scholarly journals Determination of Total Harmonic Distortion (THD) on a 33kv Distribution Network: A Case Study of Island Business District

2015 ◽  
Vol 34 (4) ◽  
pp. 773
Author(s):  
LM Adesina ◽  
OA Fakolujo
Keyword(s):  
Distribution Network ◽  
Harmonic Distortion ◽  
Total Harmonic Distortion ◽  
Business District

Restraint Method of Voltage Total Harmonic Distortion in Distribution Network by Power Conditioner Systems using Measured Data from IT Switches

2011 ◽  
Vol 131 (12) ◽  
pp. 936-944 ◽  
Author(s):  
Shoji Kawasaki ◽  
Kazuki Shimoda ◽  
Motohiro Tanaka ◽  
Hisao Taoka ◽  
Junya Matsuki ◽  
...  
Keyword(s):  
Distribution Network ◽  
Harmonic Distortion ◽  
Measured Data ◽  
Total Harmonic Distortion ◽  
Power Conditioner

scholarly journals Optimal Allocation of Active Power Filter On real distribution network for improvement of power quality by use of BBO: A case study

2017 ◽  
Vol 18 (1) ◽  
pp. 85-99 ◽  
Author(s):  
Emad Samadaei ◽  
Alireza Khosravi ◽  
Abdolreza Sheikholeslami
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Optimal Allocation ◽  
Distribution Network ◽  
Harmonic Distortion ◽  
Active Power Filter ◽  
Active Power ◽  
Harmonic Compensation ◽  
Power Filter

ABSTRACT:  According to development of power electronics device, harmonic distortion spread on the network. Thus harmonic is a threat for instrument, network, decreasing of line capacity and etc. Active power filter (APF) can be employed for harmonic compensation in power systems. In this paper a distorted distribution feeder is considered and analyzed from power quality viewpoint using power analyzer device and simulated in MATLAB-Mfile. Then the size and place of active power filters are determined by use of Biogeography Based Optimization (BBO). The goal of this optimization is minimizing of losses and total harmonic distortion (THD) in feeder by considering economical cost.  The performance of the approaches are assessed and appreciated by a case study on the Ghaemshahr-Iran Distribution network. Measurement is done on the city network by power analyzer CA8310. All data was collected on Computer. Then researcher algorithm BBO, it is selected the best place and size for Active power filter. The results show a good performance.

scholarly journals Calculation of Optimal Switching Angles for a Multilevel Inverter Using NR, PSO, and GA- a Comparison

2020 ◽  
Vol 22 (4-5) ◽  
pp. 349-355
Author(s):  
Manuel Marín-Reyes ◽  
Jesus Aguayo-Alquicira ◽  
Susana Estefany De León-Aldaco
Keyword(s):  
High Performance ◽  
Pulse Width Modulation ◽  
Modular Design ◽  
Renewable Energy Sources ◽  
Harmonic Distortion ◽  
Optimization Methods ◽  
Industrial Sector ◽  
Total Harmonic Distortion ◽  
Multilevel Inverters

Currently, multilevel inverters have been increased the number of applications in the industrial sector and renewable energy sources. Among its characteristics, the most remarkable are modular design, high performance, and low harmonic distortion in the output voltage waveform. For this paper, a single-phase Cascade H-Bridge Multilevel Inverters (CHB-MLI or CMLI) topology with independent DC sources, has been selected for the case study. Analyzing three scenarios: 5-level, 7-level, and 9-level applying the concept of the Optimized Harmonic Stepped-Waveform (OHSW) and comparing the results between the Selective Harmonic Eliminated-Pulse Width Modulation (SHE-PWM) and the Optimal Minimization of the Total Harmonic Distortion (OMTHD) are also presented. To compare the results obtained with classical and nature-inspired optimization methods, three techniques are used to solve transcendental nonlinear equations for the problem of Total Harmonic Distortion (THD) minimization: Newton Raphson (NR), Genetic Algorithm (GA), and Particle Swarm Optimization (PSO), which have been widely used for the problems of THD minimization in multilevel inverters.

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