A Vector Decomposion FFT Algorithm to Improve Power Network Frequency

摘要：

The measurement of power network running frequency is an important part of power quality test.For a variety of disturbances, antiinterfering and accuracy are required for the algorithm for frequency detecting.Benefited from FFT and efficient DSP chips, the Fourier transform algorithm can be used for reliable and efficient analysis of power network frequency. However, the spectrum leakage of FFT causes impact on the frequency detection accuracy, and the DSPs processing capacity is also limited. Therefore, vector decomposition window-added FFT algorithm based on fixed sampling rate and FFT points is discussed in this paper to handle the problem of impact caused by frequency leakage and to improve frequency detection accuracy.Good results can be achieved by using this algorithm as shown in the experiment.

关键词： Frequency Detection FFT Vector Decomposition

作者: Li Guo Gao Li-ke Lei Jin-yong Liu Qiang Wen Yan-jun Jiang Hai-tao Xu Wen Lu Tian-jian

作者单位: Electric Power Research Institute. CSG Guangxi Power Grid Electric Power Research Institute Nanjing Skypower Electric Automation Co.,Ltd Nanjing Skypower Electric Automation Co.,Ltd School of Automation. Southeast University China Electric Power Research Institute

会议类型: 国际会议

会议名称: International Conference on Advances in Engineering 2011(2011年工程研究进展国际学术会议 ICAE2011)

会议地点: 南京

会议语种:英文

页码: 22-27

在线出版日期: 2011-12-17（万方平台首次上网日期，不代表论文的发表时间）