发电技术 ›› 2023, Vol. 44 ›› Issue (6): 850-858.DOI: 10.12096/j.2096-4528.pgt.22009

• 新能源 • 上一篇    下一篇

基于交替方向隐式平衡截断法的直驱风电场次同步振荡分析的模型降阶研究

王进钊, 严干贵, 刘侃   

  1. 现代电力系统仿真控制与绿色电能新技术教育部重点实验室(东北电力大学 ),吉林省 吉林市 132000
  • 收稿日期:2022-03-19 出版日期:2023-12-31 发布日期:2023-12-28
  • 通讯作者: 严干贵
  • 作者简介:王进钊(1999),男,硕士研究生,主要研究方向为新能源联网运行控制与稳定性分析,3464599638@qq.com
    严干贵(1971),男,博士,教授,主要研究方向为新能源发电运行控制、大规模储能技术应用和电力系统稳定与控制等,本文通信作者,yangg@neepu.edu.cn
  • 基金资助:
    国家自然科学基金项目(U1866601)

Research on Model Reduction of Direct Drive Wind Farm Subsynchronous Oscillation Analysis Based on Alternating Direction Implicit Balanced Truncation Method

Jinzhao WANG, Gangui YAN, Kan LIU   

  1. Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education (Northeast Electric Power University), Jilin 132000, Jilin Province, China
  • Received:2022-03-19 Published:2023-12-31 Online:2023-12-28
  • Contact: Gangui YAN
  • Supported by:
    National Natural Science Foundation of China(U1866601)

摘要:

研究了直驱风电场次同步振荡分析的降阶模型,提出了基于交替方向隐式(alternating direction implicit,ADI)的平衡截断方法。首先,根据直驱式永磁同步风电机组的数学表征搭建风电场的数学模型,采用ADI方法迭代求解李亚普诺夫方程,得到可控的格莱姆矩阵与可观的格莱姆矩阵;然后,采用平衡截断的方法得到降阶模型;通过对比全阶模型与降阶模型的时域仿真波形、Bode图、计算耗时以及次同步振荡模式,验证了方法的有效性。仿真结果表明,降阶模型与全阶模型具有很好的一致性,同时计算速度提高,降阶阶数大大降低。

关键词: 直驱风电场, 交替方向隐式(ADI), 次同步振荡, 模型降阶, 平衡截断法

Abstract:

A reduced order model for subsynchronous oscillation analysis of direct drive wind farm was studied, and a balanced truncation method based on alternating direction implicit (ADI) was proposed. Firstly, the mathematical model of wind farm was built according to the mathematical representation of direct-driven permanent magnet synchronous wind turbine. The ADI method was used to solve the Lyapunov equation iteratively, and the controllable and observable Gramm matrixs were obtained. Then, the balanced truncation method was used to obtain the reduced order model. The time domain simulation waveform, Bode diagram, calculation time and subsynchronous oscillation mode of the full order model and the reduced order model were compared to verify the effectiveness of the proposed method. The simulation results show that the reduced order model has good consistency with the full order model, and the calculation speed is improved and the number of reduced order is greatly reduced.

Key words: direct drive wind farm, alternating direction implicit (ADI), subsynchronous oscillation, model reduction, balanced truncation method

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