作 者：
房俊龙;杨平平;傅瑜;王晓峰;刘国亮;王冠男
单 位：
东北农业大学电气与信息学院;国家电网大庆供电公司
关键词：
孤岛检测;并网逆变器;电压相角;光伏发电
摘 要：
针对分布式并网发电系统孤岛效应问题,研究一种基于逆变器端的光伏发电系统的主动式孤岛检测方法。将公共连接点(PCC)处的电压相角变化作为试验检测方法中的反馈量。在孤岛发生时,有效打破逆变器输出和负载之间的功率平衡,通过检测逆变器输出电压、频率变化,快速判断孤岛的发生。根据UL 1741标准中的技术规范,通过MATLAB软件对仿真模型进行分析,并与传统被动式孤岛检测方法比较,验证此方法的有效性和适用性。
译 名：
Active islanding detection method for photovoltaic grid-connected inverters based on voltage phase angle with positive feedback
作 者：
FANG Junlong;YANG Pingping;FU Yu;WANG Xiaofeng;LIU Guoliang;WANG Guannan;School of Electrical and Information, Northeast Agricultural University;Daqing Power Supply Company of State Grid;
关键词：
islanding detection;;grid-connected converter;;voltage phase angle;;photovoltaic power
摘 要：
The islanding effect of distributed grid-connected generation was picked as the research topic. A new method was studied for the active islanding detection of an inverter based in PV system. The variation of voltage phase angle at PCC was used as a feedback in the proposed method. It could break the balance of the output power match between inverters and loads. It identified the islands fast through detecting the changes of inverter output voltage and frequency. The simulating module was analyzed as the technique standards in the UL 1741 by MATLAB, and compared with traditional passive islanding detection method. The validity and practicability was confirmed through the emulated model.
