1、 Reactive Power Optimization Considering UPFC InstallationName：。Major：Electrical EngineeringStudent Number:。CONTENTS01Backgrounds020304Device PrincipleCalculation ModelResults01BackgroundsBackgroundsResearch BackgroundsResearch ProblemResearch MethodsResearch Purpose02Device PrincipleFACTSAflexibleA
2、CtransmissionsystemAdjusting three main electrical parameters influencing power system:voltage,impedance and power angle.TCSC(Thyristor Controlled Series Compensation)；TCPS(Thyristor Controlled Phase Shifter)；UPFC(United Power Flow Controller)；HVDC(High Voltage Direct Current Transmission)；SVC(Stati
3、c Var Compensator)FACTSFunctionsVarietiesUPFCUnified power flow controller UPFCParallel compensation,series compensation,phase shifting or comprehensive regulationFunctionsNanjing 220kV Xihuan UPFC projectUPFCUPFC influence on lightning overvoltage UPFC influence on circuit harmonic UPFC influence o
4、n voltage dropUPFC（1）voltage regulation:（3）series compensation:（2）Phase shifting:（4）comprehensive regulation Equivalent CircuitUPFCInjected power model Equivalent Circuit03Calculation ModelCalculation Model Objective Function 1、Minimum active power loss:2、Maximum static voltage stability:To measure
5、the convergent power flow of Jacobian matrix minimum eigenvalueCalculation ModelConstraint Condition Solving Methods Quadratic Programming,Interior Point Method,Genetic Algorithm,Particle Swarm Algorithm,etc.04ResultsResultsExample Analysis IEEE-30 bus system The economic status and the voltage quality of the system are changed by the UPFC parameters.Normal operation mode Heavy load operation modeTHANKS
