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85 articles for “the transmission line”
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Research ArticleOpen accessEvery word in the titleNumerical Simulation of the Transient Flow in Natural Gas Transmission Lines Using a Computational Fluid Dynamic MethodPedram Ghaseminejad, Nikan NoorbeheshtUntil now, almost all tools that are used to analyze gas transportation networks are based on steady flow conditions. Some design problems can be solved by the assumption of a steady state. However, some circumstances force us to use transient analyses, which commonly include changes in customer demand, the failure of a compressor station or gas pipeline ruptures. In this … …American Journal of Applied Sciences, Vol. 10, Issue 1 · 6 Jan 2013 · 7,457 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleVoltage Stability of Medium Transmission Line Equipped with a Thyristor Controlled Series CapacitorPrechanon KumkratugProblem statement: Power-Voltage curve provides very important information for voltage stability analysis. The exact medium transmission line model consists of the resistance and the reactance. The resistance causes in the active line loss. It is not an easy task to achieve the power-voltage curve characteristics of power system with the exact medium line model equipped with a. Thyristor Controlled Series … …American Journal of Applied Sciences, Vol. 9, Issue 10 · 16 Aug 2012 · 7,021 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Mathematical Model and Simulation of Static Var Compensator in Medium Transmission LinePrechanon KumkratugProblem statement: The Static Var Compensator (SVC) have been widely investigated its effect on transient stability of Single Machine Infinite Bus (SMIB) system. The exact medium transmission line model in power system consists of the series resistance series reactance and shunt capacitance. It is not easy task to obtain the mathematical model of the SVC with the exact medium transmission … …American Journal of Applied Sciences, Vol. 9, Issue 5 · 12 Mar 2012 · 7,393 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Mathematical Model of Power System with Thyristor Controlled Series Capacitor in Long Transmission LinePrechanon KumkratugProblem statement: It is becoming increasingly important to fully utilize the existing transmission system assets due to environmental legislation, rights-of-way issues and 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 long transmission line model consists of the … …American Journal of Applied Sciences, Vol. 9, Issue 5 · 27 Feb 2012 · 6,833 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Mathematical Model and Simulation of Thyristor Controlled Series Capacitor in Medium Transmission LinePrechanon KumkratugProblem statement: It 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 medium transmission line model consists of the resistance … …American Journal of Applied Sciences, Vol. 9, Issue 4 · 9 Feb 2012 · 7,718 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Effect of Thyristor Controlled Series Capacitor on Transient Stability of Single Machine Infinite Bus System with the Exact Short Transmission Line ModelPrechanon KumkratugProblem statement: It 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 were introduced in recent years. The Thyristor Controlled Series Capacitor (TCSC) has been proposed for better control power flow and dynamic performance. The exact short transmission line model consists of the resistance … …American Journal of Applied Sciences, Vol. 9, Issue 3 · 2 Feb 2012 · 7,466 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleTransient Stability of the Power System with the Exact Long Transmission Line ModelPrechanon KumkratugProblem statement: The exact long transmission line model consists of the lump of the series resistance, reactance and shunt capacitance. With the consideration the actual long transmission line model, it causes in the difficulty of deriving the mathematical model. Approach: This study investigates the transient stability of power system with consideration the exact long transmission line model. The concept of … …American Journal of Applied Sciences, Vol. 9, Issue 3 · 24 Jan 2012 · 6,853 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Effect of R/X Ratio of the Short Transmission Line on Transient StabilityPrechanon KumkratugProblem statement: The exact short transmission line model consists of the resistance and reactance. Most of previous researches study the transient stability of single machine infinite bus with neglecting the resistance of the line. Thus the simulation results may not close to the practical system. With the consideration with the actual short line model, it causes difficulty of deriving the … …American Journal of Applied Sciences, Vol. 9, Issue 3 · 24 Jan 2012 · 8,057 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleInvestigating the Critical Clearing Time of Power System with the Exact Medium Transmission Line ModelPrechanon KumkratugProblem statement: The exact medium transmission line model consists of the resistance, series reactance and shunt capacitance. Most of previous research studies show the critical clearing time of single machine infinite bus while neglecting the resistance and capacitance of the line. Approach: This study investigates the critical clearing time of power system with consideration the exact medium transmission line mode. … …American Journal of Applied Sciences, Vol. 9, Issue 3 · 23 Jan 2012 · 7,411 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFast Decoupled Power Flow for Power System with High Voltage Direct Current Transmission Line SystemPrechanon KumkratugProblem statement: High voltage direct current transmission line system has been widely applied for control power flow in power system. The power flow analysis was the one of powerful tools by which the power system equipped was analyzed both for planning and operation strategies. Approach: This study presented the method to analyze power flow of power system consisted of HVDC … …American Journal of Applied Sciences, Vol. 7, Issue 8 · 31 Aug 2010 · 7,010 accessesView PDFCite