Quantitative Analysis of Voltage Stability Boundaries Dominated by Renewable Energy Low Voltage Ride-through Control

FENG Zhengcheng; LAN Tiankai; XU Shiyun; SUN Huadong; SHAN Yunjing; CHEN Jinhui

doi:10.7500/AEPS20251112002

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Quantitative Analysis of Voltage Stability Boundaries Dominated by Renewable Energy Low Voltage Ride-through Control

更新时间：2026-10-27

- Quantitative Analysis of Voltage Stability Boundaries Dominated by Renewable Energy Low Voltage Ride-through Control
- Automation of Electric Power Systems Pages: 1-17(2026)
- 作者机构：
  
  中国电力科学研究院有限公司，北京市 100192
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(52307152);State Grid Corporation of China(5100-202455426A-3-6-RW)
- DOI：10.7500/AEPS20251112002
  CLC：
- Received：12 November 2025，
  
  Revised：2026-05-20，
  
  Online First：24 September 2026，
- 稿件说明：
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冯正诚,兰天楷,徐式蕴等.新能源低电压穿越控制主导的电压稳定边界量化分析[J/OL].电力系统自动化, http://dx.doi.org/10.7500/AEPS20251112002.

FENG Zhengcheng,LAN Tiankai,XU Shiyun,et al.Quantitative Analysis of Voltage Stability Boundaries Dominated by Renewable Energy Low Voltage Ride-through Control[J/OL].Automation of Electric Power Systems, http://dx.doi.org/10.7500/AEPS20251112002.
冯正诚,兰天楷,徐式蕴等.新能源低电压穿越控制主导的电压稳定边界量化分析[J/OL].电力系统自动化, http://dx.doi.org/10.7500/AEPS20251112002. DOI：

FENG Zhengcheng,LAN Tiankai,XU Shiyun,et al.Quantitative Analysis of Voltage Stability Boundaries Dominated by Renewable Energy Low Voltage Ride-through Control[J/OL].Automation of Electric Power Systems, http://dx.doi.org/10.7500/AEPS20251112002. DOI：

摘要

随着新能源的快速发展，电压稳定问题日益突出。高比例新能源电力系统中，出现了由低电压穿越控制主导的持续低电压与电压振荡两类新型失稳现象，其失稳边界难以精确量化，稳定裕度也缺乏有效评估方法。为此，文中首先在功率-阻抗空间内基于分段

P-V

曲线的切换特性，分析了上述两类失稳形态的失稳机理，推导了刻画两类失稳现象边界的显式表达式，揭示了失稳边界与线路阻抗、新能源功率及穿越控制参数之间的关系。其次，从源/网双视角分别提出机侧有功裕度与网侧阻抗裕度指标，提供了稳定裕度的可计算量化判据。最后，多个场景的电磁暂态仿真验证表明，所提边界与裕度指标能够有效判别失稳形态并量化裕度缩减程度。结果表明，计及低电压穿越控制后系统电压稳定裕度明显缩减，合理设置穿越阈值与控制参数有利于提升系统稳定性。

Abstract

With the rapid development of renewable energy

voltage stability problems have become increasingly prominent. In power systems with a high proportion of renewable energy

two types of novel instability phenomena dominated by low voltage ride-through (LVRT) control

i.e.

continuous low voltage and voltage oscillation

emerge. Their instability boundaries are difficult to quantify accurately

and effective evaluation methods for stability margins are lacking. To this end

within the power-impedance space

based on the switching characteristics

of piecewise

P-V

curves

this paper firstly analyzes the instability mechanisms of the above-mentioned two instability modes

derives explicit expressions describing boundaries of the two types of instability phenomena

and reveals relationships between instability boundaries and line impedance

renewable energy power

and LVRT control parameters. Secondly

from the dual perspectives of source and grid

the machine-side active power margin index and the grid-side impedance margin index are proposed respectively

which provide computable quantitative criteria for stability margins. Finally

verification by electromagnetic transient simulations in multiple scenarios shows that the proposed boundaries and margin indices can effectively identify instability modes and quantify the degree of margin reduction. Results show that the system voltage stability margin is significantly reduced after taking LVRT control into account

and the reasonable setting of ride-through thresholds and control parameters is conducive to improving system stability.

关键词

Keywords

references

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