A Least Error Squares Technique For Determining Power System Frequency

An algorithm for measuring frequency at a power system bus is presented in this paper. The algorithm is based am the least error squares curve fitting technique and uses digitized samples of voltage at a relay locaticn. Mathematical developnent of the algorithm is presented and the effects of key parameters, that affect the performance of the algorithm, are discussed. The algorithm was tested using simulated data and data recorded fran a dynamic frequency source. Results of sample tests are also presented in this paper.