Simulation and Modeling Methodologies, Technologies and Applications - International Online Conference (SIMULTECH 2021)
Simulation and Modeling Methodologies, Technologies and Applications - International Online Conference (SIMULTECH 2021)
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仿真和建模方法、技术和应用 - 国际在线会议 (SIMULTECH 2021)
DOI：
10.1007/978-3-031-23149-0_4
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Deng Z
中科院分区：
文献类型：
--
作者：
Deng Z
在过去十年中，可再生能源得到了大量部署，预计这一趋势将继续下去，而且更有可能加速。这些设备通过电力电子接口与电力系统连接，而其他发电源则直接连接到电网。因此，需要开发专门的模型来研究可再生能源的整合。一旦模型被开发，需要进行各种类型的系统集成研究，以评估稳态和瞬态系统运行。本文重点介绍一类稳态研究，称为谐波分析，旨在评估可再生能源对电压和电流失真的影响。谐波研究越来越受到关注，因为在某些情况下，电力电子接口设备可能会产生不期望的谐波，这些谐波可能在电网谐振条件下进一步放大。本文比较了两种不同的模型，理想的和频率相关的阻抗表示和各种求解器实施的各种情况下的研究。一个九总线网络模型，包括两个风力发电厂和两个光伏装置，用于演示各种案例研究。建议提出适当的模型可再生能源取决于考虑的具体应用。商业软件DIgSILENT PowerFactory用于进行分析，但结果可以推广到其他工具。
Renewable energy sources have been deployed in large amounts in the last decade, and this trend is expected to continue, and more likely to accelerate. These devices are interfaced to the power system by means of a power electronics interface, while other generating sources are directly connected to the grid. As a result, the development of dedicated models to study the integration of renewable energy sources is required. Once the models are developed, various types of system integration studies need to be performed to assess both steady-state and transient system operation. This paper focuses on a category of steady-state studies, referred to as harmonic analysis, that aims at assessing the impact of renewable energy sources on voltage and current distortion. Harmonic studies are gaining attention because under certain circumstances, the power electronics interface devices may generate undesirable harmonics, that may be further amplified under grid resonance conditions. This paper compares various cases studies where two different models, ideal and frequency-dependent impedance representation and various solvers are implemented. A nine-bus network model, including two wind plants and two photovoltaic installations, is used to demonstrate various case studies. Recommendations are proposed to appropriately model renewable energy sources depending on the specific application considered. The commercial software DIgSILENT PowerFactory is used to carry out the analysis, but the results can be generalized to other tools.