两级式三相并网光伏发电系统参数选择 及控制研究.pdf

Electrical Engineering and Automation (EEA) September 2013, Volume 2, Issue 3, PP.24-30 Study on the Control of Three-phase Two-stage GCPV Generation System and the Selection of its Parameters 1# 2 1 1 Sijia Liu , Qinghu Hu , Yujin Yue , Hao Fu 1. Hunan Electric Power Design Institute, Changsha 410007, China 2. Tianjin Power Chengnan District Supply Company, Tianjin 300000, China #Email: lciga@126.com Abstract Three-phase grid-connected photovoltaic generation system with two-stage has been researched in this paper, in which the selection principle of the main parameters in the system is available, and parameters of ACR and AVR are adjusted based on the typical І and typical II system design principles and thus grid-connected control is realized. Owing to the two-stage where the maximum power tracking is achieved in the first stage, and grid-connected is achieved via controlling inverter in the second stage, and the independence of the two-stage, the system has a great expansion capability. Finally, the system is proved to be well agreed with GB/T 14549-1993 by numerical simulations. Keywords: Grid-Connected Photovoltaic Generation System; Maximum Power Point Tracking; Direct Current Control; Distributed Generator 两级式三相并网光伏发电系统参数选择 及控制研究 1 2 1 1 刘思佳 ，胡庆虎 ，岳玉金 ，付豪 1. 湖南省电力勘测设计院，湖南省长沙市410007 2. 天津市电力公司城南供电分公司，天津市300000 摘 要：本文研究了两级式三相并网光伏发电系统，给出了系统主要参数选取的原则，并根据典型І 型和Ⅱ型系统设计原 则进行ACR 和AVR 的参数整定，实现了并网控制。由于两级的存在，在前级控制升压变化器实现最大功率跟踪，后级 控制逆变器实现并网，两级相对独立，便于系统容量扩展。最后运用 Matla