magnitude of voltage caused by faults along the line and on the bus. Symmetrical and unsymmetrical faults are taken into consideration, and the consequences of the various fault distributions are considered. A new way of assessing a sag is proposed that incorporates the method of fault position and mathematical expression based on sequence currents and voltages. The fault impedance is introduced to obtain a better result. A fast and efficient load flow analysis technique produces quick computational results.

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20

Saha, S., M. Aldeen, and C. P. Tan. "Unsymmetrical fault diagnosis in transmission/distribution networks." International Journal of Electrical Power & Energy Systems 45, no. 1 (2013): 252–63. http://dx.doi.org/10.1016/j.ijepes.2012.09.005.

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21

Tiwari, Garima, and Sanju Saini. "Radial Power Distribution System Fault Classification Model Based on ANFIS." International Journal on Recent and Innovation Trends in Computing and Communication 11, no. 6s (2023): 371–78. http://dx.doi.org/10.17762/ijritcc.v11i6s.6943.

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The classification of problems in power systems plays an extremely important part and has evolved into a necessity that is of the utmost importance to the operation of energy grids. For the purpose of fault classification in IEEE 13 node radial distribution systems, this paper makes use of both an Artificial Neural Network (ANN) and a Neural Fuzzy adaptive Inference System (ANFIS). Simulations of the suggested models are carried out in MATLAB/SIMULINK, and fault currents from all three phases are analyzed in order to extract statistical characteristics. Input data vectors include the standard

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22

Shingade, Ganesh, and Sweta Shah. "Fault detection and location based SVM for three phase transmission lines utilizing positive sequence fault components." AiBi Revista de Investigación, Administración e Ingeniería 11, no. 3 (2023): 61–70. http://dx.doi.org/10.15649/2346030x.3302.

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Transmission lines are an imperative element of the modern power systems. Any faults in them can cause an undesirable interruption in power supply. Precise analysis of these faults is important in-order to ensure an incessant supply of power. For this purpose, fault detection and classification are needed to clear any such faults and re-establish the system to maintain its normal operation. In this paper, a novel integrated approach of protective relaying with enhanced support vector machine algorithm has been adopted for detecting faults and its location estimation in long transmission line.

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23

Magesh, Thangavelu, Isabella Annie, Srinivasan Sambath, Ganesan Devi, and Thangavelu Raja. "Impact of an Unsymmetrical Fault on the Controller of the DFIG Wind Farm." Indian Journal Of Science And Technology 16, no. 10 (2023): 756–63. http://dx.doi.org/10.17485/ijst/v16i10.2375.

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Hamoodi, Ali Nathim, Mohammed Ahmed Ibrahim, and Bashar Muhammed Salih. "An intelligent differential protection of power transformer based on artificial neural network." Bulletin of Electrical Engineering and Informatics 11, no. 1 (2022): 93–102. http://dx.doi.org/10.11591/eei.v11i1.3547.

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This paper describes the application of artificial neural network (ANN) techniques for protecting small power transformer 2 kVA (Terco type). ANN network trained according to the primary and secondary currents data under NN tool, this network performs as a function of differential protection relay. Symmetrical and unsymmetrical faults are analyzed using Matlab environment. ANN network senses the difference in the internal current of both transformer sides and sending a trip to the circuit breaker (CB) at moment of fault occurrence. All the voltages and the currents waveforms affected with the

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Ali, Nathim Hamoodi, Ahmed Ibrahim Mohammed, and Muhammed Salih Bashar. "An intelligent differential protection of power transformer based on artificial neural network." Bulletin of Electrical Engineering and Informatics 11, no. 1 (2022): 93–102. https://doi.org/10.11591/eei.v11i1.3547.

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This paper describes the application of artificial neural network (ANN) techniques for protecting small power transformer 2 kVA (Terco type). ANN network trained according to the primary and secondary currents data under NN tool, this network performs as a function of differential protection relay. Symmetrical and unsymmetrical faults are analyzed using Matlab environment. ANN network senses the difference in the internal current of both transformer sides and sending a trip to the circuit breaker (CB) at moment of fault occurrence. All the voltages and the currents waveforms affected with the

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26

Islam, Md Rashidul, Md Najmul Huda, Jakir Hasan, et al. "Fault Ride Through Capability Improvement of DFIG Based Wind Farm Using Nonlinear Controller Based Bridge-Type Flux Coupling Non-Superconducting Fault Current Limiter." Energies 13, no. 7 (2020): 1696. http://dx.doi.org/10.3390/en13071696.

