Share Email Print
cover

Proceedings Paper

A sliding DFT algorithm for electric power measurement
Author(s): Xin Tang; Xiangjun Zeng; Chunming Tu
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

With the advent of electronic meters, a variety of methods are now practical for measuring electrical quantities such as real power, reactive power and power factor etc. To reduce computation, a sliding discrete Fourier transform (DFT) algorithm for electric power measuring is presented. The sliding DFT calculates the components of utility voltages and currents described by factor Ai and Bi, which can be used to calculate power components. In the transform, the data of voltage and current are sampled synchronously, and each new DFT is efficiently computed directly from the results of the previous DFT. As a result, the overall computation time is reduced significantly. Theoretic analysis and simulation demonstrate the feasibility of the proposed method.

Paper Details

Date Published: 24 October 2006
PDF: 5 pages
Proc. SPIE 6357, Sixth International Symposium on Instrumentation and Control Technology: Signal Analysis, Measurement Theory, Photo-Electronic Technology, and Artificial Intelligence, 635724 (24 October 2006); doi: 10.1117/12.717112
Show Author Affiliations
Xin Tang, Changsha Univ. of Science and Technology (China)
Xiangjun Zeng, Changsha Univ. of Science and Technology (China)
Chunming Tu, Hunan Univ. (China)


Published in SPIE Proceedings Vol. 6357:
Sixth International Symposium on Instrumentation and Control Technology: Signal Analysis, Measurement Theory, Photo-Electronic Technology, and Artificial Intelligence
Jiancheng Fang; Zhongyu Wang, Editor(s)

© SPIE. Terms of Use
Back to Top