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View article: New Power Balance Equations for Modelling Electric Arc Furnace
New Power Balance Equations for Modelling Electric Arc Furnace Open
Electric arc furnaces (EAFs) are electrical networks' most significant single loads. On the other hand, harmful voltage flicker and harmonics are produced by the time‐varying and nonlinear voltage‐current properties of EAF. A precise EAF m…
View article: An Improved Communication‐Free Dual Characteristic Over Current‐Based Protection Scheme for AC Microgrids
An Improved Communication‐Free Dual Characteristic Over Current‐Based Protection Scheme for AC Microgrids Open
The entry of distributed generation causes the network to become complicated, and as a result, the protection coordination between the network equipment is lost. In previous studies, three decision variables were considered for each direct…
View article: Islanding Detection in DC Microgrids Based on Empirical Mode Decomposition
Islanding Detection in DC Microgrids Based on Empirical Mode Decomposition Open
Improved efficiency, enhanced integration with distributed generations (DGs), and the proliferation of DC loads in power systems have driven a surge in the adoption of DC microgrids (DCMGs). However, unintentional islanding poses a signifi…
View article: An Enhanced Avdonin‐Based Approach With Probabilistic Coefficients for Incipient Fault Modeling in Underground Power Cables
An Enhanced Avdonin‐Based Approach With Probabilistic Coefficients for Incipient Fault Modeling in Underground Power Cables Open
One well‐known fault that arises from water intrusion and power cable insulation failure is the incipient fault (IF) in underground power cables (UPCs). Therefore, it is necessary to provide appropriate models for modeling this fault and a…
View article: Optimized time varying parameters of the power balance equation model for electric arc furnaces
Optimized time varying parameters of the power balance equation model for electric arc furnaces Open
An accurate model of electric arc furnaces (EAFs) is required to analyse their impact on the system's power quality. One of the well‐known approaches to model EAF is using the power balance equation. This model has two terms, each one has …
View article: Quantizing branches' responsibility for voltage sags/swells and flicker events
Quantizing branches' responsibility for voltage sags/swells and flicker events Open
The purpose of this study is to find simple cost-efficient algorithms for real-time quantizing the responsibility for power quality issues in every branch in an industrial network. The study is focused on voltage sag/swell and flicker whic…
View article: Optimal placement and coordination of the protection devices simultaneous with optimal allocation of the DGs
Optimal placement and coordination of the protection devices simultaneous with optimal allocation of the DGs Open
Optimal coordination of the protection devices (PDs) is performed here simultaneous with optimal allocation of them and the DGs. The PDs are a set of directional overcurrent relays (DOCRs) and voltage relays, each with its own fast switch …
View article: Development of an Intelligent Detection Method of DC Series Arc Fault in Photovoltaic System Using Multilayer Perceptron and Bi-Directional Long Short-Term Memory
Development of an Intelligent Detection Method of DC Series Arc Fault in Photovoltaic System Using Multilayer Perceptron and Bi-Directional Long Short-Term Memory Open
A DC series arc fault is one of the significant sources of electrical wiring fires in residential buildings. The production of extremely high temperatures may lead to the ignition of nearby combustible materials. The applications of arc fa…
View article: Efficient practical method for differential protection of power transformer in the presence of the fault current limiters
Efficient practical method for differential protection of power transformer in the presence of the fault current limiters Open
The algorithms of the present generation of practical differential relays are based on two methods. The first method is based on the ratio of the harmonic content of the differential current, and the second one is based on the length of th…
View article: Enhanced models with time‐series coefficients used for electric arc furnace
Enhanced models with time‐series coefficients used for electric arc furnace Open
Electric arc furnace (EAF) is one of the most disturbing loads in the power system as it is highly time‐varying and nonlinear. In this paper, new models based on the instantaneous EAF voltage and current, recorded from EAFs in Mobarakeh st…
View article: Modeling of Extremely Short-Time Power Variations of Wound Rotor Induction Machines Wind Farms for Flicker Studies
Modeling of Extremely Short-Time Power Variations of Wound Rotor Induction Machines Wind Farms for Flicker Studies Open
Time-varying nature of wind farms is one of their major obstacles in providing a constant and reliable power output. They can be considered as a time-varying source of power considering different timeframes, from long to extremely short ti…
View article: Dynamic Polynomial Models With ARMA Coefficients Used for Modeling the DC Series Arc Fault in Photovoltaic Systems
Dynamic Polynomial Models With ARMA Coefficients Used for Modeling the DC Series Arc Fault in Photovoltaic Systems Open
DC series arc fault (DCSAF) in photovoltaic (PV) systems is a controversial issue owing to the challenges related to its modeling and protection. By utilizing the actual recorded data, for the first time, polynomial models are used to mode…
View article: Designing and manufacturing of electric arc furnace currents measurement system in Mobarakeh Steel Company by printed circuit board‐type Rogowski coils
