Advantages of the Walsh Functions in the Measurement of Reactive Power in the Electric Power Systems

—In this paper a reactive power (RP) measurement method is proposed. Application of Walsh function (WF) based algorithms allowed to simplify the multiplication operations required for the evaluation the RP in the single-phase and threephase power systems. One of the unique advantage of the used method is toe eliminate the phase shift operation between the voltage and current signals that is required foe measurement of RP. Limitations and proposals for future performance enhancements of the analyzed algorithms are also discussed. The simulations performed by use of Matlab 6.5 environment have confirmed the validity of the algorithms for measuring of RP in power systems. The simulation results have demonstrated the advantages of Walsh functions in that the computational demands is substantially reduced

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