论文标题
风力涡轮机中的控制电厂的谐波缓解方案
Harmonic Mitigation Schemes for Wind Power Plants by Embedding Control in Wind Turbines
论文作者
论文摘要
谐波污染可能会损坏风力发电厂（WPP）中的电器，并传播到外部网格。本文提出了一种谐波缓解方案，通过嵌入风力涡轮机中的谐波控制功能（WTS）来管理WPP中的谐波。它可以在公共耦合（PCC）的遥远点上提高功率质量，该耦合的远处是由网格代码调节的。提出的方案根据瞬时测量检测WT总线和PCC的谐波，并计算所需的补偿电流。在拟议的缓解方案中合并了减少本地WT总线上总和扭曲的一般补偿方案，以及降低远程PCC的选定级谐波的特定补偿方案。此外，提出了使用频率依赖模型的相校正算法来补偿本地WT总线和远程PCC之间的相位差异。使用制造的现场测量数据的离岸WPP模型在Digsilent/PowerFactory中实施，以验证拟议的谐波缓解方案的有效性。
Harmonic pollution may damage the electric devices in wind power plants (WPPs), and propagate to the external grid. This paper proposes a harmonic mitigation scheme by embedding harmonic control functions in wind turbines (WTs) to manage the harmonics in WPPs. It can improve the power quality at the remote Point of Common Coupling (PCC), regulated by grid codes. The proposed scheme detects the harmonics at WT buses and PCC based on instantaneous measurements, and calculates the required compensation currents. Both the general compensation scheme for reducing total harmonic distortion at the local WT buses and the specific compensation scheme for reducing the selected-order harmonics at the remote PCC are combined in the proposed harmonic mitigation scheme. Besides, a phase correction algorithm using the frequency-dependent model is proposed to compensate the phase differences between local WT buses and remote PCC. A model of offshore WPP using manufacture's field-measurement data is implemented in DIgSILENT/PowerFactory to validate the effectiveness of the proposed harmonic mitigation scheme.
