Modified Dynamic Model and Small-signal Stability Analysis for LCC- HVDC Systems

Chunyi Guo; Jiaqing Zhang; Shuo Yang; Huan Li; Chuang Fu

doi:10.17775/CSEEJPES.2021.05820

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Modified Dynamic Model and Small-signal Stability Analysis for LCC- HVDC Systems

更新时间：2026-02-06

- Modified Dynamic Model and Small-signal Stability Analysis for LCC- HVDC Systems
- CSEE Journal of Power and Energy Systems Vol. 11, Issue 2, Pages: 750-759(2025)
- 作者机构：
  
  1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University,Beijing,China
  2. China Southern Power Grid State Key Laboratory of HVDC, Electric Power Research Institute,Guangzhou,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2021.05820
  CLC：
- Published：2025
- 稿件说明：
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Chunyi Guo, Jiaqing Zhang, Shuo Yang, et al. Modified Dynamic Model and Small-signal Stability Analysis for LCC- HVDC Systems[J]. CSEE Journal of Power and Energy Systems, 2025, 11(2): 750-759.
DOI：

Chunyi Guo, Jiaqing Zhang, Shuo Yang, et al. Modified Dynamic Model and Small-signal Stability Analysis for LCC- HVDC Systems[J]. CSEE Journal of Power and Energy Systems, 2025, 11(2): 750-759. DOI： 10.17775/CSEEJPES.2021.05820.

摘要

Abstract

Inaccuracy of modeling for line commutated converter based high voltage direct current (LCC-HVDC) systems will degrade the reliability of small-signal stability analysis results. Taking a practical project as the study system

this paper establishes a modified dynamic model by modifying the current switching function

firing angle calculation and DC voltage calculation. Then

the accuracy of the modified model is verified by a detailed electromagnetic transient (EMT) simulation. Finally

with the modified dynamic model

the impact of the control parameters and AC system strength on the small-signal stability of the overall system is investigated by adopting the eigen-analysis. The results clearly demonstrate that the modified model shows higher accuracy than the original model.

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