An improved phasor based algorithm for accurate frequency measurement

摘要：

A novel algorithm, called the improved phasor based algorithm (IPBA), to estimate the frequency of a power system is proposed. The IPBA calculates the difference of phase angles using transformed consecutive points of a DFT to reduce the leakage effects. The proposed algorithm has the following merits: it has higher precision than a conventional phasor based algorithm; it is immune to interharmonics as well as harmonics; it has simple and easy implementation; it has good performance both in steady and dynamic states. What is more, it can keep high precision in a very wide frequency deviation range, for example, 30-70 Hz for a 50 Hz system. The performance of the IPBA is compared with a phasor based algorithm through simulation experiments.

关键词： Frequency measurement Discrete Fourier Transform (DFT) Frequency domain analysis

作者: Jingwen Yu Hui Xue Boying Wen

作者单位: College of Information & Electrical Engineering. China Agricultural University, Beijing, 100083, PR China

会议类型: 国际会议

会议名称: The 4th IFIP International on Computer and Computing Technologies in Agriculture and the 4th Symposium on Development of Rural Information(第四届国际计算机及计算机技术在农业中的应用研讨会暨第四届中国农业信息化发展论坛 CCTA 2010)

会议地点: 南昌

会议语种:英文

页码: 1021-1029

在线出版日期: 2010-10-22（万方平台首次上网日期，不代表论文的发表时间）