Ali H. Kasem Alaboudy

• Associate Professor
• Professor (Associate) at Suez University

The paper addresses the ongoing and continuous interest in photovoltaic energy systems (PESs). In this context, the study focuses on an isolated photovoltaic system with hybrid battery-supercapacitor storage (HBSS). The integration of supercapacitors (SCs) in this system is particularly important because of their high specific power density. In pho...

As a key portion of renewable energy resources (RESs), wind energy penetration is rapidly deployed. The effects of grid faults on grid-connected wind turbines (WTs) are causing problems for wind energy producers. To meet the necessary requirements, additional resources and technical interventions are needed. One of these requirements is low voltage...

Recently, interest in incorporating distributed generators (DGs) into electrical distribution networks has significantly increased throughout the globe due to the technological advancements that have led to lowering the cost of electricity, reducing power losses, enhancing power system reliability, and improving the voltage profile. These benefits...

Microgrid (MG) is not only undergoing rapid upsurge and an effective combination of distributed generations (DGs)-based renewable energy sources, but it also fulfills a significant function in upgrading grid infrastructure. It is necessary for DGs, during and after any disturbances in the voltage, to stay connected in order to enhance the voltage,...

Fixed speed wind turbines (FSWTs) are still commonly used due to simplicity, robustness, and the life extension programs implemented by leading WT manufacturers. However, due to the sluggish behavior of squirrel cage induction generator (SCIG) during transient and abnormal conditions, complete and fast pre-fault restoration of grid connected FSWTs...

The modeling and testing of relays for transient effects was not a critical issue until the introduction of electronic and microcontroller-based relays. Electro-mechanical relays are less sensitive to power system transient effects. In this chapter, the transient behavior of relaying schemes protecting an induction generator connected to a wind tur...

In this chapter, an overview of the importance of renewable energy, and the wind energy background, wind energy conversion systems, and wind system topologies are presented. Wind energy, in particular, is reviewed with the protection requirement for induction generators in wind turbines, over-current protection devices, overload protection devices,...

In this chapter, the simulation is made using MATLAB/Simulink software for a complete grid-connected induction generator system. Each component is simulated and discussed in detail. The SCIG model was verified, and it gives almost typical results like the ones supplied by the datasheet. The different types of faults are applied and analyzed togethe...

In this chapter, we have provided a brief description of the devices and components that were used in programming the microcontroller for the book. An attempt at explaining the general working mechanisms, features, applications, and advantages of the system apparatus was made since without having a common idea of all the main components, it would b...

In this chapter, the problem of providing relay protection for a wind turbine–driven induction generator connected to a power system is investigated. The induction generator protection scheme and relay settings are described. It is assumed that the used relays are all digital (microcontroller-based). Different proposed relaying algorithms to be use...

The previous chapters presented in this book give theoretical study and simulation results of protection caused by constant-speed wind turbines. Besides, this chapter presents the experimental setup of SCIG-based constant-speed wind turbine. The various symmetrical and unsymmetrical faults and microcontroller-based of protection wind turbine genera...

The conclusions that have been reached in addition to the recommendations proposed to deal with the issue of protecting the generators of wind turbines based on the microcontroller from the theoretical and practical sides are presented in this chapter, in addition to the scientific analysis of the results obtained from both the simulation model on...

The increase in electricity demand places its focus on renewable energies as sustainable energy resources. Wind energy is one of the most important green energy sources. The doubly fed induction generator (DFIG) based wind farm has now gained prominence due to its many advantages, such as variable speed operation and autonomous control of active an...

The increase in electricity demand places its focus on renewable energies as sustainable energy resources. Wind energy is one of the most important green energy sources. The doubly fed induction generator (DFIG)-based wind farm has now gained prominence due to its many advantages, such as variable speed operation and autonomous control of active an...

This paper presents a shunt active power filter for power quality improvement of an Egyptian electrical network-connected wind energy system. In this paper, the shunt active power filter using hysteresis band current is controlled by proportional integral and is compared with shunt active power filter controlled by fuzzy logic control in order to i...

Power quality (PQ) assurance is a vital part of electrical distribution networks. There are many advantages and benefits of improving PQ, especially in the modern/smart grid. Smart grid (SG) has a lot of complicated and sensitive electrical components (non-linear loads) in addition to renewable energy systems (wind-solar) that may also be a source...

Due to the increasing demand for electricity, Egypt as a nation of limited fossil fuels resources needs to diversify power generation portfolio by integrating renewable energy resources. In fact, wind energy has a great potential due to its economic efficiency as demonstrated by Egypt's wind atlas. This paper presents an overview of the feasibility...

