AC Port Voltage Control Strategy and Stability Analysis of Flexible Distribution Equipment Based on Virtual Synchronous Generator

Zhen LI; Wanxing SHENG; Songhuai DU; Penghua LI; Jianhua WANG

doi:10.7500/AEPS20190812008

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AC Port Voltage Control Strategy and Stability Analysis of Flexible Distribution Equipment Based on Virtual Synchronous Generator

Application Research | 更新时间：2025-06-16

- AC Port Voltage Control Strategy and Stability Analysis of Flexible Distribution Equipment Based on Virtual Synchronous Generator
- Automation of Electric Power Systems Vol. 44, Issue 8, Pages: 141-148(2020)
- 作者机构：
  
  1.中国农业大学信息与电气工程学院，北京市 100083
  2.配电变压器节能技术北京市重点实验室(中国电力科学研究院有限公司)，北京市 100192
  3.东南大学电气工程学院，江苏省南京市 210096
- 作者简介：
- 基金信息：
  
  Basic and Prospective Science and Technology Project of State Grid Corporation of China
- DOI：10.7500/AEPS20190812008
  CLC：
- Received：12 August 2019，
  
  Revised：2019-10-18，
  
  Published Online：16 January 2020，
  
  Published：25 April 2020
- 稿件说明：
移动端阅览
李振,盛万兴,杜松怀等.采用VSG的柔性配电装备交流端口电压控制及稳定性分析[J].电力系统自动化,2020,44(8):141-148.

LI Zhen,SHENG Wanxing,DU Songhuai,et al.AC Port Voltage Control Strategy and Stability Analysis of Flexible Distribution Equipment Based on Virtual Synchronous Generator[J].Automation of Electric Power Systems,2020,44(8):141-148.
李振,盛万兴,杜松怀等.采用VSG的柔性配电装备交流端口电压控制及稳定性分析[J].电力系统自动化,2020,44(8):141-148. DOI： 10.7500/AEPS20190812008.

LI Zhen,SHENG Wanxing,DU Songhuai,et al.AC Port Voltage Control Strategy and Stability Analysis of Flexible Distribution Equipment Based on Virtual Synchronous Generator[J].Automation of Electric Power Systems,2020,44(8):141-148. DOI： 10.7500/AEPS20190812008.

摘要

向负载供电及接纳分布式电源是柔性配电装备的重要功能，因此柔性配电装备端口控制至关重要。文中针对柔性配电装备交流端口电压控制问题，在虚拟同步发电机控制基础上，对三相进行独立控制，通过级联准比例-谐振电压外环、电流内环提高其动态性能。进而以单相为例，详细分析柔性配电装备交流端口输出电流对电压的影响，并提出电流前馈控制策略，保证负载变化、分布式电源接入等变化过程中交流端口电压的稳定。利用阻抗建模方法分析交流端口的输出阻抗

并根据广义奈奎斯特判据验证柔性配电装备交流端口向负荷供电及接纳分布式电源时的稳定性。通过仿真和相关实验验证了所提控制策略的有效性和正确性。

Abstract

Supplying power for loads and realizing the connection of distributed generators (DGs) are the essential functions of the flexible distribution equipment (FDE). Consequently

the control of AC port in FDE is intensely crucial. Aiming at the AC port voltage control of FDE

the three-phase voltage is controlled independently based on the virtual synchronous generator (VSG) control

and its dynamic performance is improved by cascaded quasi proportional-resonant (PR) voltage outer-loop and current inner-loop. Furthermore

the influence of AC port output current of FDE on the voltage is analyzed in detail by taking single-phase voltage as an example. And the current feedforward control strategy is proposed to ensure the AC port voltage stability while loads vary and DG access. The output impedance of AC port is obtained by the impedance modeling method

and the stability of FDE is analyzed by generalized Nyquist stability criterion when AC port supplies power for loads and realizes DG connection. Finally

the correctness and effectiveness of the proposed control strategy are verified by simulation and experiment.

关键词

Keywords

references

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