Title :
Power system frequency estimation method
Author :
Chudamani, R. ; Vasudevan, K. ; Ramalingam, C.S.
Author_Institution :
Indian Inst. of Madras, Chennai
Abstract :
A nonlinear least-squares approach for measuring the power system frequency is presented, wherein the voltage at the point of common coupling is modelled using the Fourier series. The fundamental frequency is estimated by performing a one-dimensional search over the range of allowed frequency variation. The robustness of this algorithm is studied and validated by hardware implementation using an FPGA. The performance of this method is also compared with that of the phase-locked loop.
Keywords :
Fourier series; field programmable gate arrays; frequency estimation; least squares approximations; phase locked loops; power systems; search problems; FPGA; Fourier series; frequency variation; nonlinear least-squares approach; one-dimensional search; phase-locked loop; power system frequency estimation method;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20080265
