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International Journal of Applied Power Engineering (IJAPE)

IJAPE
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Published by Institute of Advanced Engineering and Science

ISSN : 22528792 EISSN : 27222624 DOI : -

Core Subject : Engineering,

Electrical & Electronics Engineering

International Journal of Applied Power Engineering (IJAPE) focuses on the applied works in the areas of power generation, transmission and distribution, sustainable energy, applications of power control in large power systems, etc. The main objective of IJAPE is to bring out the latest practices in research in the above mentioned areas for efficient and cost effective operations of power systems. The journal covers, but not limited to, the following scope: electric power generation, transmission and distribution, energy conversion, electrical machinery, sustainable energy, insulation, solar energy, high-power semiconductors, power quality, power economic, FACTS, renewable energy, electromagnetic compatibility, electrical engineering materials, high voltage insulation technologies, high voltage apparatuses, lightning, protection system, power system analysis, SCADA, and electrical measurements.

Arjuna Subject : -

Articles 530 Documents

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Compensation of Single-Phase and Three-Phase Voltage Sag and Swell Using Dynamic Voltage Restorer Haniyeh Marefatjou; Mohammad Sarvi
International Journal of Applied Power Engineering (IJAPE) Vol 1, No 3: December 2012
Publisher : Institute of Advanced Engineering and Science

DVR is a equipment which was connected in series and adjusting the loading voltage by feeding the voltage in system. The first installation was in 1996. usually DVR installed between sensitive loads feeder and source in distribution system .The main duty, fast support load voltage (by fast detection algorithm) during disturbance to avoid any disconnection. in this paper approaches to compensate for voltage sag and swell as a common disturbance in voltage transmission and distribution networks is presented. A dynamic voltage restorer based on the dq0 algorithm for three-phase and dynamic voltage restorer based on the average detection method for single-phase are discussed, also in this paper we compare the two methods used to compensate the single-phase and three-phase process. result of three-phase and single-phase voltage sag and swell simulation has been presented by MATLAB/SIMULINK.

Faults detection and diagnoses of permanent magnet synchronous motor based on neuro-fuzzy network Hashmia Sh. Dakheel; Zainab B. Abdulla; Helen Jassim Jawad
International Journal of Applied Power Engineering (IJAPE) Vol 8, No 2: August 2019
Publisher : Institute of Advanced Engineering and Science

Faults in electrical machine are very important in order to improve the machine expensive maintenance, efficiency, life time, and reliability at real time, therefore this study deals with Simulink model response for healthy and neuro-fuzzy network (ANFIS), this intelligent technique consist of two parts, the first part include electrical and demagnetization faults while another part deals with mechanical faults. Simulation results obtain record activation, high performance, and efficiency of this network.

Probabilistic Q-margin Calculations Considering Dependency of Uncertain Load and Wind Generation Jung-Uk Lim
International Journal of Applied Power Engineering (IJAPE) Vol 2, No 3: December 2013
Publisher : Institute of Advanced Engineering and Science

This paper presents a novel probabilistic approach for computation of the reactive power margin (or Q-margin) of a power system with large-scale uncertain wind generation. Conventionally, Q-margin has been used as an index for indicating the system voltage stability level on system operation and planning. The conventional Q-margin method needs to be modified to fully accommodate uncertainties due to wind generation. This paper proposes a new Q-margin computation method using Q-matrix and the expected Q-margin (EQM). Q-matrix is a generic uncertainty matrix representing a discrete joint distribution of load and wind generation and the EQM, calculated from the Q-matrix, is a specific probabilistic variable that supersedes the conventional Q-margin. The proposed method is verified with the IEEE 39-bus test system including wind generation.

Standalone hybrid power system using homer software optimal case sizing of ferraguig (North West of Algeria) B. Afif; B. Merabet; A. Benhamou; A. Chaker
International Journal of Applied Power Engineering (IJAPE) Vol 8, No 3: December 2019
Publisher : Institute of Advanced Engineering and Science

