上海交通大学学报 ›› 2023, Vol. 57 ›› Issue (4): 412-421.doi: 10.16183/j.cnki.jsjtu.2021.505

所属专题: 《上海交通大学学报》2023年“新型电力系统与综合能源”专题

• 新型电力系统与综合能源 • 上一篇    下一篇

光伏发电系统动态离散等值模型研究

刘可真, 陈雪鸥, 陈镭丹, 林铮, 沈赋()   

  1. 昆明理工大学 电力工程学院,昆明 650500
  • 收稿日期:2021-12-10 修回日期:2022-03-06 接受日期:2022-05-05 出版日期:2023-04-28 发布日期:2023-05-05
  • 通讯作者: 沈 赋,讲师;E-mail:shenfu@kust.edu.cn.
  • 作者简介:刘可真(1974-),教授,现主要从事以新能源为主体的新型电力系统多态势感知研究.
  • 基金资助:
    国家自然科学基金(52107097);云南省应用基础研究计划(202101BE070001-061);云南省应用基础研究计划(202201AU070111);昆明理工大学高层次人才平台建设(KKZ7202004004)

Dynamic Discrete Equivalent Model of Photovoltaic Power Generation System

LIU Kezhen, CHEN Xueou, CHEN Leidan, LIN Zheng, SHEN Fu()   

  1. School of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China
  • Received:2021-12-10 Revised:2022-03-06 Accepted:2022-05-05 Online:2023-04-28 Published:2023-05-05

摘要:

可再生能源在新型电力系统中的占比进一步加大,光伏机组并网容量有明显提升的趋势,而不同渗透率下的光伏发电系统动态行为对电网负荷特性产生显著影响,但光伏发电并网动态模型复杂、待辨识参数多,增大了模型实际运用难度.为此,基于光伏电站机理模型,建立光伏发电并网系统的动态离散等值模型,得到光伏发电并网系统的动态离散等值模型的模型参数;并采用IEEE 14节点系统研究不同渗透率下光伏发电并网系统的动态离散等值模型特性.仿真结果表明,光伏发电并网系统的动态离散等值模型能准确描述光伏发电系统的动态特性,且精度高、易于辨识.

关键词: 光伏发电, 动态等值, 不同渗透率, 参数辨识

Abstract:

The proportion of renewable energy in the new power system is further increased, and the grid connected capacity of photovoltaic units has a trend of obvious improvement. The dynamic behavior of the photovoltaic (PV) power generation system at different permeabilities has a significant impact on the load characteristics of the power grid. However, the complex dynamic model of photovoltaic power generation grid connection and the large number of parameters to be identified increase the difficulty of practical application of the model. Therefore, a dynamic discrete equivalent model of the PV power generation model based on the physical model of the PV power generation model is established, and the parameters of the dynamic discrete equivalent model for the PV power generation model are obtained. The IEEE 14-bus system, which is subject to various PV permeabilities, is adopted to verify the superb dynamic characteristics of the proposed discrete equivalent model for the PV power generation in power system simulations. The pertinent simulation results show that the dynamic discrete equivalent model of the PV power generation system can accurately describe the dynamic characteristics of the PV power generation system with a high accuracy and an easy identification performance.

Key words: photovoltaic (PV), dynamic equivalence, various permeabilities, parameter identification

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