Designing and manufacturing of electric arc furnace currents measurement system in Mobarakeh Steel Company by printed circuit board‐type Rogowski coils Open
This paper deals with the utilization of printed circuit board Rogowski coils (PCBRCs) for differential protection of electric arc furnace (EAF) transformers in Mobarakeh Steel Company (MSC), Isfahan, Iran. Because of a high level of curre…
View article: Time-Variant Schwarz Based Model for DC Series Arc Fault Modeling in Photovoltaic Systems
Time-Variant Schwarz Based Model for DC Series Arc Fault Modeling in Photovoltaic Systems Open
DC series arc fault (DCSAF) in photovoltaic systems is a controversial issue owing to the challenges related to its modeling and protection. This article focuses on efficient models based on Schwarz model for DCSAF utilizing actual recorde…
View article: Protection framework for microgrids with inverter‐based DGs: A superimposed component and waveform similarity‐based fault detection and classification scheme
Protection framework for microgrids with inverter‐based DGs: A superimposed component and waveform similarity‐based fault detection and classification scheme Open
Since the penetration level of the inverter‐based distributed generations (IBDGs) into microgrids (MGs) is increasing, the protection issues of such networks have become more challenging. The present work aims to design a protection framew…
View article: Table of Contents
Table of Contents Open
Optimization of Three-Phase Feeder Load Balancing Using Smart Meters Optimisation de l'équilibrage de la charge d'une alimentation triphasée à l'aide de compteurs intelligents L. Alhmoud and W. Marji 18 Investigation on Connected System of…
View article: Stochastic Optimal Power Flow in Hybrid Power System Using Reduced-Discrete Point Estimation Method and Latin Hypercube Sampling
Stochastic Optimal Power Flow in Hybrid Power System Using Reduced-Discrete Point Estimation Method and Latin Hypercube Sampling Open
Stochastic nature of some input variables dictates the requisite of probabilistic analysis in power systems operation and planning. Wind generation is considered as a main source of intermittency in power systems due to the uncertain natur…
View article: Differential Protection Algorithm Founded on Kalman Filter-Based Phase Tracking
Differential Protection Algorithm Founded on Kalman Filter-Based Phase Tracking Open
Owing to the large magnitude of the inrush currents, the functionality of differential protection of power transformer may be threatened in correct discrimination between inrush and internal faults. This paper enhances the functionality of…
View article: A Sub-Cycle phase angle distance measure algorithm for power transformer differential protection
A Sub-Cycle phase angle distance measure algorithm for power transformer differential protection Open
Power transformer differential protection may confront mal-functioning in authentic discrimination between inrush and internal faults. To tackle the latter mal-functioning, a new two-stages algorithm based on phase content of the current s…
View article: Time‐varying frequency model for electric arc furnaces
Time‐varying frequency model for electric arc furnaces Open
Accurate modelling of the Electric arc furnace (EAF) is necessary to study its impact on the power systems. Here, a new model for the EAF is presented in which both non‐linearity and time‐varying characteristics are taken into account. The…
View article: Development of Nottingham Arc Model for DC Series Arc Modeling in Photovoltaic Panels
Development of Nottingham Arc Model for DC Series Arc Modeling in Photovoltaic Panels Open
This paper deals with driving effective DC series arc models from the original Nottingham arc model. The original Nottingham arc model has three constant parameters and suffers significant inaccuracy for modeling the series arc faults. To …
View article: Robust Islanding Detection in Microgrids Employing Rate of Change of Kinetic Energy Over Reactive Power
Robust Islanding Detection in Microgrids Employing Rate of Change of Kinetic Energy Over Reactive Power Open
This study tries to outline a comprehensive approach established on the kinetic energy of the distributed generations (DGs) for islanding mode detection in micro-grids. More specifically, the proposed index calculates the rate of change of…
View article: Prediction of wind farm reactive power fast variations by adaptive one-dimensional convolutional neural network
Prediction of wind farm reactive power fast variations by adaptive one-dimensional convolutional neural network Open
One of the prominent problems in wind farms is voltage flicker emission. To prevent flicker emission or mitigate the impact as best as possible, a static VAr compensator (SVC) is a great candidate both economically and technically. However…
View article: A robust stator inter-turn fault detection in induction motor utilizing Kalman filter-based algorithm
A robust stator inter-turn fault detection in induction motor utilizing Kalman filter-based algorithm Open
Today, due to the widespread utilization of Induction Motors (IMs) in different industries, their condition monitoring is of great importance. Concentrating on the failures of IMs, it has been acknowledged that the stator inter-turn faults…
View article: Fast GRNN-Based Method for Distinguishing Inrush Currents in Power Transformers
Fast GRNN-Based Method for Distinguishing Inrush Currents in Power Transformers Open
Differential protection, as the key protection element in the power transformers, has always been threatened with sending false trips subjected to external transient disturbances. As a result, differential protection needs an additional bl…