Rural areas suffer from high costs of grid extensions obliging institutions to provide for other remedies for consumers, like using generators (GE) diesel often considered as economic and reliable solutions, but at the detriment of some order environment pollution and users convenience. Furthermore, the continuous decline in GEs prices based on a renewable energy (RE) and the increasing reliability of these systems have lead to a greater use of renewable energy sources for power generation in remote areas. A property which limits the use of renewable energy is related to the variability of resources. Fluctuations in load according to annual or daily periods are not necessarily correlated to the resources. In remote areas, the preferred option is the coupling between multiple sources, such as wind turbines and solar panels, this coupling is called hybrid power system. Algeria’s geographic location presents several advantages for the development and use of renewable energy, namely, solar energy and wind energy. In addition, Algeria has huge deposits of natural gas, 98% electricity comes from gas. Therefore, currently, the production of electricity from renewable energies primarily depends on their competitiveness with economic gas. Studied technological feasibility and economic viability of the hybrid system (PV/fuel) electrification project in a school located in Ferraguig succeed to reduce high costs, energy dependence, fuel supply problem, complicated/expensive maintenance, low lifetime, impossibility of 24 hours electricity production and waste oil management issues, by using renewable energy. HOMER model is used here to size a proposed system and determine an optimum configuration.

Modeling and Simulation of SVPWM Based Application Ashish Porwal; Ketan Baria; Anuradha Deshpande
International Journal of Applied Power Engineering (IJAPE) Vol 3, No 2: August 2014
Publisher : Institute of Advanced Engineering and Science

Recent developments in power electronics and semiconductor technology have lead to widespread use of power electronic converters in the power electronic systems. A number of Pulse width modulation (PWM) schemes are used to obtain variable voltage and frequency supply from a three-phase voltage source inverter. Among the different PWM techniques proposed for voltage fed inverters, the sinusoidal PWM technique has been popularly accepted. But there is an increasing trend of using space vector PWM (SVPWM) because of their easier digital realization, reduced harmonics, reduced switching losses and better dc bus utilization. This project focuses on step by step development of SVPWM technique. Simulation results are obtained using MATLAB/Simulink software for effectiveness of the study.

Analysis of Solar Radiation Availability for Deployment of Solar Photovoltaic (PV) Technology in a Tropical City Olatona G. I; Adegoke C. W
International Journal of Applied Power Engineering (IJAPE) Vol 4, No 1: April 2015
Publisher : Institute of Advanced Engineering and Science

The sunshine hours and solar radiation data for Ibadan (7° 30´ N, 3° 54´ E.), South West Nigeria in the last twenty years was analyzed, with a view to determining the abundance of solar energy available for deployment of solar photovoltaic (PV) technology applications. The measured solar radiation and actual sunshine hour data were obtained from International Institute of Tropical Agriculture (IITA), Ibadan. The data were analyzed using the statistical package of „origin 7‟ software. The maximum of 16.1MJm-2day-1 and minimum of 10.71MJm-2day-1 occurred in months of May and August respectively while the actual sunshine hour variation follows the same general trend but with the maximum of 6.99hrs in February and a minimum of 2.37hrs in August. At the current solar-to-electric conversion efficiency of 10%, the minimum solar radiation of 10.71MJm-2day-1 can supply a 1.0m2 solar panel a minimum of 44.6KWhr of Energy. Thus an abundance of solar energy has been established at Ibadan which in recent times has been witnessing incessant power outages from the national grid and thereby can contribute significantly to efforts in improving power supply mix. This implies that solar energy technology can thrive not only at Ibadan but in the whole of South West of Nigeria. Evidence of viability of PV technology in this area also abounds in the success of Solar Water Pumping stations recently installed by Government Agencies such as Ogun-Osun River Basin Development Authority (ORBDA) and the Millennium Development Goal (MDG) programmes in the area and environs.

Z- Source Inverter Based Dynamic Voltage Restorer for the Mitigation of Voltage Sag/Swell K. Prameela; D. Vijay Kumar; B. Trinadha
International Journal of Applied Power Engineering (IJAPE) Vol 5, No 2: August 2016
Publisher : Institute of Advanced Engineering and Science

This paper uses super capacitor as the energy storage device for the DVR to compensate voltage sag, voltage swell and harmonics due to addition of nonlinear load in the distribution line. Based on this topology, DVR consist of super capacitor, z source inverter and injection transformer. Super capacitor produces the necessary dc voltage which is given as the input voltage to the z-source inverter; provide the necessary injecting voltage, which has to be restored. A new topology based on Z-source inverter is presented in order to enhance the voltage restoration property of dynamic voltage restorer. Z-source inverter would ensure a constant DC voltage across the DC-link during the process of voltage compensation. The modeling of Z-source based dynamic voltage restorer is carried out component wise and their performances are analyzed using MATLAB software

