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首页> 外文期刊>Renewable Power Generation, IET >Frequency control by variable speed wind turbines in islanded power systems with various generation mix
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Frequency control by variable speed wind turbines in islanded power systems with various generation mix

机译：具有不同发电量的孤岛电力系统中的变速风力涡轮机的频率控制

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摘要

This study presents the impact on power system frequency control in small power systems based on different generator topologies with a large penetration (50%) of variable speed wind turbines. The impact of a proposed controller is investigated versus various wind speeds. In particular, wind speeds with an average wind speed just below rated wind speed proves to cause the worst frequency fluctuations regardless of the type of backup generation topology investigated during 50% wind-penetration ratio. For this wind-speed session and a hydro-based system, the proposed control system improves the frequency duration outside of the specified range [49.9, 50.1]Hz from 81 to 53% while reducing its delivered energy by only 6%. Furthermore, the proposed control reduces the absolute value of requested reserve by 49% from the hydro unit responsible for primary frequency control.
机译：这项研究提出了基于不同发电机拓扑的小型电力系统对电力系统频率控制的影响，这种发电机拓扑具有大比例（50％）的变速风力涡轮机。针对各种风速，研究了建议的控制器的影响。特别是，平均风速刚好低于额定风速的风速被证明会导致最严重的频率波动，而与在50％的风速比期间研究的备用发电拓扑的类型无关。对于这种风速会话和基于水的系统，建议的控制系统将超出指定范围[49.9，50.1] Hz的频率持续时间从81％提高到53％，同时仅将其传递的能量降低6％。此外，拟议的控制将负责一次频率控制的水力发电机组的要求储备量的绝对值降低了49％。

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