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High penetration of Doubly Fed Induction Generator (DFIG) into existing power grid can attribute complex issues as they are very sensitive to the grid faults. In addition, Fault Ride Through (FRT) is one of the main requirements of the grid code for integrating Wind Farms (WFs) into the power grid. In this work, to enhance the FRT capability of the DFIG based WFs, a Bridge-Type Flux Coupling Non-Superconducting Fault Current Limiter (BFC-NSFCL) is proposed. The effectiveness of the proposed BFC-NSFCL is evaluated through performance comparison with that of the Bridge-Type Fault Current Limiter

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Swain, Snehaprava, and Pravat Kumar Ray. "Fault Analysis in a Grid Integrated DFIG Based Wind Energy System with NA CB_P Circuit for Ridethrough Capability and Power Quality Improvement." International Journal of Emerging Electric Power Systems 17, no. 6 (2016): 619–30. http://dx.doi.org/10.1515/ijeeps-2016-0095.

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Abstract In this paper a three phase fault analysis is done on a DFIG based grid integrated wind energy system. A Novel Active Crowbar Protection (NACB_P) system is proposed to enhance the Fault-ride through (FRT) capability of DFIG both for symmetrical as well as unsymmetrical grid faults. Hence improves the power quality of the system. The protection scheme proposed here is designed with a capacitor in series with the resistor unlike the conventional Crowbar (CB) having only resistors. The major function of the capacitor in the protection circuit is to eliminate the ripples generated in the

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Bukvisova, Zuzana, Jaroslava Orsagova, David Topolanek, and Petr Toman. "Two-Terminal Algorithm Analysis for Unsymmetrical Fault Location on 110 kV Lines." Energies 12, no. 7 (2019): 1193. http://dx.doi.org/10.3390/en12071193.

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This work analyses a two-terminal algorithm designed to locate unsymmetrical faults on 110 kV power transmission lines. The algorithm processes synchronized voltage and current data obtained from both ends of the protected transmission line and calculates the distance of the fault. It is based on decomposing the equivalent circuit into the positive-, negative- and zero-sequence components and finding the point where the output voltages of the right and the left side of the transmission line are equal. Compared to the conventional distance relay locator, the accuracy of this method is higher an

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Kunal, Patil, Sonawane Rohan, Tarle Ashutosh, and Walunj Prathamesh. "Simulation of Transmission Line using MATLAB." Advancement of Signal Processing and its Applications 5, no. 2 (2022): 1–6. https://doi.org/10.5281/zenodo.7186430.

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<em>The demand of electricity increases day by day these results to transmit more power by increasing the transmission line capacity from one place to the other place. The main goal is to develop a MATLAB based Simulation model for analyzing 3- phase symmetrical and unsymmetrical faults on power transmission lines. Generally, these faults occur in the long transmission line system such as single line to ground fault (L-G), double line to ground (2L-G), triple line to ground fault (3LG) and Line to line fault (L-L). Fault analysis for different kinds of faults has been done and it impacts are a

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Kunal, Patil, Sonawane Rohan, Tarle Ashutosh, and PrathameshWalunj. "Simulation of Transmission Line using MATLAB." Advancement of Signal Processing and its Applications 5, no. 2 (2022): 1–6. https://doi.org/10.5281/zenodo.7187642.

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<em>The demand of electricity increases day by day these results to transmit more power by increasing the transmission line capacity from one place to the other place. The main goal is to develop a MATLAB based Simulation model for analyzing 3- phase symmetrical and unsymmetrical faults on power transmission lines. Generally, these faults occur in the long transmission line system such as single line to ground fault (L-G), double line to ground (2L-G), triple line to ground fault (3LG) and Line to line fault (L-L). Fault analysis for different kinds of faults has been done and it impacts are a

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Chachar, Muhammad Tarique, Aslam Pervez Memon, and Jamshed Ahmed Ansari. "Application of Time-Frequency Analysis with Selection of Suitable Mother Wavelets for Transient States of HVDC Transmission Lines." Sir Syed University Research Journal of Engineering & Technology 13, no. 1 (2023): 24–34. http://dx.doi.org/10.33317/ssurj.539.

