Properties of Mathematical Morphology based filter for online filtering of power system signals

Mathematical Morphology (MM) has been discussed in recent literature for its possible applications in power systems. However, the properties of MM as an online filtering tool in power systems have not been adequately analyzed and discussed. This paper reports further contributions to our previous efforts in this direction. The paper points out a defect of a basic MM filter and suggests a method to correct the same. Simulation results are presented for a fault on a long transmission line simulated on PSCAD/EMTDC®. Results are analyzed and conclusions are drawn based on the analysis.

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