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Spatial and temporal analysis of electric wind generation intermittency and dynamics

机译:风力发电间歇性和动力学的时空分析

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摘要

A spatial and temporal analysis of wind power generation characteristics was conducted in order to determine the implications of intermittent wind generation dynamics on the profile of the electric loads that must be balanced by dispatchable electrical generators on the electric grid. A parametric analysis was conducted to evaluate the sensitivity of the typical magnitudes of wind power fluctuations on different timescales, power variation range, typical daily and seasonal wind profiles to wind farm size and regional distribution. A methodology to evaluate wind dynamics based on power spectral density analyses have been developed. Results indicate that increasing the size of a local wind farm significantly reduced the magnitude of wind power fluctuations on timescales faster than 12 h, with the largest reductions occurring at the fastest timescales. Additional reductions in power fluctuations can be achieved with the implementation of local and regional distribution of wind turbines in disperse high wind areas. In these cases, it was discovered that the timescale band within which the largest reductions in power fluctuations occurred was dependent on regional geographic features, and did not necessarily correspond to the fastest timescales. In addition, it was also discovered that the aggregation of wind power from different regions could produce a more uniform frequency distribution of power fluctuation reductions.
机译:进行了风力发电特性的时空分析,以确定断续的风力发电动力学对必须由电网上可调度发电机平衡的电力负荷分布的影响。进行了参数分析,以评估不同时间尺度,功率变化范围,典型每日和季节性风廓线对风电场规模和区域分布的典型风电波动幅度的敏感性。已经开发了一种基于功率谱密度分析的评估风动力学的方法。结果表明,增加本地风电场的规模可以在比12小时更快的时间尺度上显着降低风能波动的幅度,其中最大的减少发生在最快的时间尺度上。通过在分散的高风区域实施风机的局部和区域分布,可以进一步减少功率波动。在这些情况下,发现发生功率波动减少最大的时标范围取决于区域地理特征,并且不一定对应于最快的时标。另外,还发现来自不同区域的风电的聚集可以产生功率波动减小的更均匀的频率分布。

著录项

  • 来源
    《Renewable energy》 |2011年第12期|p.3424-3432|共9页
  • 作者单位

    University of California Irvine, Mechanical and Aerospace Engineering, Irvine, CA 92697, USA;

    University of California Irvine, Mechanical and Aerospace Engineering, Irvine, CA 92697, USA;

    University of California Irvine, Mechanical and Aerospace Engineering, Irvine, CA 92697, USA;

    University of California Irvine, Mechanical and Aerospace Engineering, Irvine, CA 92697, USA;

    University of California Irvine, Mechanical and Aerospace Engineering, Irvine, CA 92697, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    wind intermittency; wind dynamics; wind integration; power spectral density;

    机译:风间歇性;风动力学;风积分;功率谱密度;

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