Model-based protection system for electrical systems

摘要

The invention relates to a method and a protective system for monitoring an electrical system (3) having at least one measuring station (1), in particular an electrical energy transmission system, in particular a high-voltage direct current transmission system, comprising the following steps: - for the respective measuring station by means of memory devices (5 ) stored storing (S3) models (Ppi) of the system (3) describing a respective state of the system (3) in a respective estimating device (7) integrated in an estimating bank (9); - applying the respective estimator bank (9) by comparing (S4) values measured by the respective measuring station (1) with values of a respective model (Ppi); Determining (S5) the model (ideally Pp *) with the smallest difference between the currently measured values and the own model-specific values, the particular model (ideally Pp *) indicating the current state of the system (3).