Wind generation's contribution to supporting peak electricity demand - meteorological insights
Wind generation's contribution to supporting peak electricity demand - meteorological insights
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DOI：
10.1177/1748006x11417503
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发表时间：
2012-02-01
影响因子：
2.1
通讯作者：
Zachary, S.
中科院分区：
文献类型：
--
作者：
Brayshaw, D. J.;Dent, C.;Zachary, S.
风力发电对满足电力需求极端高峰的贡献是风力发电一体化的一个关键问题。在英国（GB），直接从电力系统数据中可靠地评估这一贡献（即计量的风力供应和电力需求）是困难的，因为极端峰值很少发生大气环流类型与气象再分析资料相结合是解决这些困难的一种手段，其动机是对2010年1月极端峰值需求事件的案例研究。对这些环流类型的物理和统计特性的初步调查表明，它们可用于确定最有可能与极端峰值需求事件相关的条件。英国上空的高压反气旋通常伴随着非常低的风速，但相对温和的温度（因此，适度的峰值需求，与文献中有时明显的经典低风速寒流形成对比）。相比之下，苏格兰/斯堪的纳维亚半岛的纵向延伸阻塞和西欧的纬度延伸槽似乎与非常寒冷的GB温度（通常与极端峰值需求相关）更密切相关。在后两种情况下，GB的平均风力资源似乎更适中。
Wind generation's contribution to meeting extreme peaks in electricity demand is a key concern for the integration of wind power. In Great Britain (GB), robustly assessing this contribution directly from power system data (i.e. metered wind-supply and electricity demand) is difficult as extreme peaks occur infrequently (by definition) and measurement records are both short and inhomogeneous.Atmospheric circulation-typing combined with meteorological reanalysis data is proposed as a means to address some of these difficulties, motivated by a case study of the extreme peak demand events in January 2010. A preliminary investigation of the physical and statistical properties of these circulation types suggests that they can be used to identify the conditions that are most likely to be associated with extreme peak demand events.Three broad cases are highlighted as requiring further investigation. The high-over-Britain anticyclone is found to be generally associated with very low winds but relatively moderate temperatures (and therefore moderate peak demands, somewhat in contrast to the classic low-wind cold snap that is sometimes apparent in the literature). In contrast, both longitudinally extended blocking over Scotland/Scandinavia and latitudinally extended troughs over western Europe appear to be more closely linked to the very cold GB temperatures (usually associated with extreme peak demands). In both of these latter situations, wind resource averaged across GB appears to be more moderate.