Impedance Modeling and Stability Analysis of LCC-HVDC Transmission System

Bo Zhang; Xiong Du; Shangning Tan; Junliang Liu; Haijiao Wang; Yiding Jin

doi:10.17775/CSEEJPES.2022.00590

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Impedance Modeling and Stability Analysis of LCC-HVDC Transmission System

Regular Papers | 更新时间：2026-03-25

- Impedance Modeling and Stability Analysis of LCC-HVDC Transmission System
- CSEE Journal of Power and Energy Systems Vol. 12, Issue 1, Pages: 366-376(2026)
- 作者机构：
  
  1. State Key Laboratory of Power Transmission Equipment, System Security and New Technology (Chongqing University),Chongqing,China
  2. Renewable Energy Research Center, China Electric Power Research Institute,Beijing,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2022.00590
  CLC：
- Published：2026
- 稿件说明：
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Bo Zhang, Xiong Du, Shangning Tan, et al. Impedance Modeling and Stability Analysis of LCC-HVDC Transmission System[J]. CSEE Journal of Power and Energy Systems, 2026, 12(1): 366-376.
DOI：

Bo Zhang, Xiong Du, Shangning Tan, et al. Impedance Modeling and Stability Analysis of LCC-HVDC Transmission System[J]. CSEE Journal of Power and Energy Systems, 2026, 12(1): 366-376. DOI： 10.17775/CSEEJPES.2022.00590.

摘要

Abstract

Interaction between the converter and the grid may lead to harmonic oscillations. The impedance-based method is an effective way to deal with the stability issue. In this study

the impedance-based method is used to investigate the small-signal stability of a cascaded 12-pulse line-commutated converter-based high-voltage direct current (LCC-HVDC) transmission system. In the modeling part

the impedance models of the single rectifier and inverter are established respectively with consideration to the effect of frequency coupling

which has improved the accuracy of the models. Based on the models

the AC impedance models of the cascaded LCC-HVDC transmission system are established both on the rectifier and inverter side. In the stability analysis part

the stability of the system is analyzed under different working conditions. The simulation results reveal that the established impedance model can properly represent the stability of this system. The findings of this study can provide a theoretical reference for the stability design and oscillation suppression strategy of LCC-HVDC transmission systems and LCC interconnected systems.

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