Studies on models and algorithms of the power system probabilistic production simulation integrated with wind farm

Bie, Zhaohong; Zou, Xin; Wang, Zijing; Wang, Xifan

doi:10.1109/pes.2009.5275582

Cited by 16 publications

(12 citation statements)

References 10 publications

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“…(5) Form the sequential load of the study period and modify the sequential load series by subtracting the wind farm output power of the corresponding hour. (6) Do the probabilistic production simulation using equivalent energy function method [42]. (7) If the convergence criterion is satisfied or the maximum simulation year is reached, go to step (8), else go to step (4).…”

Section: Evaluation Proceduresmentioning

confidence: 99%

Effects of wind speed probabilistic and possibilistic uncertainties on generation system adequacy

Sun

Bie

Xie³

et al. 2015

IET Generation, Transmission & Distribution

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A random fuzzy model is proposed to express the probabilistic and possibilistic uncertainties of wind speed simultaneously. In this model, wind speed is represented by a random variable following Weibull distribution, indicating the probabilistic uncertainty. The Weibull distribution parameters of wind speed are fuzzy numbers, meaning the possibilistic uncertainty of wind speed. For estimating distribution parameters, a multi-objective optimisation problem is developed based on cumulative probability and probability distributions of wind speed. The proposed model is then combined with traditional generation system adequacy (GSA) evaluation method to investigate the effect of wind speed uncertainties on GSA. To overcome the difficulty in calculating fuzzy GSA indices, sparse grid is utilised to select collocation points and single-index regression is employed to fit the relationship between adequacy indices and wind speed parameters. This study illustrates the effectiveness of the model from its application to IEEE Modified Reliability Test System. Compared with previous researches, the proposed model is suitable for the case of incomplete data or containing some outliers. It provides more helpful interval information on wind speed and adequacy indices.

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Section: Evaluation Proceduresmentioning

confidence: 99%

Effects of wind speed probabilistic and possibilistic uncertainties on generation system adequacy

Sun

Bie

Xie³

et al. 2015

IET Generation, Transmission & Distribution

Self Cite

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“…(4) illustrates the wake effect of a single wind turbine. In a large scale offshore wind farm, downstream wind turbines will be affected by several upstream turbines, which can be represented by the multi-wake flow model [10]. The wind speed w v considering multiple wake effects is:…”

Section: Wind Farm Power Generation Considering Wake Effectsmentioning

confidence: 99%

“…The wind speed was assumed to be subjected to the Weibull distribution with parameters c = 11.2 m/s and k = 2.26 [11]. In the wake effect model, the decay constant K was set to 0.05 and the thrust coefficient t C was assumed based on [10]. The wind farm has a rated power of 600 MW and consists of 150 wind turbines with a rated power of 4 MW.…”

Section: Case Studymentioning

confidence: 99%

Energy curtailment analysis of offshore wind farms with DC series-parallel collection systems

Guo

Wang

Zhang

et al. 2015

2015 5th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT)

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Voltage balancing among the series connected wind turbines is one of the main technical challenges of offshore wind farms with DC series-parallel collection systems. Due to wake effect considerations, the power generated among the series connected wind turbines does not remain the same and the series connection causes the output voltages of the turbines to be distributed in proportion to their power output. Power curtailment is required in order to prevent the turbines being subjected to over-voltage and under-voltage conditions. In this paper, a voltage adjustment procedure is proposed to eliminate overvoltage and under-voltage of wind turbines. Based on the voltage adjustment procedure and the power generation model of wind turbines, the energy curtailment of a wind farm is analyzed with the consideration of wake effect due to series connection. A case study on several DC series-parallel collection configurations is presented to analyze the energy curtailment of wind farms using the voltage adjustment procedure.

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“…Intelligent control strategies for energy optimization include the data-mining methods, which also consider the power demand from the utility grid, as well as MPPT techniques. On the basis of literature survey the various possible MPPT techniques which are currently in practice are identified [16] - [21]. MPPT algorithms by changing the speed reference in the desired direction.…”

Section: Mppt For Energy Capturementioning

confidence: 99%

Wind Energy Conversion System Integrated with Grid under Variable Speed Scenario

Ashfaq¹,

Tripathi²

2015

IJAREEIE

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ABSTRACT:The recent sensitive issue of climate change is due to the extensive amount of carbon emission through the consumption of fossil fuel as the primary option for energy demand. Due to the negative impact of green house effect, the alternative and renewable energy options have received significant attention global scale. The two branched approach of renewable energy projects including the reduction in the global greenhouse gas emissions and encouragement to the development of alternate green energy options like wind energy. Wind energy has become one of most acceptable solution among the different renewable energy resources because of the application of power electronic based controllers that allows the wind energy conversion system (WECS) to generate quality electric power irrespective of variable wind profile. The continuous flow of quality power from WECS to grid is insured for wider range of wind speed. Doubly fed induction generator (DFIG) used in WECS having power electronic converter which requires very small friction of power in comparison to the total generation capacity. This paper brings out the analysis of a DFIG system in terms of its stator and rotor currents and real and reactive power balance when the machine is operating with varying wind velocity conditions. Various possible maximum power point tracking techniques are listed in the paper. The suitable Maximum power point tracking (MPPT) technique has also been suggested to harness maximum available power for a given wind velocity to ensure the continuous power flow from WECS to the power grid.

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Studies on models and algorithms of the power system probabilistic production simulation integrated with wind farm

Cited by 16 publications

References 10 publications

Effects of wind speed probabilistic and possibilistic uncertainties on generation system adequacy

Effects of wind speed probabilistic and possibilistic uncertainties on generation system adequacy

Energy curtailment analysis of offshore wind farms with DC series-parallel collection systems

Wind Energy Conversion System Integrated with Grid under Variable Speed Scenario

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