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Harmonic State-Space Based AC-Side Impedance Model of MMC and High Frequency Oscillation Characteristics Analysis

Hui Fang1, Jingsen Zhou1, Haozheng Wang2,*, Yanxu Wang2, Hongji Xiang1, Yechun Xin2

1 State Grid Chongqing Electric Power Company Research Institute, Chongqing, 401120, China
2 Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology (Northeast Electric Power University), Jilin, 132012, China

* Corresponding Author: Haozheng Wang. Email: email

Energy Engineering 2023, 120(4), 831-850. https://doi.org/10.32604/ee.2023.025171

Abstract

Recently, high-frequency oscillation of the modular multilevel converter (MMC) based high-voltage direct current (HVDC) projects has attracted great attentions. In order to analyze the small-signal stability, this paper uses the harmonic state-space (HSS) method to establish a detailed frequency domain impedance model of the AC-side of the HVDC transmission system, which considers the internal dynamic characteristics. In addition, the suggested model is also used to assess the system's high-frequency oscillation mechanism, and the effects of the MMC current inner loop control, feedforward voltage links, and control delay on the high-frequency impedance characteristics and the effect of higher harmonic components. Finally, three oscillation suppression schemes are analyzed for the oscillation problems occurring in actual engineering, and a simplified impedance model considering only the high-frequency impedance characteristics is established to compare the suppression effect with the detailed impedance model to prove its reliability.

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APA Style
Fang, H., Zhou, J., Wang, H., Wang, Y., Xiang, H. et al. (2023). Harmonic state-space based ac-side impedance model of MMC and high frequency oscillation characteristics analysis. Energy Engineering, 120(4), 831-850. https://doi.org/10.32604/ee.2023.025171
Vancouver Style
Fang H, Zhou J, Wang H, Wang Y, Xiang H, Xin Y. Harmonic state-space based ac-side impedance model of MMC and high frequency oscillation characteristics analysis. Energ Eng. 2023;120(4):831-850 https://doi.org/10.32604/ee.2023.025171
IEEE Style
H. Fang, J. Zhou, H. Wang, Y. Wang, H. Xiang, and Y. Xin "Harmonic State-Space Based AC-Side Impedance Model of MMC and High Frequency Oscillation Characteristics Analysis," Energ. Eng., vol. 120, no. 4, pp. 831-850. 2023. https://doi.org/10.32604/ee.2023.025171



cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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