电气工程学报 ›› 2020, Vol. 15 ›› Issue (1): 41-47.doi: 10.11985/2020.01.006

所属专题: 特邀专栏:微电网功率变换与稳定控制

• 特邀专栏: 微电网功率变换与稳定控制 • 上一篇    下一篇

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基于自适应转动惯量VSG的微电网稳定控制

朱作滨1,黄绍平2   

  1. 1. 江西工程学院人工智能学院 新余 338000
    2. 湖南工程学院电气与信息工程学院 湘潭 411100
  • 收稿日期:2019-10-02 出版日期:2020-03-25 发布日期:2020-05-13
  • 作者简介:朱作滨,男,1988年生,硕士研究生。主要研究方向为电能变换及控制技术。E-mail:913672953@qq.com|黄绍平,男,1964年生,硕士,教授。主要研究方向为微网控制与保护。E-mail:874945076@qq.com

Microgrid Stability Control Based on Adaptive Rotating Inertia VSG

ZHU Zuobin1,HUANG Shaoping2   

  1. 1. College of Artificial Intelligence, Jiangxi University of Engineering, Xinyu 338000 China
    2. School of Electrical and Information Engineering, Hunan Institute of Engineering, Xiangtan 411100 China
  • Received:2019-10-02 Online:2020-03-25 Published:2020-05-13

摘要:

为了深入分析自适应转动惯量虚拟同步机(Virtual synchronous generator,VSG)控制对微网频率稳定性作用机理,在常规VSG数学模型的基础上,利用同步发电机的功角特性曲线及转子角速度振荡周期曲线,分析了自适应转动惯量对微电网频率稳定作用机理,并对自适应转动惯量VSG控制策略进行稳定性分析及关键参数整定设计。分析结果表明,在负荷扰动情况下,采用自适应转动惯量的VSG控制策略系统的稳定性和动态性能较好。相比常规的VSG控制策略,该方法频率波动明显得到抑制,输出功率响应性得到加快。最后,建立自适应转动惯量VSG控制策略仿真模型,通过仿真验证了该方法的有效性。

关键词: 微电网, 虚拟同步机, 转动惯量, 自适应控制

Abstract:

In order to deeply analyze the mechanism of adaptive rotary inertia virtual synchronous generator (VSG) control on frequency stability of microgrid, based on the mathematical model of conventional VSG, using the power-angle characteristic curve of synchronous generator and the period curve of rotor angular velocity oscillation, the mechanism of adaptive rotary inertia on frequency stability of microgrid is analyzed, and the control strategy of adaptive rotary inertia VSG is proposed. The key parameters are tuned and designed. The results show that the system stability and dynamic performance of VSG control strategy with adaptive rotating inertia are better under load disturbance. Compared with the conventional VSG control strategy, the frequency fluctuation and output power overshoot are significantly suppressed. Finally, the simulation model of adaptive rotary inertia VSG control strategy is established, and the effectiveness of the method is verified by simulation.

Key words: Microgrid, virtual synchronous generator, rotary inertia, adaptive control

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