Widely linear matrix pencil based frequency estimation in power systems

Effective frequency estimation has become one of the great challenges in power systems especially in future smart grid systems due to their varying topology and tenable supply-demand mismatch. In this paper, we have presented a Matrix pencil method (MPM) based technique for real-time frequency estimation in balanced and unbalanced power systems by exploiting widely linear model of power system. Comparison of this method was performed with recently developed CLMS and ACLMS techniques based on strictly and widely linear modeling respectively. It was observed that MPM demonstrates significantly better estimation accuracy and time resolution compared to these techniques.