带有谐波补偿功能的主动移频式孤岛检测法
发布时间：2018-08-29 09:46
【摘要】：首先利用快速傅里叶变换分析了用于孤岛检测的传统主动频率偏移(AFD)法引起的谐波,基于分析结果,得出了传统AFD法引起的3、5、7次谐波电流的公式。通过引入与上述谐波电流相位相反的电流,对谐波进行补偿。给出了所提带谐波补偿功能的AFD法在数字化控制系统中的实现方法。仿真和实验结果表明,所提方法有效地减少了系统中的谐波电流,同时不影响孤岛检测。
[Abstract]:Firstly, the harmonic caused by the traditional active frequency offset (AFD) method for islanding detection is analyzed by using the fast Fourier transform. Based on the analysis results, the formula of the 3 ~ 5 ~ (th) th harmonic current caused by the traditional AFD method is obtained. The harmonic is compensated by introducing a current opposite to the phase of the harmonic current mentioned above. The implementation of the proposed AFD method with harmonic compensation in digital control system is presented. Simulation and experimental results show that the proposed method can effectively reduce the harmonic current in the system without affecting the islanding detection.
【作者单位】： 福州大学电气工程与自动化学院;漳州科华技术有限责任公司博士后工作站;
【基金】：福建省自然科学基金资助项目(2012J01257,2013-J01178)~~
【分类号】：TM711
[Abstract]:Firstly, the harmonic caused by the traditional active frequency offset (AFD) method for islanding detection is analyzed by using the fast Fourier transform. Based on the analysis results, the formula of the 3 ~ 5 ~ (th) th harmonic current caused by the traditional AFD method is obtained. The harmonic is compensated by introducing a current opposite to the phase of the harmonic current mentioned above. The implementation of the proposed AFD method with harmonic compensation in digital control system is presented. Simulation and experimental results show that the proposed method can effectively reduce the harmonic current in the system without affecting the islanding detection.
【作者单位】： 福州大学电气工程与自动化学院;漳州科华技术有限责任公司博士后工作站;
【基金】：福建省自然科学基金资助项目(2012J01257,2013-J01178)~~
【分类号】：TM711
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本文编号：2210831
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