Transcription of Power Flow Analysis and Voltage Control using Simulator
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Power Flow Analysis and Voltage Control using Simulator
I7-1 2008 PowerWorld CorporationPower Flow Analysis and Voltage Control using Simulator Formulation of the Power flow problem Newton s method for solving the Power flow Description of the PowerWorld Simulator Options Dialog accessed from the Optionsribbon tab, Simulator Options button. Explanation of Voltage -related controls generator AVR transformer taps switched shunts I7-2 2008 PowerWorld CorporationOverall Simulator Solution Methodology Simulator actually uses THREE nested loops to solve the Power flow MW Control Loop Voltage Controller Loop Inner Power Flow loopTraditionally called the Power FlowSolutionVoltage Control Loop also covered in this sectionMW Control Loop also covered laterI7-3 2008 PowerWorld CorporationFormulation of Power Flow: Inner Power Flow Loop Goal is to solve the nonlinear Power balance equations for all system buses For an n bus Power systemI = YbusVwhereI = complex vector of current injection at all busesV = complex vector of Voltage at all busesYbus= complex n by n bus admittance matrixI7-4 2008 PowerWorld CorporationNonlinear Power Flow Equations Complex nonlinear Power balance equationsS* = V* IS* = V* YbusV Convert to 2(n-1) real equationsS = g(x) or f(x) = 0whereS = 2(n-1) Power injectionsx = 2(n-1) Voltage magnitudes and anglesI7-5 2008 PowerWorld Cor
Power Flow Analysis and Voltage Control using Simulator ... – MVA Convergence Tolerance • the tolerance for the inner power flow loop • Must be larger than zero ... • Self-Sensitivity Only looks at each transformer individually and determines the sensitivity of its regulated
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