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首页> 外文期刊>Electric power systems research >Experimental validation of a hybrid TD/FEHD model of a wind turbine generator for harmonic transient analysis
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Experimental validation of a hybrid TD/FEHD model of a wind turbine generator for harmonic transient analysis

机译：用于谐波暂态分析的风力发电机组TD / FEHD混合模型的实验验证

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摘要

Harmonic transient analysis of wind turbine generators (WTGs) requires reliable models to reproduce harmonic dynamics accurately and to ensure that such models perform closely to actual components.A recent harmonic modeling technique, named flexible extended harmonic domain (FEHD), is adopted in this paper as part of the proposed approach. FEHD provides reduced-order extended harmonic domain (EHD) models that include an arbitrary number of harmonics (not necessarily sequentially-numbered) in each state/part of the system; thus, leading to computational burden improvement while keeping accuracy and high-frequency ripple information.The adopted FEHD together with time-domain (TD) are interfaced in this paper to produce a hybrid TD/FEHD, which is used to model a synchronous-based WTG. In the proposed WTG model, the whole system is divided into TD-based and FEHD-based subsystems. These two subsystems can use distinct integration time-steps; thus, leading to improvement in CPU-time compared to pure EHD models, without losing accuracy. The criterion to select both subsystems consists on simulation requirements, i.e., using TD for the zone whereaverageddynamics are sufficient whilst FEHD is used where high-order harmonic dynamics are important for harmonic transient analysis.The obtained results are verified with experimental data and validated with PSCAD/EMTDC, revealing a very good agreement.
机译：风力发电机的谐波瞬态分析需要可靠的模型来精确地再现谐波动力学并确保此类模型与实际组件紧密配合。本文采用了一种最新的谐波建模技术，称为柔性扩展谐波域（FEHD）。作为拟议方法的一部分。 FEHD提供了降阶扩展谐波域（EHD）模型，该模型在系统的每个状态/部分中包括任意数量的谐波（不一定是顺序编号）；本文将采用的FEHD与时域（TD）进行接口，以生成混合TD / FEHD，该模型用于基于同步的建模。 WTG。在提出的WTG模型中，整个系统分为基于TD的子系统和基于FEHD的子系统。这两个子系统可以使用不同的集成时间步长。因此，与纯EHD模型相比，CPU时间得到了改善，而又没有损失准确性。选择这两个子系统的标准取决于仿真要求，即在平均动力学足够的区域使用TD，而在高次谐波动力学对于谐波瞬态分析很重要的区域则使用FEHD。所获得的结果用实验数据进行验证，并通过PSCAD进行验证。 / EMTDC，这显示出很好的协议。

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