New Optimization Method of the MPPT Algorithm and Balancing Voltage Control of the Three-Level Boost Converter (TLBC) Hassan Abouobaida; Said El Bied
International Journal of Applied Power Engineering (IJAPE) Vol 6, No 2: August 2017
Publisher : Institute of Advanced Engineering and Science

This paper is dedicated to studying the control of the Three Level Boost Converters (TLBC) and the optimization method of Maximum Power Point Tracking (MPPT) based a variable step. The main objective of the optimization is to find a compromise between the response time and the amplitude of the oscillations around the optimal point. The nonlinear behavior of the TLBC is manifested by the presence of the disturbances. For reasons of simplicity of the control, a linearization based on the dynamic compensation of the disturbance is proposed. On the one hand, a cascaded MPPT algorithm and a simple linear regulator allow adjusting the inductance current and a maximum power operation of the wind system. On the other hand, a second linear regulator ensures balancing of the output voltages. The paper proposes a new approach to the optimization of the Inc-Cond MPPT. The suggested contribution consists of using an exponential function of the power derivative to develop a variable step. The adoption of the variable step size according to the dynamics of the wind system implies a compromise between the response time and the amplitude of the ripples around the optimal point. The simulation results showed that a variable step size, especially in transient conditions and during a very rapid climate change recover the optimum power point within a reasonable time and suitable amplitude of the oscillations. The results achieved in this study show the ability of the proposed approach to extract the maximum power according to the available wind speed while guaranteeing a better efficiency. The developed study is summarized by the following points: (a) modeling the wind conversion systems, (b) detailing the control approach of the TLBC and presenting the variable step method (c) presenting the simulations results and evaluating the perf.

A Fault Detection Technique for Series-compensated Lines by TCSC during Power Swing Saeed Rezaei; Mojtaba Khederzadeh; Majid Gandomkar
International Journal of Applied Power Engineering (IJAPE) Vol 7, No 1: April 2018
Publisher : Institute of Advanced Engineering and Science

The performance of a distance relay is very susceptible to power swing. In order to avoid generating unwanted trip in such condition, a power swing block function (PSB) is used in distance relays. However, if a fault occurs in power swing condition, the relay should distinguish the fault from power swing and generate trip rapidly. Detection a fault in a series-compensated line by Series Capacitor (SC) during the power swing is more complicated than in an uncompensated line due to complex transients generated by series capacitor and the Metal–Oxide Varistor (MOV) operation. In a series-compensated line by TCSC, it is further complicated due to nonlinear variation of compensation level during power swing and fault, moreover, non-unique application mode of TCSC for different faults which is dependent on fault current. This paper examines a method based on negative sequence current to detecting all types of fault during power swing in a series-compensated line by TCSC. The method is tested for different TCSC-compensated power systems include SMIB and 9-bus 3-machine systems. Different types of faults, i.e., symmetrical, asymmetrical and high resistance faults occurring during a power swing are simulated by MATLAB/SIMULINK to examine the algorithm.

Design and Simulation Analysis of Three-Phase Transformer Less Grid-Connected PV Inverters Jayanna Kanchikere; A. K. Ghosh; Kalyankumar Kalyankumar
International Journal of Applied Power Engineering (IJAPE) Vol 7, No 3: December 2018
Publisher : Institute of Advanced Engineering and Science

Three-stage transformer less inverter is broadly utilized as a part of low power photovoltaic (PV) framework associated frameworks because of its little size, high proficiency and ease. At the point when no transformer is utilized as a part of a framework associated photovoltaic (PV) framework, a galvanic association between the lattice and PV exhibit exists. In these conditions, perilous spillage streams (basic mode ebbs and flows) can show up through the stray capacitance between the PV cluster and the ground. The previous, keeping in mind the end goal to make a galvanic separation between the info and the yield incorporate a transformer (obligatory in a few nations) that restrains the entire framework exhibitions as far as effectiveness, weight, size and cost. Actually, transformer less inverters don't present any separation and are described by minimal size, bring down cost and higher effectiveness (over 2% higher). In any case, the absence of transformers prompts spillage streams that can be hurtful to the human body, and in addition for the entire transformation framework uprightness. With a specific end goal to keep away from the spillage streams, different Transformer less inverters have been proposed utilizing diverse topologies to create consistent regular mode voltage. In this paper, different as of late proposed transformer less PV inverters are researched. Their exhibitions are thought about and broke down.

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