Small Signal Stability Analysis of LCC/VSC Hybrid Multi-infeed HVDC System Based on Generalized Short Circuit Ratio

WANG Yixin; LIU Xiaoying; WANG Ying; HUA Wen; XIN Huanhai; HUANG Linbin

doi:10.13334/j.0258-8013.pcsee.250241

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Small Signal Stability Analysis of LCC/VSC Hybrid Multi-infeed HVDC System Based on Generalized Short Circuit Ratio

更新时间：2026-10-12

- Small Signal Stability Analysis of LCC/VSC Hybrid Multi-infeed HVDC System Based on Generalized Short Circuit Ratio
- Vol. 46, Issue 10, Pages: 3981-3994(2026)
- 作者机构：
  
  1. 1 浙江大学电气工程学院,浙江省,杭州市,310027
  2. 2 国网经济技术研究院有限公司，北京市昌平区,102209
  3. 3 国网浙江省电力有限公司电力科学研究院,浙江省,杭州市,310014
- 作者简介：
- 基金信息：
- DOI：10.13334/j.0258-8013.pcsee.250241
  CLC：
- Published：2026
- 稿件说明：
移动端阅览
WANG Yixin, LIU Xiaoying, WANG Ying, et al. Small Signal Stability Analysis of LCC/VSC Hybrid Multi-infeed HVDC System Based on Generalized Short Circuit Ratio[J]. 2026, 46(10): 3981-3994.
DOI：

WANG Yixin, LIU Xiaoying, WANG Ying, et al. Small Signal Stability Analysis of LCC/VSC Hybrid Multi-infeed HVDC System Based on Generalized Short Circuit Ratio[J]. 2026, 46(10): 3981-3994. DOI： 10.13334/j.0258-8013.pcsee.250241.

摘要

电网换相换流器型高压直流输电(line commutated converter based high voltage direct current，LCC-HVDC)和柔性直流(voltage source converter based HVDC，VSC-HVDC)混合馈入受端电网的格局正在形成，准确量化混合多馈入系统的稳定裕度至关重要。短路比(short circuit ratio，SCR)指标常被用于在传统LCC-HVDC多馈入系统中描述稳定裕度。然而，在混合多馈入系统中，短路比表征稳定的机理和定义尚不明确。为此，该文从小干扰稳定角度提出基于广义短路比(generalized SCR，gSCR)的混合多馈入系统稳定裕度量化方法。首先，建立LCC-HVDC的小干扰导纳模型，利用同步主导回路法研究锁相环对LCC-HVDC小干扰稳定的影响机理；其次，利用构网型VSC-HVDC阻抗矩阵的最大奇异值刻画VSC-HVDC对混合多馈入系统的电压支撑能力；最后，将gSCR指标推广到混合多馈入系统，提出混合多馈入系统小干扰稳定裕度的量化评估方法。仿真算例验证了所提方法的有效性。

Abstract

The configuration of hybrid receiving-end power grids fed by both line commutated converter based high voltage direct current (LCC-HVDC) and voltage source converter based HVDC (VSC-HVDC) systems is emerging

and accurately quantifying the stability margin of hybrid multi-infeed systems is crucial. The short-circuit ratio is often used to describe voltage stability margins in traditional LCC-HVDC multi-infeed systems. However

in hybrid multi-infeed systems

the mechanism and definition of the short circuit ratio (SCR) remain unclear. To address this issue

this paper proposes a method for quantifying the stability margin of hybrid multi-infeed systems based on the generalized SCR (gSCR) from the perspective of small-signal stability. Firstly

a small-signal admittance model for LCC-HVDC is established

and the impact of the phase-locked loop on the small-signal stability of LCC-HVDC is investigated using the synchronous dominant loop method. Secondly

the maximum singular value of the impedance matrix of VSC-HVDC is utilized in characterizing the voltage support capability of VSC-HVDC in hybrid multi-infeed systems. Finally

the gSCR is extended to hybrid multi-infeed systems

and a quantitative assessment method for the small-signal stability margin of hybrid multi-infeed systems is proposed. Simulation examples verify the effectiveness of the proposed method.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Microstructure Evolution and Mechanical Performance During Sodiation of Hard Carbon Anode in Sodium-ion Battery by ReaxFF-MD Method

The impact of negative media coverage on innovation in high-tech firms

Research on the mechanisms and effects of open government data empowering enterprises' digital transformation

Research on high-quality development path of specialized，refined，distinctive and innovative enterprises: A mixed-method study

Risk Management Planning Method for Data Center Microgrids With Electricity-water-computing Collaboration

Related Author

No data

Related Institution

No data

AI问答

⁰