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249 results for “Voltage”
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Research ArticleOpen accessEvery word in the titleFuzzy Based Digital Automatic Voltage Regulator of a Synchronous Generator with Unbalanced LoadsA. Darabi, S.A. Soleamani, A. HassanniaVoltage stability and power quality of the electrical systems depend on proper operation of the Automatic Voltage Regulators (AVR) of generators. Nowadays, design technology of the AVRs is being broadly improved. According to wide range operating conditions of the generators and loads, the fuzzy AVRs are going to be the modern type of regulators, particularly, for the genset alternators operating … …American Journal of Engineering and Applied Sciences, Vol. 1, Issue 4 · 31 Dec 2008 · 7,602 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleLightning Over-Voltages on Amman-Aqaba 400 KV LineGhassan Halasa, Ibrahim Badran, Hafez El-ZayyatAn attempt is made to evaluate the lightning over-voltage failure rate for Amman- Aqaba 400kV transmission line by studying the geographical and temporal characteristics of lightning causing the line forced outages. The line was divided into three sections based on weather and pollution conditions. It was found that the line failure rate due to lightning over-voltages is low compared to … …American Journal of Applied Sciences, Vol. 4, Issue 12 · 31 Dec 2007 · 6,632 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA Bipolar Cockcroft-Walton Voltage Multiplier for Gas LasersShahid Iqbal, Rosli BesarA bipolar Cockcroft-Walton voltage multiplier (CWVM) is proposed as an attractive alternative to the symmetrical Cockcroft-Walton voltage multiplier for continuous wave gas lasers (e.g. carbon dioxide gas laser). The proposed CWVM formed by combining positive and negative voltage multipliers consisting of equal number of stages and driving in parallel by an ac voltage source. The proposed voltage multiplier needs only … …American Journal of Applied Sciences, Vol. 4, Issue 10 · 31 Oct 2007 · 8,270 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleSimulation, Design and Construction of High Voltage DC Power Supply at 15 kV Output Using Voltage Multiplier CircuitsN. Mariun, D. Ismail, K. Anayet et al.This study describes the details of high voltage DC power supply whose output voltage is 15 kV. In this study, we review the major aspects of the design of voltage multiplier circuits and constructed a prototype power supply based on simulation, design and implementation of the hardware works in the laboratory. Its simulation works done by using EMTDC PSCAD and … …American Journal of Applied Sciences, Vol. 3, Issue 12 · 31 Dec 2006 · 7,205 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleSimulation of Voltage Stability and Alleviation Through Knowledge Based SystemA. Arunagiri, B. VenkateshModern power systems are large sized and rapidly growing. They require constant attention to monitor their performance. Attention is also required to ensure that the voltage stability margin of the power system is above a desired level. In order to achieve the objective, this study proposes a knowledge-based system. It computes using simple Fast De-Coupled Load Flow (FDLF), the state … …American Journal of Applied Sciences, Vol. 1, Issue 4 · 31 Dec 2004 · 6,816 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAnalysis of the Over-Voltages Produced by Lightning Strokes in the Power Transmission System in the Southern Region of Saudi ArabiaA. U. Al-Abdulaziz, S. M. Bashi, A. A. AlthubaitiThis study deals with the simulation of lightning strokes and their effects on power network in the southern region of Saudi Arabia. The network consists of main generating stations, substations and the power transmission lines. The transient performance of the system has been investigated using the EMTP (Electro Magnetic Transient Program). Some surges were introduced to the network as in … …American Journal of Applied Sciences, Vol. 3, Issue 3 · 31 Mar 2006 · 7,213 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA New Approach to Load Flow Analysis for Radial Distribution System - Application for Medium Voltage Distribution System in MoroccoSaad Ouali, Abdeljabbar CherkaouiThis paper presents a load flow algorithm based on the backward/forward sweep principle, flexible for radial distribution system reconfiguration, with an improvement in ensuring a minimum number of searching for connections between nodes in the calculation sequence in the forward and the backward sweep, by organizing the radial distribution system information into a Main-Line and its derivations. The proposed load … …American Journal of Engineering and Applied Sciences, Vol. 12, Issue 3 · 29 Jun 2019 · 8,393 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleElectric Field in Polymeric Isolators of the 500kV Voltage ClassVitor Chaves De Oliveira, Huederson Aparecido Botura Da Silva, Alexandre De Assis Mota, Lia Toledo Moreira MotaThis study presents a detailed study of the electric field in polymeric isolators of the 500kV voltage class through modifications in the dimensions of the anti-corona ring. That is, by varying the three dimensions of the anti-corona ring: height (h), distance of the anti-corona ring conductor (r) and the diameter of the anti-corona ring conductor (d); it was possible to … …American Journal of Applied Sciences, Vol. 10, Issue 6 · 12 Jun 2013 · 6,969 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleVoltage Stability of Short Transmission Line Equipped with a Thyristor Controlled Series CapacitorPrechanon KumkratugIt is becoming increasingly important to fully utilize the existing transmission system assets due to environmental legislation, rights-of-way issues, costs of construction and deregulation policies that introduced in recent years. The Thyristor Controlled Series Capacitor (TCSC) has been proposed for the better control power flow and dynamic performance. The exact short transmission line model consists of the resistance and reactance. … …American Journal of Applied Sciences, Vol. 9, Issue 12 · 8 Nov 2012 · 6,696 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDesign of Capacitance to Voltage Converter for Capacitive Sensor TransducerA.H.M. Zahirul Alam, Nurul Arfah, Sheroz Khan, Md. Rafiqul IslamProblem statement: The design of Capacitance to Voltage Converter (CVC) for capacitive sensor transducer was presented. The proposed design will reduce the size, power consumption and supply voltage of the circuit and can be used in high frequency band transducer. Approach: The design was implemented using the Operational amplifier (Op amp) and capacitive network. The circuit was simulated using the … …American Journal of Applied Sciences, Vol. 7, Issue 10 · 31 Oct 2010 · 8,436 accessesView PDFCite