| 带正反馈的主动移频孤岛检测法的参数优化 |
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| 引用本文： | 刘方锐,康勇,张宇,段善旭.带正反馈的主动移频孤岛检测法的参数优化[J].电工电能新技术,2008,27(3). |
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| 作者姓名： | 刘方锐 康勇 张宇 段善旭 |
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| 作者单位： | 华中科技大学电气与电子工程学院,湖北,武汉,430074 |
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| 基金项目： | 台达电力电子科技发展基金 |
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| 摘 要： | 孤岛检测是光伏并网发电系统所必备的功能。在各种被动和主动孤岛检测方法中,主动移频是一种比较有效的检测手段。该方法通过对逆变器输出电流的频率进行扰动来实现孤岛状态检测。本文分析了主动移频孤岛检测法的工作原理,推导出带正反馈的主动移频法的检测盲区,并详细给出了相关参数的优化过程。仿真与实验验证了该优化方法的有效性。
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| 关 键 词： | 光伏系统 并网 孤岛检测 主动移频 |
Parameter optimization for active frequency drift with positive feedback islanding detection strategy |
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| LIU Fang-rui,KANG Yong,ZHANG Yu,DUAN Shan-xu.Parameter optimization for active frequency drift with positive feedback islanding detection strategy[J].Advanced Technology of Electrical Engineering and Energy,2008,27(3). |
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| Authors: | LIU Fang-rui KANG Yong ZHANG Yu DUAN Shan-xu |
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| Abstract: | Islanding detection is a mandatory function for grid-connected converters.Among all the passive and active islanding detection method,the active frequency drift method is pretty attractive.It injects perturbations in the frequency of the converter output current to achieve islanding detection.The operation principle of such strategy is analyzed in this paper.Non-detection zone(NDZ) and the parameters optimization principle are provided as well.The islanding detection performance is evaluated through theoretical analysis and experimental results. |
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| Keywords: | PV grid-connected converter islanding detection active phase shift |
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