In recent years, with the widespread use of non-linear loads power electronic devices associated penetration various renewable energy sources, distribution system is highly affected by harmonic distortion caused these sources. Moreover, inverter-based distributed generation units (DGs) (e.g., photovoltaic (PV) and wind turbine) that are integrated into systems, considered as significant sources severe harmful effects on quality. To solve issues, this paper proposes a mitigation method for...

The output generations of renewable energy sources (RES) depend basically on climatic conditions, which are the main reason for their uncertain nature. As a result, performance and security distribution systems can be significantly worsened with high RES penetration. To address these issues, an analytical study was carried out by considering different penetration strategies in radial system. Moreover, bi-stage procedure proposed optimal planning first stage concerned calculating locations...

The penetration of renewable energy sources (RESs) in distribution systems faces many issues due to their output uncertainty resulted from climate conditions. impacts on the voltage fluctuations are reduced by using a proposed bi-stage method. At first, system is controlled determining optimal setting voltage-regulating devices such as regulators, transformer tap changers and static VAR compensator. Then, dispatchable distributed generation (DDGs) units accompanied regulating achieve more...

This paper presents a proposed method to allocate the distributed generation (DG) units on distribution networks using cat swarm optimization algorithm. The finds optimal placement and sizing of DG units. objectives problem are minimizing: total costs, power losses, emissions produced by improving voltage stability. depends (CSO) algorithm parallel (PCSO) methods tested IEEE 33-bus 69-bus systems. results these algorithms compared other previous that reported in this field. considered...

Abstract High penetration of Renewable Energy Sources into unbalanced distribution systems faces many challenges due to the uncertainty nature both and loads as well unbalance degree systems. This paper proposes planning in Different types Sources, photo‐voltaic Wind are considered. A multi‐objective optimisation problem is formulated using non‐dominated sort crowing distance for multi objective hybrid algorithm that combines merits Particle Swarm Optimisation Sine Cosine algorithms. Three...

Abstract Designing highly adsorptive materials for wastewater treatment via facile approaches is still challenging. To boost the recovery of heavy metals from wastewater, surface and structure modification are considered a successful route. Herein, we report design ZnO nanoparticles by simple thermal decomposition method followed grafting Cu (Cu NPs) over surface. Cu/ZnO was prepared with different ratios, 0.01 1%. It found that incorporating into improved porosity area ZnO. The adsorption...

Power system operation and planning studies face many challenges with increasing of renewable energy sources (RESs) penetration. These revolve around the RESs uncertainty its applications on probabilistic forecasting, power optimization planning. This paper proposes a novel effective criterion for uncertainties modeling as well loads. Four sorting stages are applied proposed cases reduction. Added to that, it three different reduction strategies obtaining accuracy speed options. The tested...

Single tuned harmonic filters (STFs) are widely used in distribution systems order to mitigate the distortion and attenuate its undesirable effects systems. This paper presents a comprehensive parametric analysis for STF study impact of filter parameters on performance. While changing parameters' values such as quality factor, frequency size, impedance-frequency characteristics curve can be affected. Also, this studies effect system pass_band that mitigate. Therefore, presented help...

The rapid growth of electric vehicles (EVs) poses challenges for the existing distribution networks, necessitating strategic planning optimal placement charging stations. Thus, enhancing allocation EV stations in medium voltage (MV) networks is significant promoting widespread adoption and ensuring efficient infrastructure. From this point, paper presents an procedure EVs' station systems. Also, different renewable energy resources (RESs) as distributed generators (DGs) are incorporated...

Partitioning large-scale smart distribution systems into multiple microgrids (MG) are considered an effective solution to maintain system reliability and improve the power restoration under emergency conditions. The partitioning planning process faces many challenges especially if uncertain nature of both renewable energy resources (RERs) loads, unbalanced operation considered. In this paper, active is handled through a proposed three stages method. method presents parallel for sources...

The current study investigated the effectiveness of using digital storytelling based instruction in developing 1 st preparatory stage pupils' some EFL listening comprehension skills and attitudes toward English language.The participants were 64 first year pupils enrolled at Om Elmomenin Preparatory school, Menouf Distinct, Menoufia Governorate during second semester 2021-2022 academic year.The divided into two groups: experimental control (32 each).The group taught instruction, while...

The current study investigated the effectiveness of using cartoon films in developing primary school pupils' EFLwriting skills.The participants comprised 60 pupils .They were drawn randomly from fourth year enrolled stage, at Qombainyat for boys and girls, EL Sadat Educational Directorate, Menouifa governorate ,during first semester academic 2020-2021.The divided into two groups: experimental control,30 each.After pretesting, group received writing skills through while control regular...

Background Energy imbalance is common among patients with end-stage renal disease. Altered circulating irisin level may occur in disease and result energy dysfunction. Aim To estimate serum as a diagnostic marker for the protein-energy wasting syndrome chronic kidney (CKD) its relation glomerular filtration rate. Patients methods This case–control study. It was carried out at Internal Medicine Department of Al-Zahraa University Hospital Damanhur Fever from March 2018 to 2020. study included...