Microgrid (MG) gains higher potential and plays a key role in grid infrastructure upgrade. Although MG have many benefits, its performance during fault caused islanding conditions still needs more attentive investigations. In this context, the MG load types and the behavior of the distributed generations (DGs) control system have the significant im...

This paper addresses the development of the hybrid fault current limiter and interrupting device (HCLID) which can be used successfully as an ultra-fast short-circuit protection means for low voltage AC or DC industrial installations. The main components of the HCLID are as follows: a solid state commutation circuit that can supply a counter curren...

Microgrids (MGs) are one of the most feasible structures that accommodate the increased penetration of the intermittent renewable distributed energy sources. Enabling MGs with renewable energy sources is crucial to meet the environmental concerns, and get economic benefits and reliability requirements. This paper details the effect of control strat...

This paper presents a modified control strategy to improve the performance of a 3-phase induction motor drive system fed by a standalone PV power source. The main functions of the proposed control strategy are: 1) ensuring successful motor starting, 2) matching the on-site induction-motor pumping load with the available PV power, and 3) forcing the...

Microgrids (MGs) are one of the most feasible structures that accommodate the increased penetration of the intermittent renewable distributed energy sources. Enabling MGs with renewable energy sources is crucial to meet the environmental concerns, and get economic benefits and reliability requirements. This paper details the impact of control strat...

Matching the on-site induction-motor (IM) pumping loads with the given photovoltaic (PV) power for the most optimal operation using maximum photovoltaic power tracking (MPPT) technique with dynamic error driven PI controllers is introduced in this paper. A PV array subjected to constant and variable solar irradiations is designed to feed a water pu...

wind power generators represent a prominent facility for generating renewable and clean bulk power to utility grids.Double fed induction generator (DFIG)with partial size back-to-back converter becomes the common option for variable speed wind power generation.In this paper,control strategies of DFIG scheme is proposed to capture maximum wind power...

This paper describes the development of the hybrid fault current limiter and interrupting device "HCLID" which can be used successfully as an ultra-fast short-circuit protection means for-Medium Voltage Application. The main components of the HCLID are a solid-state commutation circuit that can supply a counter current injection from a stand-by pre...

In this paper, a PV array is used for water pumping purposes at remote or abandoned locations. Egypt is a developing country and largely depends on cultivation that won't be possible without water availability. This paper presents the performances of a PV pumping system based on an induction motor under variable solar irradiations and ambient tempe...

This paper presents a MATLAB/SIMULINK-based modeling and simulation scheme suitable for studying the I–V and P–V characteristics of a PV array under constant and variable solar irradiations and ambient temperatures. The PV array is connected with fluctuated dc resistive load. This work focuses on addressing the effect of the dc link capacitance on...

—During a change in operating condition, oscillations of small magnitude and low frequency often persist for long periods of time and in some cases even present limitations on power transfer capability. Generators in power systems are equipped with automatic voltage regulator (AVR) to control terminal voltage. It is known that AVR has a detrimental...

This paper presents fault response of squirrel cage induction generator through grid connected of wind power. Thus, the Squirrel Cage Induction Generator (SCIG) is connected to an infinite bus through delta grounded wye transformer, transmission line and load. The capacitance compensation will be installed. The simulation model of grid connected sq...

Accurate fault locator (FL) algorithms become an essential requirement to increase system reliability in modern utility grids. Several FL algorithms based on phasor measurement units (PMUs) have been developed in the last two decades. Among the most common approaches, two distinctive FL concepts (Novosel and Jiang) are detailed in this paper. The s...

Owing to the increasing penetration of decentralised generation, stable islanded microgrid operation is essential. Fault provoked islanding conditions may lead to unstable microgrid operation, particularly when direct connected induction motor (IM) loads are included. This study proposes a control strategy for inverter-based DG to support microgrid...

With the increased penetration of wind power, the influence of wind turbine generators on the grid power quality stipulates careful investigation and analysis. Direct driven permanent magnet synchronous generator (PMSG) with a back-to-back converter set is one of the promising technologies in wind power generation schemes. In this paper, comprehens...

In urban areas, underground cables are commonly used for bulk power transmission. The utilization of electricity in factories, domestic premises and other locations is typically performed by cables as they present the most practical means of conveying electrical power to equipment, tools and other different applications. Estimation of cable current...

With the increased penetration of wind power, the influence of wind turbine generators on the grid power quality stipulates careful investigation and analysis. Direct driven permanent magnet synchronous generator (PMSG) with a back-to-back converter set is one of the promising technologies in wind power generation schemes. In this paper, comprehens...

