The impact of Wind Farms on Subsynchronous Resonance in Power Systems Massimo Bongiorno Evert Agneholm and Andreas Petersson Gothia Power AB  Outline  Subsynchronous Resonance in Power Systems  Spect

The impact of Wind Farms on Subsynchronous Resonance in Power Systems Massimo Bongiorno Evert Agneholm and Andreas Petersson Gothia Power AB Outline Subsynchronous Resonance in Power Systems Spect - Description

Mechanical system Electrical system Transmission system Spectrum of rotor speed Rotor speed Resulting voltage at machine terminals e f i Subsynchronous Resonance in Power Systems brPage 5br Subsynchronous Resonance in Power Systems brPage 6br Risk ID: 27548 Download Pdf

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The impact of Wind Farms on Subsynchronous Resonance in Power Systems Massimo Bongiorno Evert Agneholm and Andreas Petersson Gothia Power AB Outline Subsynchronous Resonance in Power Systems Spect

Mechanical system Electrical system Transmission system Spectrum of rotor speed Rotor speed Resulting voltage at machine terminals e f i Subsynchronous Resonance in Power Systems brPage 5br Subsynchronous Resonance in Power Systems brPage 6br Risk

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The impact of Wind Farms on Subsynchronous Resonance in Power Systems Massimo Bongiorno Evert Agneholm and Andreas Petersson Gothia Power AB Outline Subsynchronous Resonance in Power Systems Spect




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Presentation on theme: "The impact of Wind Farms on Subsynchronous Resonance in Power Systems Massimo Bongiorno Evert Agneholm and Andreas Petersson Gothia Power AB Outline Subsynchronous Resonance in Power Systems Spect"— Presentation transcript:


Page 1
The impact of Wind Farms on Subsynchronous Resonance in Power Systems Massimo Bongiorno, Evert Agneholm and Andreas Petersson Gothia Power AB
Page 2
Outline
Page 3
Subsynchronous Resonance in Power Systems
Page 4
Spectrum of voltage at machine terminals. Mechanical system Electrical system Transmission system Spectrum of rotor speed. Rotor speed. Resulting voltage at machine terminals. e = f i, Subsynchronous Resonance in Power Systems
Page 5
Subsynchronous Resonance in Power Systems
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Risk for SSR in different generation

units
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Event in Texas October the 22 nd 2009 To Nelson Sharpe To Rio Hondo AJO 100 Mvar 100 Mvar ERCOT Metering Zorillo ERCOT Metering Sarita Penascal Gulf Wind Gulf Wind South 93.6 MW 96 MW 37 miles 67 miles The series capacitors are at Rio Hondo They provide 50% line compensation of the Z of the Rio Hondo to Lon Hill line There are two stages of capacitors (17% and 33%) Both stages are usually in service Fault occurred on this line
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Description of the event
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Recordings at Zorillo
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Cause of SSR in wind farms
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Cause of SSR in wind farms 10 15 20 25 30 35 40 45 -1 -0.5 0.5 resistance [pu] 10 15 20 25 30 35 40 45 -1 -0.5 0.5 reactance [pu] frequency [Hz]
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Impact of controller parameters 10 40.5 41 41.5 42 42.5 resonance frequency [Hz] 10 -2 -1.5 -1 -0.5 resistance [pu] curren controller bandwidth, cc [pu]
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Impact of operating point 10 43.5 44 44.5 45 resonance frequency [Hz] 10 -1.4 -1.2 -1 -0.8 -0.6 -0.4 resistance [pu] curren controller bandwidth, cc [pu] 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.5 0.6 0.7 0.8 0.9 1.1 1.2 rotor speed [pu] Output power [pu]
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Impact of operating point 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 42 43 44 45 46 resonance frequency [Hz] 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 -3.5 -3 -2.5 -2 -1.5 -1 resistance [pu] Output power [pu]
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Simulated system
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SSR Dynamic simulation analysis
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SSR Simulation results 5.5 6.5 -4000 -2000 2000 4000 active power [MW] 5.5 6.5 -2000 2000 active power [MW] 5.5 6.5 800 810 820 active power [MW] time [s]
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Conclusions