作者：张东¹, 吴俊娟², 潘蕾²

作者单位：1. 秦皇岛港务集团有限公司, 河北 秦皇岛 066004;
2. 燕山大学, 河北 秦皇岛 066004

关键词：光伏发电; 并网逆变器; 孤岛检测; 孤岛建模; 相位突变检测

摘要：

国内的光伏发电技术中,孤岛检测及孤岛保护常常被忽视,而孤岛的发生可能会带来巨大危害,因此,研究孤岛检测及其保护具有重要的现实意义。针对传统过压/欠压、高频/低频孤岛检测方法的不足,结合相位突变检测方法,提出一种组合式孤岛检测方法,并对其进行理论分析和建模。最后,仿真结果验证了提出的孤岛检测方法的快速性和有效性。

Research on islanding detection for photovoltaic grid-connected inverters

ZHANG Dong¹, WU Jun-juan², PAN Lei²

1. Qinhuangdao Port Group Ltd., Qinhuangdao 066004, China;
2. Yanshan University, Qinhuangdao 066004, China

Abstract: The islanding detection and protection are generally ignored in their applications.For islanding may result in calamities,it is necessary to study and analyze the islanding detection and protection methods.Considering the disadvantages of the traditional over/under voltage and over/under frequency detection,a novel hybrid islanding detection method was proposed by integrating the phase jump detection.The theoretical analysis and model for the proposed detection method was carried out.Finally,the simulation results show that the proposed islanding detection method is effective and practical.

Keywords: Photovoltaic power; Grid-connected inverter; Islanding detection; Islanding model; Phase jump detection

2007, 33(4): 67-70  收稿日期: 2007-1-7;收到修改稿日期: 2007-3-11

基金项目: 

作者简介: 张东(1978-),男,助理工程师,研究方向为电气工程。

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