项目名称: 大型光伏并网系统谐振机理及抑制策略研究
项目编号: No.51477021
项目类型: 面上项目
立项/批准年度: 2015
项目学科: 电工技术
项目作者: 周林
作者单位: 重庆大学
项目金额: 87万元
中文摘要: 本项目以大型光伏并网系统为研究对象,以提高大型光伏电站的系统稳定性和并网电能质量为研究目标,探索大型光伏电站与电网之间的谐振机理。项目基于光伏发电、系统建模、稳定性判定、逆变器控制、仿真分析以及实验验证等理论和技术,在建立大型光伏并网系统数学模型的基础上,探讨光伏电站容量、逆变器非线性因素、等效电网阻抗对系统稳定运行的影响,提出大型光伏并网系统稳定性判定准则,研究抑制谐振引发的谐波含量超标以及不稳定问题的逆变器控制策略。该项目旨在揭示大型光伏并网系统的谐振机理,开发拥有谐振抑制功能的新型光伏逆变器控制系统,为大型光伏电站的发展及其推广应用奠定理论基础,具有重要的工程价值与科学意义。
中文关键词: 大型光伏电站;谐振;稳定性;电能质量;抑制策略
英文摘要: This project investigates the resonance between the large-scale photovoltaic(PV) plant and the grid in order to improve the stability and power quality of the large-scale grid-connected PV system. It's based on the theory and technology of PV, modeling, stability, inverter control, simulation analysis and experimental verification to study the system stability considering the affect of the PV plant capacity, inverter nonlinear factors and equivalent grid impedance. The objective of this project is to develop a stability criterion to determine the system is stable or not, and then research inverter control strategy to suppress harmonic and instability caused by resonance. The project aims to reveal the resonance mechanism of the large-scale grid-connected PV system and develops a new inverter control system which has a function of suppressing resonant. So that it can laid the theoretical foundation for promoting the development and application of the large-scale PV plant. This project has important engineering value and scientific significance.
英文关键词: large-scale photovoltaic plant;resonce;stability;power quality;suppression strategy