Harmonic Stability Analysis for Multi-Parallel Inverter-Based Grid-Connected Renewable Power System Using Global Admittance
Harmonic Stability Analysis for Multi-Parallel Inverter-Based Grid-Connected Renewable Power System Using Global Admittance
复制标题
使用全局导纳的多并联逆变器并网可再生电力系统谐波稳定性分析
作者：
曹武;刘康礼;汪舜羽;康昊天;范栋琛;赵剑锋
多并联电压源型逆变器（VSI）并网在可再生能源、储能、谐波抑制等领域得到了广泛应用，但由于并网逆变器之间通过电网阻抗的相互作用，可能会引起谐波稳定问题，严重威胁系统的稳定性。基于阻抗的稳定性判据为分析谐波不稳定问题提供了一种有效的工具，可以分为两种类型，即比率型和总和型。在已有和型判据研究的基础上，进一步提出了一种基于PCC全局导纳的和型判据，通过频域分析来评估系统的稳定性。这种基于导纳的全局稳定判据不仅可以用于分析系统稳定性，而且可以以较低的计算负担揭示各个VSI单元对系统稳定性的影响，为谐振抑制提供指导，特别是在并网逆变器数量较多和逆变器参数不对称的情况下。最后，建立了MATLAB/Simulink仿真模型和由6台并网逆变器组成的400 kVA/400 V实验平台，并给出了相应的仿真结果，验证了所提方法的有效性。
Multi-parallel grid-connected voltage source inverters (VSIs) are widely applied in the fields of renewable energy, energy storage, harmonic suppression, etc. However, these inverters may cause harmonic stability problems due to the interactions among the grid-connected inverters through the grid impedance, which can seriously threaten system stability. The impedance-based stability criterion provides an effective tool for analyzing harmonic instability issues and can be divided into two types, namely, a ratio type and a sum type. Based on the existing studies of the sum-type criterion, this paper further proposes a new sum-type form based on the global admittance from the PCC to assess system stability through frequency-domain analysis. This global admittance-based stability criterion can be used not only to analyze system stability, but also to reveal the influence of each VSI unit on system stability with a lower computational burden and provide guidance for resonance suppression, especially in the case of a large number of grid-connected inverters and asymmetric inverter parameters. Finally, a MATLAB/Simulink model and 400 kVA/400 V experimental platform consisting of six grid-connected VSIs were established, and the corresponding results are presented to verify the effectiveness of the proposed method.
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DOI：
10.1007/978-3-319-98687-6_5
发表时间：
2018-11
期刊：
Microgrids Design and Implementation
影响因子：
--
作者：
M. Castilla;L. G. D. Vicuña;J. Miret
通讯作者：
M. Castilla;L. G. D. Vicuña;J. Miret
影响因子：
6.7
作者：
Xiongfei Wang;F. Blaabjerg;Marco Liserre;Zhe Chen;Jinwei He;Y. Li
通讯作者：
Xiongfei Wang;F. Blaabjerg;Marco Liserre;Zhe Chen;Jinwei He;Y. Li
影响因子：
4.4
作者：
J. Beerten;S. D'arco;J. Suul
通讯作者：
J. Beerten;S. D'arco;J. Suul
影响因子：
6.7
作者：
Zeng Liu;Jinjun Liu;Weihan Bao;Yalin Zhao
通讯作者：
Zeng Liu;Jinjun Liu;Weihan Bao;Yalin Zhao
影响因子：
6.6
作者：
G. Kalcon;G. P. Adam;O. Anaya‐Lara;Stephen Lo;K. Uhlen
通讯作者：
G. Kalcon;G. P. Adam;O. Anaya‐Lara;Stephen Lo;K. Uhlen