中国电力 ›› 2016, Vol. 49 ›› Issue (4): 160-165.DOI: 10.11930/j.issn.1004-9649.2016.04.160.06

• 发电 • 上一篇    下一篇

光伏电源友好并网系统及其仿真研究

粟渊恺1,3,张捷2,胡世昊2,粟祎敏3,粟时平3,刘桂英3   

  1. 1. 国网湖南省电力公司检修公司,湖南 长沙 410004;
    2. 国网江西省电力公司九江供电分公司,江西 九江 332000;
    3. 长沙理工大学 电气与信息工程学院 ,湖南 长沙 410004
  • 收稿日期:2015-10-06 出版日期:2016-04-20 发布日期:2016-04-27
  • 作者简介:粟渊恺(1988-),男,湖南邵阳人,硕士研究生,从事电力系统运行与控制,智能电网、无功补偿方面的研究。E-mail: vera_0328@126.com
  • 基金资助:
    湖南省重点实验室开放基金资助项目(GXKFJJ)

Photovoltaic Generator Grid-Friendly Connection System and Simulation Study

SU Yuankai1, 3, ZHANG Jie2, HU Shihao2, SU Yimin3, SU Shiping3, LIU Guiying3   

  1. 1. State Grid Hunan Electric Power Corporation Maintenance Company, Changsha 410004, China;
    2. State Grid Jiangxi Electric Power Corporation Jiujiang Electric Power Supply Branch, Jiujiang 332000, China;
    3. College of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410004, China
  • Received:2015-10-06 Online:2016-04-20 Published:2016-04-27
  • Supported by:
    This work is supported by Key Laboratory of Hunan Prorince Open Fund Prject (No. GXKFJJ).

摘要: 为提高主电网电能质量,对光伏电源并网逆变器及其控制方法进行研究和仿真。该逆变器采用DC/DC+DC/AC的双级结构,以三相瞬时无功理论为基础,将光伏并网逆变器与有源滤波器相结合,使得光伏电源不仅可以输出有功功率,还能进行无功和谐波补偿,实现友好并网。其DC/DC部分采用Boost升压电路,通过电导增量法进行最大功率跟踪(MPPT); DC/AC部分采用电压型三相桥式逆变电路和滞环控制方法。最后给出了较详细的仿真结果,验证了所采用方法的可行性。

关键词: 光伏电源, 友好并网, 电能质量, 电导增量法, 滞环控制, 最大功率跟踪

Abstract: A new type of inverter for grid-friendly connection of photovoltaic generator is studied and simulated to improve power quality of the main grid. The inverter system makes use of a two-level DC/DC and DC/AC structure and utilizes three-phase instantaneous reactive power theory to detect reactive power and harmonic currents. The inverter is combined with Active Power Filter(APF) to not only produce active power but also compensate reactive power and harmonics, enabling grid-friendly interconnection. The DC/DC circuit of the inverter system uses boost circuit and performs maximum power tracking based on the conductance increment method. The DC/AC circuit of the system uses three-phase bridge voltage inverter circuit and hysteresis control method. Finally, the simulation model and simulation results are provided to verify the feasibility of the proposed grid-friendly connection inverter for photovoltaic.

Key words: photovoltaic generator, grid-friendly interconnection, power quality, conductance increment, hysteresis control, maximum power tracking

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