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PowerWorld Transmission Line Parameter Calculator Version 2 IntroductionThe PowerWorld Transmission Line Parameter Calculator (TransLineCalc) is a tool designed to compute characteristic line parameters given the type of the conductor and the tower configuration of a three-phase overhead transmission line.The parameters computed are the resistance R, reactance X, susceptance B, and conductance G. These values are computed as distributed (per unit of distance), lumped or total (for a specific line distance), and in per-unit.PowerWorld provides TransLineCalc as a stand-alone program (.exe file) and also as an automation server that can run from PowerWorld Simulator directly or from an external application (.dll file).2001 South First StreetChampaign, IL 61820, USA(217) 384-6330www.powerworld.comsupport@powerworld.com
Transmission Line Parameter Calculator Version 2April 22, 2013 ii©PowerWorld CorporationTable of Contents1FEATURES ........................................................................................................................................................ 11.1CALCULATIONS ........................................................................................................................................... 11.1.1Parameters Calculation ......................................................................................................................... 11.1.2Ampere to MVA Limit Conversion ......................................................................................................... 31.1.3Reverse Lookup ...................................................................................................................................... 31.2CONDUCTOR TYPE ...................................................................................................................................... 51.2.1Edit By Form.......................................................................................................................................... 51.2.2Edit By Table ......................................................................................................................................... 51.3TOWER CONFIGURATION ............................................................................................................................. 71.3.1Edit By Form.......................................................................................................................................... 71.3.2Edit By Table ......................................................................................................................................... 71.4DATABASE CONTROLS ................................................................................................................................ 92AUTOMATION SERVER .............................................................................................................................. 102.1COMOBJECT INITIALIZATION AND DESTRUCTION ................................................................................... 102.2METHODS OF THE SIMAUTO OBJECT ......................................................................................................... 112.2.1SetParameters ...................................................................................................................................... 112.2.2GetParametersPU ................................................................................................................................ 112.2.3GetParametersLumped ........................................................................................................................ 123CALCULATIONS ........................................................................................................................................... 133.1DISTRIBUTED PARAMETERS ...................................................................................................................... 133.2LUMPED (TOTAL)PARAMETERS ................................................................................................................ 153.3BASE VALUES ........................................................................................................................................... 163.4PER UNIT (PU)PARAMETERS .................................................................................................................... 173.5MVATO AMPERE AND AMPERE TO MVALIMITS CONVERSION .............................................................. 174REFERENCES ................................................................................................................................................. 17