Interaction Quantification of MTDC Systems Connected with Weak AC Grids

Wanning Zheng; Jiabing Hu; Li Chai; Bing Liu; Zixia Sang

doi:10.17775/CSEEJPES.2022.08260

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Interaction Quantification of MTDC Systems Connected with Weak AC Grids

Regular Papers | 更新时间：2026-10-15

- Interaction Quantification of MTDC Systems Connected with Weak AC Grids
- CSEE Journal of Power and Energy Systems Vol. 10, Issue 5, Pages: 2088-2099(2024)
- 作者机构：
  
  1. Engineering Research Center of Metallurgical Automation and Measurement Technology, Wuhan University of Science and Technology,Wuhan,China
  2. State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology,Wuhan,China
  3. College of Control Science and Engineering, Zhejiang University,Hangzhou,China
  4. State Grid Hubei Economic Research Institute,Wuhan,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2022.08260
  CLC：
- Published：01 September 2024
- 稿件说明：
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Wanning Zheng, Jiabing Hu, Li Chai, et al. Interaction Quantification of MTDC Systems Connected with Weak AC Grids[J]. CSEE Journal of Power and Energy Systems, 2024, 10(5): 2088-2099.
DOI：

Wanning Zheng, Jiabing Hu, Li Chai, et al. Interaction Quantification of MTDC Systems Connected with Weak AC Grids[J]. CSEE Journal of Power and Energy Systems, 2024, 10(5): 2088-2099. DOI： 10.17775/CSEEJPES.2022.08260.

摘要

Abstract

The small-signal stability of multi-terminal high voltage direct current (HVDC) systems has become one of the vital issues in modern power systems. Interactions among voltage source converters (VSCs) have a significant impact on the stability of the system. This paper proposes an interaction quantification method based on the self-/en-stabilizing coefficients of the general

$\boldsymbol{N}-\mathbf{terminal}$

HVDC system with a weak AC network connection. First

we derive the explicit formulae of self-/en-stabilizing coefficients for any

$\boldsymbol{N}-\mathbf{terminal}$

HVDC system

which can quantify the interactions through different paths analytically. The relation between the self-/en-stabilizing coefficients and the poles of the system can be used to evaluate the impact of the interactions on the system stability effectively. Then

we employ the obtained formulae to analyze the parameter sensitivity and explain how a parameter affects the stability of the system through different paths of interactions. Finally

extensive examples are given to demonstrate the effectiveness of the proposed method.

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