2009-09-29 Power Systems Control and Stability II

2009-09-29 Power Systems Control and Stability II - Power...

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Power Systems Control and Stability II Jovan Ilić ECE 18-418 Fall 2009
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Electrical Power System Essentials Voltage Control and Reactive Power [2] Automatic voltage control (AVR) Possible parallel generators problems: faster vs slower AVR controller slightly mismatched set points
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Electrical Power System Essentials Voltage Control and Reactive Power Tap-changing transformer 1 2 1 2 2 || | | | | | | V V n V n V V n     1 1 2 0 and V const V n V n V        
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:2 : 1 1.5 100 5676 0 146.8 36.9 || | | | | | | 0.983 restores 5773.5 l t t l l l P MW Q MVar MVar V V V V I V V I n I n V V n     Figure example 5.10
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Electrical Power System Essentials Voltage Control and Reactive Power Capacitor banks Courtesy of TenneT TSO B.V. 2 2 || V Q C V X 
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Electrical Power System Essentials Reactive Power Injection Current through a Thyristor Controlled Reactor Static Var Compensator (SVC) on-off controllable
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  2 coduction angle 2 Reference: [4]
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            12 2 sin cos cos t TCR V i t t dt t t LL     1 2 sin 2 for fundamental frequency TCRf V I jL                sin 1 sin 1 sin 4 I cos 3,5,7,. .. 2 1 2 1 TCRh h h h V h j L h h h   Reference: [4]     2 sin 2 Equivalent susceptance TCR TCR TCR I jB V B L  
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Reference: [4]
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Voltage-Source Converter (VSC) Electrical Power System Essentials
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Electrical Power System Essentials
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Controlling Active Power Flows             * 2 2 1 2 2 21 2 1 2 2 12 2 1 2 2 1 2 1 2 Power flow over a line: | || | | | Re cos( ) cos | | | | | | | | Im sin( ) sin | | | | and 0 | | | | and Q= | | | | S P jQ V I V V V PS ZZ V V V QS RX V V V P V V XX
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This note was uploaded on 09/20/2010 for the course ECE 18418 taught by Professor Illic during the Fall '09 term at Carnegie Mellon.

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2009-09-29 Power Systems Control and Stability II - Power...

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