Estimation of oscillation parameters for power grids

摘要

A power system grid can be modeled as a circuit of various RLC-meshes. In case of a switching event, some of those RLC-meshes are excited. These will produce additional frequency components within the power signal. In this paper, a concept which uses a priori information of these meshes for event-characterization is presented. Frequency estimations done inside specific nodes of the power system are mapped to entries of a lookup-table. Depending on this map, events can be identified/localized. This concept is based on the database-assisted parameter estimation algorithm (DaPT). In consequence, the advantages of that system (low-amplitude detection, extensibility) will be preserved.