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Voltage Collapse In Wind Power System

ELEN E9501 Presentation. Voltage Collapse In Wind Power System. Yuhan Zhang. UNI: yz2500. Content. 1.Why there will occur Voltage Collapse. Violation of voltage limits and undesirable line outages are leading power systems

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Voltage Collapse In Wind Power System

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  1. ELEN E9501 Presentation Voltage Collapse In Wind Power System Yuhan Zhang UNI: yz2500

  2. Content

  3. 1.Why there will occur Voltage Collapse Violation of voltage limits and undesirable line outages are leading power systems to voltage instability and ultimately to voltage collapse. Sudden load increases or Insufficient reactive power supplies may also contribute to voltage collapse and Blackouts. Voltage collapse or blackouts have occurred worldwide: France 1978 Belgium 1982 Florida USA 1985 Western France 1987 Southern Finland 1992 Northeast USA 2003 Italy, England 2003

  4. 1.Why there will occur Voltage Collapse Northeast Blackout – August 14, 2003 • Affected 55 million people • $6 billion lost • Per year $135 billions lost for power interruption

  5. 1.Why there will occur Voltage Collapse Keep zs and power factor constant |zs/zld|=1=>Pmax

  6. P-V curve

  7. 2. What the researchers done on this topic Analyze the reason why the voltage collapse Try to find the accurate voltage collapse point Static analysis Dynamic analysis It’s a really brief conclusion about what others have done. In the following presentation, I will focus on what I have done and what I will do.

  8. 3. My idea came from?

  9. 3. My idea came from? Although wind power cannot be controlled, we can do the prediction based on the history data and the weather report. Hence we can use the prediction data to analyze the next hour/day power and voltage distribution. It is helpful to the power grid dispatching. Voltage Collapse In Wind Power System

  10. 4. Introduce the model I use First step: a simplified model • Dependent on: • Pout • Qout • Rline, Xline • … Zld=Rld+jXld Zs=Rs+jXs

  11. 4. Introduce the model I use Second step: a more complex model PQ nodes (#1, #2, #3, #4 and #5); PV nodes( Generator set #6, #7, #8); Equilibrium node (#9).

  12. 5. The cases I focus on Use the prediction data to analyze Use the actual data to analyze Compare the two sets of data

  13. ELEN E9501 Presentation Thank You! Yuhan Zhang UNI: yz2500

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