Transcription of REACTIVE POWER AND VOLTAGE CONTROL
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REACTIVE POWER AND VOLTAGE CONTROL
REACTIVE POWER AND VOLTAGE REACTIVE POWER AND VOLTAGE CONTROLS alvador Acha Daza, Ph. Distinguished POWER LecturerJune 2014 Guide1 MODELINGA ssumptions and V, I, P, QTransformers, Transmission Lines, GeneratorsSVC s (static VAR compensators)2 BASICS ABOUT VOLTAGE CONTROLQ-V relationReactive POWER flow and incremental modelDecupled Load-FlowTap s CONTROL and generalized controlTap s CONTROL and generalized control3 SENSITIVITY Q-V AND COORDINATED CONTROLS ensitivity coefficientsApplication and coordinatedcontrolQ-V CongestionRadial networks4 VOLTAGE COLLAPSEA ngle stabilityVoltage collapse2 Modeling3 Single phase, steady state: VOLTAGE , Current AC VOLTAGE and current, f = 60 Hz rms values: 120 V, 50 A If current lags voltageby 30o+V-ILoadconvention150v(t)4 VIfPhasor , secvoltage V, current Ai(t)v(t)Complex POWER S, P and QVAjSjQPIVSoo000, ,5)3050()0120(** QfSIPQ5 PQfPower plane cos fis the POWER factor The case shows a lagging POWER factor +V-LoadconventionRjwLWhat is P and Q?
Transformers, Transmission Lines, Generators SVC’s (static VAR compensators) 2 BASICS ABOUT VOLTAGE CONTROL Q-V relation Reactive power flow and incremental model Decupled Load-Flow Tap’s control and generalized control 3 SENSITIVITY Q-V AND COORDINATED CONTROL Sensitivity coefficients Application and coordinated control
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