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Recent developments in power semiconductor devices have made High Voltage Direct Current (HVDC) transmission systems the most crucial technology for future power systems. Today several HVDC projects have been commissioned around the world. The primary concern for such an advanced HVDC grid is to follow standard grid codes to maintain the safety and stability of the electrical equipment during transient and dynamic circumstances. Although the HVDC system has been recognized as the most prominent technology to transmit electric power, some issues must be addressed, such as selective and quick de

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Pirhadi, Alireza, Hossein Shayan, and Mohammad Tavakoli Bina. "Design of an unsaturated core-based fault current limiter to tackle unsymmetrical faults." Electric Power Systems Research 187 (October 2020): 106482. http://dx.doi.org/10.1016/j.epsr.2020.106482.

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M., Nandhini, and Srinivasan S. "A Novel Protection Method for Unsymmetrical Fault Detection of Overhead Transmission Line by Using DWT." Bonfring International Journal of Man Machine Interface 7, no. 1 (2017): 01–05. http://dx.doi.org/10.9756/bijmmi.2214.

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Ebrahim, Essamudin Ali, Maged N. F. Nashed, and Mona N. Eskander. "Hardware in the Loop-Based Testing of Three Schemes for Mitigation the Effect of Unsymmetrical Grid Faults on DFIG." International Journal of Electrical Engineering and Computer Science 6 (January 30, 2024): 64–75. http://dx.doi.org/10.37394/232027.2024.6.7.

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This paper presents three proposed schemes to mitigate the effect of unsymmetrical voltage-to-ground fault on a wind-driven grid-connected Double Fed Induction Generator (DFIG). The first tested scheme comprises a static compensator (STATCOM) connected to the DFIG stator, while a three-phase parallel RL external impedance is connected to the rotor circuit in the second scheme. The STATCOM and the added rotor impedance are connected simultaneously in the third scheme. The effect of applying the three schemes on the responses of the stator and rotor voltages and currents, the dc-link voltage and

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Sudhakar, Puladasu, Sushama Malaji, and B. Sarvesh. "Impacts of Embedded Generation on Distribution Network Behavior." International Journal of Reconfigurable and Embedded Systems (IJRES) 7, no. 2 (2018): 91. http://dx.doi.org/10.11591/ijres.v7.i2.pp91-103.

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This paper explores the impacts of multiple embedded generators penetration on distribution system behavior. For this rationale, a IEEE-13 bus distribution feeder was modeled and investigates by assimilating different types of embedded generation (EG) sources. Different scenarios were implemented in which WIND, SOFC FUEL CELL, SOLAR and MICRO TURBINE plants were modeled with high variability of load and generation to observe their impacts on system’s protection, unsymmetrical faults also consider observing impacts effectively. To eradicate the impacts on distribution system with presence of EG

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Puladasu, Sudhakar, Malaji Sushama, and Sarvesh B. "Impacts of Embedded Generation on Distribution Network Behavior." International Journal of Reconfigurable and Embedded Systems 7, no. 2 (2018): 91–103. https://doi.org/10.11591/ijres.v7.i2.pp91-103.

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This paper explores the impacts of multiple embedded generators penetration on distribution system behavior. For this rationale, a IEEE-13 bus distribution feeder was modeled and investigates by assimilating different types of embedded generation (EG) sources. Different scenarios were implemented in which WIND, SOFC FUEL CELL, SOLAR and MICRO TURBINE plants were modeled with high variability of load and generation to observe their impacts on system’s protection, unsymmetrical faults also consider observing impacts effectively. To eradicate the impacts on distribution system with presence

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Stemmle, M., C. Neumann, F. Merschel, et al. "Analysis of Unsymmetrical Faults in High Voltage Power Systems With Superconducting Fault Current Limiters." IEEE Transactions on Applied Superconductivity 17, no. 2 (2007): 2347–50. http://dx.doi.org/10.1109/tasc.2007.899136.

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Uzair, Muhammad, Mohsen Eskandari, Li Li, and Jianguo Zhu. "Machine Learning Based Protection Scheme for Low Voltage AC Microgrids." Energies 15, no. 24 (2022): 9397. http://dx.doi.org/10.3390/en15249397.

