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存在电网谐波和不平衡时并网系统的在线频率响应测量

Online Frequency Response Measurements of Grid-Connected Systems in Presence of Grid Harmonics and Unbalance

语言:

中文摘要

电网特性对并网系统的稳定性和控制性能影响显著。由于电网条件随时间变化,在线测量对于系统稳定性评估、保护设计及控制优化至关重要。本文针对电网存在谐波和不平衡的复杂工况,研究了在线频率响应测量方法,旨在提升并网系统在动态环境下的适应能力与控制精度。

English Abstract

Grid characteristics have a drastic impact on the stability and control performance of grid-connected systems. Because the grid conditions typically vary over time, online measurements are most desirable for the stability assessment, protection design, and control system optimization of the systems. Previous studies have presented methods based on Fourier techniques and broadband sequences, with w...
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SunView 深度解读

该研究直接服务于阳光电源的核心产品线,如组串式/集中式光伏逆变器及PowerTitan储能系统。随着电网弱化及谐波干扰增加,传统的离线建模已难以满足复杂电网下的控制需求。该在线测量技术可集成至iSolarCloud智能运维平台,实现对电网阻抗的实时辨识,从而优化逆变器及PCS的控制参数。特别对于构网型(GFM)储能变流器,该技术能显著提升系统在弱电网下的稳定性,降低谐振风险,并为提升光储电站的并网适应性提供核心算法支持。