Anti-islanding protection is one of the main protection requirements for Distributed Generation (DG). Grid tied DG systems are equipped with an islanding detection method that is responsible for detecting the loss of mains in a timely manner in order to initiate DG disconnection. Frequency relays are commonly used in detecting an islanding conditio...

With the growing deployment of microgrids, it has become urgent to investigate the microgrid behavior during transient faults and subsequent islanding conditions. The load type and the manner in which distributed generations (DGs) are controlled can have substantial impacts on the dynamic performance of microgrids. In this paper, impacts of differe...

Wind energy conversion systems could produce more power fluctuations than other sources of generation, and, hence, voltage fluctuation is highly expected with wind power plants. This paper addresses the problem of voltage fluctuation caused by constant speed wind turbines that are based on induction generators. Comprehensive wind speed and wind tur...

Voltage fluctuation of grid connected wind turbines (WTs) raises certain restriction for wind power penetration levels. In this paper, a flicker mitigation algorithm is proposed for doubly fed induction generator (DFIG) based WTs. The mitigation algorithm is based on tuning the DFIG power factor according to the equivalent grid impedance seen at th...

In this paper, a new passive islanding detection method for grid-connected inverter-based distributed-generation (DG) systems is proposed. A statistical signal-processing algorithm known as estimation of signal parameters via rotational invariance techniques is used to extract new features from measurements of the voltage and frequency at the point...

Smart grids have become one of the important and challenging topics due to the numerous benefits it can bring to the power system. In this context, distributed generation (DG) is expected to play a significant role. The smart grid can have multiple configurations depending on the smart grid operating strategy and system conditions. In smart grids,...

This paper introduces a new optimal technique to estimate the PI gains for current regulated inverter control. The PI controller tuning is accomplished using bacterial foraging optimization (BFO) algorithm to reduce voltage and current harmonic distortions and comply with the local grid requirements and interconnection standards. Robust and decoupl...

Islanding detection is an essential protection requirement for distribution generation (DG). Antiislanding techniques for inverter-based DG are typically designed and tested on constant RLC loads and, hence, do not take into account frequency-dependent loads. In this paper, a new antiislanding technique, based on simultaneous P - f and Q - V droops...

Microgrids can be viewed as a group of Distributed Generation (DG) units with the capability of operating connected or isolated from the main grid. Most of the work conducted in the area of microgrids focused on developing new control schemes that can maintain the voltage and frequency within standard limits during grid connected and islanded mode...

Power variation, voltage fluctuation and resultant flicker are critical issues related to the integration of directly grid-connected constant-speed wind turbines. This study introduces a methodology to enhance the quality of the power and voltage, and minimise the flicker produced from constant-speed direct-connected wind turbines. The method uses...

Keeping the generators operating during transient grid faults becomes an obligation for the bulk wind generation units connected to the transmission network and it is highly desired for distribution wind generators. A proposed scheme is implemented to keep the wind-power DFIG operating during transient grid faults. Challenges imposed on the generat...

This paper introduces an improved strategy to increase the power production of wind turbines equipped with doubly fed induction generators (DFIGs) at low wind speed operation. The performance of DFIG-based wind turbines at low wind speeds, close to the cut in speed, is investigated. A modified control to extend the concept of maximum wind power tra...

The reactive power demand of the induction generator is significantly increased when the generator runs close to the rated operating point. The losses are increased due to the increased reactive power flow. Due to the limitation of converter ratings in the doubly fed induction generator (DFIG) system, power clipping may occur at turbine-rated condi...

This paper introduces a methodology to enhance the quality of the voltage and power produced from fixed-speed direct-connected wind turbines. The method uses an electrolyzer/fuel cell combination to be connected to the point of common coupling via limited rating converters. The control scheme is designed to keep the power ramp rate and voltage fluc...

Withstanding grid faults becomes an obligation for the bulk wind generation units connected to the transmission network and it is highly desired for distribution wind generators. In this paper, a proposed scheme is implemented for DFIG to keep it operating during transient grid faults. Challenges imposed on the generator configuration and the contr...

Power and voltage generated by a wind turbine are more variable than that produced by conventional generators. Therefore, with the increasing penetration of wind energy into the grid, it is very important to simulate precisely the wind turbine/grid interaction to evaluate voltage fluctuation and other power quality aspects. In this paper, the wind...

Electromagnetic interference effects of transmission lines on nearby metallic structures such as pipelines, communication lines or railroads are a real problem, which can place both operator safety and structure integrity at risk. The level of these voltages can be reduced to a safe value in accordance with the IEEE standard 80 by designing a prope...