不同控制参数下垂控电压源变换器的暂态稳定边界

2022 International Conference on Power Energy Systems and Applications (ICoPESA) Pub Date : 2022-02-25 DOI:10.1109/ICoPESA54515.2022.9754460

Pingjuan Ge, Chunming Tu, Fan Xiao, Zekun Xiao, Yuchao Hou, Leqi Chen

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引用次数: 1

摘要

配备P-f和Q-U下垂控制的电压源变换器(VSCs)可以为电网提供电压和频率支持。VSC的安全稳定运行对电力系统具有重要意义。然而，在故障条件下，VSC可能会失去暂态稳定性，类似于同步发电机(SGs)。VSC暂态稳定边界可以为暂态控制提供指导，但对VSC暂态稳定边界的定量描述研究较少。在此基础上，定量分析了临界清除率(CCA)和临界清除率(CCT)，以描述不同控制参数和故障条件下VSC的暂态稳定边界。最后通过仿真实验验证了理论分析的正确性。

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Transient Stability Boundary of a Droop-Controlled Voltage Source Converter with Different Control Parameters

Voltage source converters (VSCs) equipped with P-f and Q-U droop control can provide voltage and frequency support for power grid. The safe and stable operation of the VSC is of great significance to the power system. However, under fault conditions, a VSC may lose transient stability, similar to synchronous generators (SGs). The transient stability boundary of VSCs can provide guidance for the transient control, but there are few researches about the quantitative description of VSC transient stability boundary. Based on these, the critical clearing angle (CCA) and critical clearing time (CCT) are analyzed quantitatively to describe the transient stability boundary of a VSC under different control parameters and fault conditions. Finally, simulation tests are performed to validate the correctness of the theoretical analysis.

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2022 International Conference on Power Energy Systems and Applications (ICoPESA)

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