Outstanding questions around increasing variable generation penetration in the ERCOT system

Maggio, David; D'Annunzio, Claudine; Huang, Shun-Hsien; Thompson, Chad

doi:10.1109/pes.2010.5589481

Cited by 9 publications

(5 citation statements)

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“…The reference value of each wind farm equals to its predicated maximum generation capacity when its needn't to curtail wind power, the process is as (9) shows . ,max ,max ( 1) (…”

Section: B Operating Point Of Wind Farm Output Acctive Power Considementioning

confidence: 99%

“…Along with large amount of wind power integrated, the power system will face the intermittent and uncertainty of wind power besides the fluctuation of load, it's an important issues to ensure the reliability and efficiency of power system [1]- [3]. The predication error of wind power ahead by an hour could be up to 10%-15% of rated power, which is much larger than the predication error of load power.…”

Section: Introductionmentioning

confidence: 99%

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Active power real-time control strategy for wind farms coordinated with power system

Cheng-ming

Wang

2013

2013 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)

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Because of the intermittent and uncertainty of wind power, the change rate and amplitude of power system net-load increase with wind power penetration growing continuously. The prediction error of wind power generation capacity is large, so it's difficult to quantify its impact on AGC adjustment capacity and incorporate wind power maximally. To solve the problem, an active power real-time control method for wind farms considering AGC adjustment capability limits is proposed in this paper. Base on the strategy, the net-load fluctuation of next period is estimated according to the newest wind power and load predication information, the reference power of wind farm can be determined combined with the adjustment capacity of AGC. At the same time, in order to improve the value of wind power, an additional frequency control loop is design for the down-regulated wind farms. The simulation result demonstrates the feasibility of the proposed strategy.

show abstract

“…The reference value of each wind farm equals to its predicated maximum generation capacity when its needn't to curtail wind power, the process is as (9) shows . ,max ,max ( 1) (…”

Section: B Operating Point Of Wind Farm Output Acctive Power Considementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Active power real-time control strategy for wind farms coordinated with power system

Cheng-ming

Wang

2013

2013 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)

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show abstract

“…To account for this error while managing frequency and to reduce the inaccurate balancing deployment caused by WGRs, ERCOT added WGR QSE's SCE to the balancing energy requirement. ERCOT also implemented the wind forecasting tool to provide hourly wind forecast for both the individual wind farms and on the aggregate system level and continue to improve the accuracy of forecasting [8,9,10,11].…”

Section: Effect On Management Of Frequencymentioning

confidence: 99%

“…ERCOT operators are forced to use more expensive ancillary reserves more frequently in order to maintain frequency at the desired level. To address this issue, ERCOT is improving wind generation forecast tool for real time operation while making changes to ancillary service requirement determination methodology to take into consideration the effects of wind generation [8,9,10,11,12].…”

Section: Introductionmentioning

confidence: 99%

Wind generation scheduling and coordination in ERCOT Nodal market

Hui

Yu²,

Gao³

2012

2012 IEEE Power and Energy Society General Meeting

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ERCOT has completed its transition from a Zonal market to an advanced Nodal market in December 2010. The new Nodal market enables Wind Generation Resources (WGRs) to realize their asset's value and ensures the system reliability at the same time. ERCOT forecasts and publishes the Short-Term Wind Power Forecast (STWPF) and Wind Generation Resources Production Potential (WGRPP) for the next 48 hours. Utilizing STWPF in conjunction with specific local WGR information, the Qualified Scheduling Entities (QSE) submit Current Operating Plan (COP) for their WGR providing projected WGR capacities and statuses. The wind generation scheduling in Day-Ahead Market (DAM), Reliability Unit Commitment (RUC) and Security ConstrainedEconomic Dispatch (SCED) is discussed in this paper. Phase shifting transformers tap settings are automatically determined as part of DAM and RUC optimization process to allow more effective power transfer from wind farms in the West Texas area to ERCOT load centers. In real-time operation, Nodal market recognizes the intermittence and variability of wind generation and imposes a wider tolerance for wind generating resource while applying Base Point deviation charges.

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“…Along with large amount of wind power integrated, the power system will face the intermittent and uncertainty of wind power besides the fluctuation of load, it's an important issues to ensure the reliability and efficiency of power system [1]- [3]. The prediction error of wind power ahead by an hour could be up to 10%-15% of rated power, which is much larger than the prediction error of load power.…”

Section: Introductionmentioning

confidence: 99%

Active power real-time control strategy for wind farm considering AGC adjustment capability Limits

Wang

2014

2014 IEEE PES T&D Conference and Exposition

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Because of the intermittent and uncertainty of wind power, the change rate and amplitude of power system net-load increase with wind power penetration growing continuously. The prediction error of wind power generation capacity is large, so it's difficult to quantify its impact on AGC adjustment capacity and incorporate wind power maximally. To solve the problem, an active power real-time control method for wind farms considering AGC adjustment capability limits is proposed in this paper. Base on the strategy, the net-load fluctuation of next period is estimated according to the newest wind power and load prediction information, the reference power of wind farm can be determined combined with the adjustment capacity of AGC. At the same time, in order to improve the value of wind power, an additional frequency control loop is design for the down-regulated wind farms. The simulation result demonstrates the feasibility of the proposed strategy.

show abstract

Outstanding questions around increasing variable generation penetration in the ERCOT system

Cited by 9 publications

References 0 publications

Active power real-time control strategy for wind farms coordinated with power system

Active power real-time control strategy for wind farms coordinated with power system

Wind generation scheduling and coordination in ERCOT Nodal market

Active power real-time control strategy for wind farm considering AGC adjustment capability Limits

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