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Advanced Curtailment Logic for Golden Spread Panhandle Wind Ranch Operations

The Golden Spread Panhandle Wind Ranch, with a capacity of 78.2 MW and 34 turbines, is strategically located just east of Amarillo, TX. Since commencing commercial operations in September 2011, it has exhibited a capacity factor of 48.59% and has implemented advanced curtailment logic to optimize performance. This system evaluates market conditions to determine when to reduce or release wind output based on real-time pricing. The control system ensures efficient operations while notifying local balancing authorities of curtailment or release actions.

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Advanced Curtailment Logic for Golden Spread Panhandle Wind Ranch Operations

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  1. Wind Farm Curtailment Logic

  2. Golden Spread Panhandle Wind Ranch • Golden Spread Panhandle Wind Ranch (GS PWR) • 78.2 MW • 34 Turbines • Located just East of Amarillo TX in the TX Panhandle • Commercial Operations Date September 2011 • Capacity Factor: 48.59% • Effective Factor: 50.84% • Highest Monthly Capacity Factor: 60.89% • Lowest Monthly Capacity Factor: 36.57% • Average LMP: $23.29/MWh • Max LMP: $408.28/MWh • Min LMP: $-561.03/MWh

  3. Curtailment • EIS Market - Intermittent Status • GSEC imports the (LIP) into SCADA from the XML Listener data stream (We hope to be able to get market prices from SPP via ICCP in the future). • A short program is written within SCADA to evaluate the LIP prices and send a base point to the wind farm control system if the criteria is met.

  4. Curtailment Continued…. • The logic will Curtail the wind farm (reduce output close to zero without opening the breaker) if the instantaneous price is less than or equal to a certain “extreme” price point or if the average price for two consecutive intervals are less than or equal to a “less extreme” dollar amount. • The logic will Release the wind farm (increase based on actual capability of production) if the instantaneous price is greater than or equal a certain “extreme” price point or if the average price for two consecutive intervals are greater than or equal to a “less extreme” dollar amount. • The logic will ignore any price change for 20 minutes after each Curtailment or Release operation. • Safety • Oscillation

  5. Curtailment Continued…. • The wind farm has local/remote control capability, which allows the wind farm to ignore the SCADA signal if needed. • An email is automatically sent to the local BA for notification of when the wind farm will be curtailed and also when it will be released from curtailment as a result of the “logic”. • This email is sent 1 minute prior to being curtailed or released.

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