电气工程学报 ›› 2018, Vol. 13 ›› Issue (12): 19-23.doi: 10.11985/2018.12.004

• • 上一篇    

基于虚拟同步机的光伏并网系统控制研究

包广清1,谭宏涛1,丁坤2,3,汪宁渤2,3,高鹏飞2,3   

  1. 1. 兰州理工大学电气工程与信息工程学院 兰州 730050
    2. 国网甘肃省电力公司风电技术中心 兰州 730050
    3. 甘肃省新能源并网运行控制重点实验室 兰州 730050
  • 收稿日期:2018-06-20 出版日期:2018-12-31 发布日期:2020-01-02
  • 作者简介:包广清 女 1972年生,博士,博士生导师,教授,研究方向为特种电机设计、新能源并网稳定性等。|谭宏涛 男 1994年生,硕士研究生,研究方向为大规模风光集群并网稳定性分析。
  • 基金资助:
    国家电网公司科技项目

Research on Grid-Connected Photovoltaic System Control Based on Virtual Synchronous Generator

Bao Guangqing1,Tan Hongtao1,Ding Kun2,3,Wang Ningbo2,3,Gao Pengfei2,3   

  1. 1. Lanzhou University of Technology Lanzhou 730050 China
    2. State Grid Gansu Electric Power Corporation Wind Power Technology Center Lanzhou 730050 China
    3. Key Laboratory of Wind Power Integration Operation and Control Lanzhou 730050 China
  • Received:2018-06-20 Online:2018-12-31 Published:2020-01-02
  • Supported by:
    SGGSKY00FJJS1700303

摘要:

由于光伏新能源多通过电力电子接口接入电网,使得原先由同步发电机占主导地位的电力系统转变为高频电力电子化的电力系统。针对大规模光伏电源接入电网导致电力系统原有的转动惯量变得更小的问题,以双极式三相并网系统为研究对象,采用虚拟同步发电机控制策略,并在Matlab/Simulink中进行仿真验证。仿真结果表明:采用虚拟同步机控制策略的光伏并网系统能模拟出传统同步机惯性、调频特性。

关键词: 光伏并网, 虚拟同步机, 惯性, 调频

Abstract:

As the new photovoltaic energy access to the power grid through the power electronic interface, the power system, which was originally dominated by the synchronous generator, is transformed into a high frequency power electronic power system. In view of the problem that large scale photovoltaic power grid connected to the power grid leads to the smaller inertia moment of power system, the control strategy of the virtual synchronous generator is adopted in the bipolar three-phase grid system. The simulation results in Matlab/Simulink show that the PV grid system with the control strategy of virtual synchronizer can simulate the inertia and frequency modulation characteristics of the traditional synchronizer.

Key words: Grid-connected photovoltaic, virtual synchronous generator, inertia, frequency modulation

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