摘要
孤岛检测在分布式光伏发电并网研究中具有重要的意义,特别是在逆变器输出与负载功率匹配问题上,使孤岛检测复杂化。这里采用电压相位突变与电压扰动相结合的检测方法,该方法克服了采用单一的被动检测方法在近乎阻性负载下失效的问题,不存在检测盲区,可实现快速有效的孤岛检测功能,通过PSIM软件仿真及实验验证了该方法的正确性。
Islanding detection in distributed PV grid-connected study has an important significance, especially when power balance between the output of inverter and the load.An islanlding detection method based on phase jump and the voltage perturbation combination of photovoltalc grid-connected system is designed.This method can overcome the shortcoming that the phase jump detection method fails to work under resistive load, and it can achieve fast and effective islanding detection.The load parameters range of islanding non-detection zone is discussed.The correctness of the method is verified by the PSIM simulation and experiment.
出处
《电力电子技术》
CSCD
北大核心
2012年第6期7-9,共3页
Power Electronics
基金
浙江省教育厅重大科技攻关项目(ZD2009005)
嘉兴市科技计划项目(2008AY2024)~~
关键词
孤岛检测
相位突变
电压扰动
并网
islanding detection
phase jump
voltage disturbing
grid-connected