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The microgrid (MG) is a popular concept to handle the high penetration of distributed energy resources, such as renewable and energy storage systems, into electric grids. However, the integration of inverter-interfaced distributed generation units (IIDGs) imposes control and protection challenges. Fault identification, classification and isolation are major concerns with IIDGs-based active MGs where IIDGs reveal arbitrary impedance and thus different fault characteristics. Moreover, bidirectional complex power flow creates extra difficulties for fault analysis. This makes the conventional meth

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Philip, Marshall, and Peer Kareem. "Power Conditioning Using DVR under Symmetrical and Unsymmetrical Fault Conditions." European Journal of Electrical Engineering 22, no. 2 (2020): 179–91. http://dx.doi.org/10.18280/ejee.220212.

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Jen-Hao Teng. "Unsymmetrical Short-Circuit Fault Analysis for Weakly Meshed Distribution Systems." IEEE Transactions on Power Systems 25, no. 1 (2010): 96–105. http://dx.doi.org/10.1109/tpwrs.2009.2036485.

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Ibrahim, Doaa khalil, and Saber Mohamed Saleh. "Unsymmetrical High-impedance Earth Fault Central Relay for Transmission Networks." Electric Power Components and Systems 39, no. 14 (2011): 1469–92. http://dx.doi.org/10.1080/15325008.2011.596501.

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Nurwulan, Nurul Retno, and Wilcha Anatasya Veronica. "Implementation of Failure Mode and Effect Analysis and Fault Tree Analysis in Paper Mill: A Case Study." Jurnal Rekayasa Sistem Industri 9, no. 3 (2020): 171–76. http://dx.doi.org/10.26593/jrsi.v9i3.4059.171-176.

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A good quality control system is important to be implemented to increase productivity and minimize defects in products. One of the quality control methods is failure mode and effect analysis (FMEA). This study uses the FMEA to identify the causes of the defects and recommend the prevention methods to overcome the causes of the defects in an Indonesian paper mill. The risk priority number (RPN) is calculated by multiplying the severity, occurrence, and detection of the failures that have been determined. Unsymmetrical and tainted products are the most dominant defects in the paper mill. An inap

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Natesan, Chitra, Senthil Kumar Ajithan, Shobana Mani, Priyadharshini Palani, and Prabaakaran Kandhasamy. "Performance Analysis of Autonomous Microgrid Subsequent to Symmetrical and Unsymmetrical Fault Triggered Condition." Scientific World Journal 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/715963.

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Hi-tech scenario and the ecological compression are the key point to drive the intervention of the renewable in the distribution system. In the perspective of complex power system planners, the transient performance of the microgrid is the main concern. For that purpose, various fault cases are explored in order to examine the microgrid transient performance when subjected to accidental events. In this work, the microgrid is modelled with two distributed generations (DGs) tied with a converter separately. With this intention, droop control strategy is adopted for the microsources to examine th

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Sakala, J. "General Fault Admittance Method Solution for a Line-to-Line-to-Line-to-Ground Unsymmetrical Fault." British Journal of Applied Science & Technology 4, no. 22 (2014): 3120–33. http://dx.doi.org/10.9734/bjast/2014/10269.

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Nsaif, Younis M., Molla Shahadat Hossain Lipu, Aini Hussain, Afida Ayob, Yushaizad Yusof, and Muhammad Ammirrul A. M. Zainuri. "A Novel Fault Detection and Classification Strategy for Photovoltaic Distribution Network Using Improved Hilbert–Huang Transform and Ensemble Learning Technique." Sustainability 14, no. 18 (2022): 11749. http://dx.doi.org/10.3390/su141811749.

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Due to the increased integration of distributed generations in distributed networks, their development and operation are facing protection challenges that traditional protection systems are incapable of addressing. These problems include variations in the fault current during various operation modes, diverse distributed network topology, and high impedance faults. Therefore, appropriate and reasonable fault detection is highly encouraged to improve the protection and dependability of the distributed network. This paper proposes a novel technique that employs an improved Hilbert–Huang Transform

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ELADAWY, Mohamed, and Ibrahim Metwally. "STACKED DELTA DESIGN OF THREE-PHASE PERMANENT-MAGNET FAULT CURRENT LIMITERS." Journal of Engineering Research [TJER] 18, no. 1 (2021): 26–35. http://dx.doi.org/10.53540/tjer.vol18iss1pp26-35.

