Reactive Power Control to Mitigate Flicker in a Tidal and River Hydrokinetic Power Generation
Reactive Power Control to Mitigate Flicker in a Tidal and River Hydrokinetic Power Generation
复制标题
无功功率控制可减轻潮汐和河流水力发电中的闪变
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
R. Wills
中科院分区：
文献类型：
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作者：
S. Seo;J. Kim;E. Muljadi;S. Meor;M. Worthington;R. Wills
在潮汐和河流水动力发电中，水流的波动特性和电网条件会引起输出功率的波动，这种功率波动可能会在连续运行过程中引起电压波动或闪变。在电能质量问题上，在一定的电网条件下，电压波动或闪变会限制潮汐发电机和河流发电机的并网。因此，为了解决潮汐和河流水动力发电中的这一电能质量问题，需要对闪变进行评估和缓解。减少可再生资源闪变最常用的技术是无功补偿。本文研究了无功控制(无功控制)在不同电网条件下抑制闪变的效果。算例采用PSCAD/EMTDC仿真工具开发的潮汐河水动力并网发电的简化模型。
In tidal and river hydrokinetic power generation, the fluctuating nature of water currents and the grid condition induce the fluctuating output power, and this power fluctuation may cause voltage fluctuations or flicker during the continuous operation. In terms of the power quality issue, voltage fluctuation or flicker can limit the integration of the tidal and river generators in certain conditions of power system networks. Hence, assessment and mitigation of flicker are required to solve this power quality problem in the tidal and river hydrokinetic power generation. The mostly adopted technique to mitigate the flicker in renewable resources is the reactive power compensation. This paper investigates the effectiveness of flicker mitigation by the reactive power control (VAr control) in different grid conditions. The case study is performed by a simplified model of the grid-connected tidal and river hydrokinetic power generator developed in the simulation tool of PSCAD/EMTDC.