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Volume 2, Issue 3 March 2014

S.No. Title Page No.
01
POWER FLOW CONTROL WITH UPFC IN POWER TRANSMISSION SYSTEM
Author: Ms.Dolly P.Raut1, Asst.Prof.R.H.Adware2
Abstract: The objective of flexible AC transmission system (FACTS) are used to increase the capacity of transmission line, to control the flow of power in the transmission line as well as to improve the quality of active and reactive power. FACTS technology is being popularly used to enhance power system performance. A FACTS is a low environmental impact technology to rapidly enhancing reliability on a long term and cost effective basis. In this paper the performance analysis of Unified power flow controller (UPFC) for improving the power quality is presented .The UPFC is the novel concept which offer multiple compensation function for power transmission system . The UPFC allows flexible control of both active and reactive power flow on transmission line. In this paper the performance of UPFC with conventional system and with PI controller system is presented for improving power quality
001-005
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02
Optical Properties of polyvinylchloride / polymethylmethacrylate blends With Polyanilin
Author:Roaaramadan1, Ekramajaj2 , Ahmad Abass Hasan3
Abstract: The aim of the present work is concerned with the study of the optical properties of PVC/ PMMA blends with 0.02% of polyanilin at different ratio, were prepared with different concentration (%PVC, 75%PVC+25%PMMA, 25%PVC+75%PMMA, %PAMM) using Casting. Technique . The absorption spectra of PVC/PMMA blends at different concentration showed absorption changes in the wavelength range, which depends on the polymer type, and the concentration of the polymer blends. It was found that %PVC, %PMMA ratio from these polymers showed higher absorption values in comparison with the other blend. The optical energy gap(Eopt), real and imaginary parts of dielectric constants have been evaluated.
006-009
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03
NEURO CONTROLLED SEVEN LEVEL SHUNT ACTIVE POWER FILTER FOR POWER QUALITY ENHANCEMENT
Author: *G. Jayakrishna1, C.R.Hemavathi2, D. Manasa3
Abstract: This paper presents a Neuro controlled Hybrid Cascaded Seven-Level Inverter (HCSLI) used in shunt active power filter (SAPF) to improve power quality in medium voltage power system(PS). The HCSLI has merits of less harmonics, reduced number of switches and less loss. The SAPF compensates reactive power, improves power factor and suppresses the total harmonics distortion (THD) due to Non-Liner Diode Rectifier Load (NLDRL).The proposed control strategy for SAPF includes Constant Switching Frequency Multicarrier Sub-Harmonics Pulse Width Modulation (CSFMSHPWM) method for controlling the switches of HCSLI, Neuro Controller (NC) for capacitor DC voltage regulation and d-q theory for obtaining the reference compensation currents for SAPF. The results are validated through MATLAB simulation with SAPF and without SAPF at various load conditions
010-018
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