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This paper proposes an improvement for the dynamic performance of presaturated stacked permanent magnet biased three-phase fault current limiter (PMFCL) through COMSOL finite element simulation. The nonlinear demagnetization behavior of the permanent magnet, especially in the upper part of the B-H curve with negative magnetic field intensity, has been modelled through the Jiles-Atherton method. This enables a realistic representation of the PMFCL dynamic behavior throughout its entire operations of pre-fault, fault and fault removal, respectively. The experimental measurements have been consid

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Boumalha, N., D. Kouchih, M. Tadjine, and M. S. Boucherit. "Fault Tolerant Control of Induction Motor Drives Subject to Rotor Resistance Adaptation." Algerian Journal of Signals and Systems 1, no. 1 (2016): 11–22. http://dx.doi.org/10.51485/ajss.v1i1.13.

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This paper describes the synthesis of a vector fault tolerant control of induction motor drives using an adaptive observer. This observer is used to detect the rotor resistance and flux components using the stator terminal voltages and currents. The rotor resistance is adapted using a new algorithm which does not imply a high computational load. Stability analysis based on Lyapunov theory is performed in order to guarantee the closed loop stability. The rotor resistance is used for the correction of the controllers and the rotor time constant. To verify the tolerance and the applicability of t

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Bhuiya, Md Ferdouse Hossain, Rohaiza Hamdan, Dur Mohammad Soomro, Abdelrehman Omer Idris, and Hussain Sharif. "High impedance fault detection in 11 kV overhead line with discrete wavelet transform and independent component analysis." Indonesian Journal of Electrical Engineering and Computer Science 24, no. 2 (2021): 661. http://dx.doi.org/10.11591/ijeecs.v24.i2.pp661-672.

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This paper proposes an analysis of high-impedance fault detection algorithms for medium voltage distribution lines based on the discrete wavelet transform (DWT) technique and a more advanced technique named independent component analysis (ICA) independently. Three-phase distribution line model and two diodes high impedance fault model, which represents the unsymmetrical fault current of electric arc, simulated using MATLAB/Simulink. High impedance fault (HIF) detection algorithm initially analyzes the sampled current waveforms through DWT and the resultant third level high-frequency components

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Bhuiya, Md Ferdouse Hossain, Rohaiza Hamdan, Dur Mohammad Soomro, Abdelrehman Omer Idris, and Hussain Sharif. "High impedance fault detection in 11 kV overhead line with discrete wavelet transform and independent component analysis." Indonesian Journal of Electrical Engineering and Computer Science 24, no. 2 (2021): 661–72. https://doi.org/10.11591/ijeecs.v24.i2.pp661-672.

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This paper proposes an analysis of high-impedance fault detection algorithms for medium voltage distribution lines based on the discrete wavelet transform (DWT) technique and a more advanced technique named independent component analysis (ICA) independently. Three-phase distribution line model and two diodes high impedance fault model, which represents the unsymmetrical fault current of electric arc, simulated using MATLAB/Simulink. High impedance fault (HIF) detection algorithm initially analyzes the sampled current waveforms through DWT and the resultant third level high-frequency components

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Fawad Shaikh, Muhammad, Madad Ali Shah, Sunny Katyara, and Bhawani Shankar Chowdhry. "Estimation of Phase Angle Jump (PAJ) for Different Types of Faults and Unbalancing in Distribution System." International Journal of Engineering & Technology 7, no. 4.38 (2018): 23. http://dx.doi.org/10.14419/ijet.v7i4.38.24313.

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Voltage sag caused by the faults in the power system has serious power quality issues and sometimes leads to interruption of power supply. The characteristics of voltage sag are its magnitude, time and phase angle jump (PAJ). This paper represents the estimation of phase angle jump (PAJ) when different types of faults are occurred in distribution system. Since the unbalancing is one of the major issues in distribution system that increases the zero sequence currents, over heats the distribution transformer, causes huge voltage drops in distributor etc. Therefore, the method used in this paper

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