Method and system for dynamic adjustment of power synchronisation

Abstract

A method of adjusting active power synchronisation in a grid-connected electrical system. The method including the steps of determining at least one of grid voltage amplitude, internal voltage amplitude, or grid impedance during system operation, estimating the phase angle difference between the internal voltage and grid voltage, calculating estimated angle-to-active power dynamics of the system based on determining at least one of the grid voltage amplitude, internal voltage amplitude, grid impedance and the phase angle difference between the internal voltage and grid voltage, and assigning the result as Gθ-to-P,est(s), determining nominal angle-to-active power dynamics based on predefined system design parameters and assigning the result as Gθ-to-P,nom(s), calculating an adjustment gain as the ratio of Gθ-to-P,nom(s) to Gθ-to-P,est(s); and applying the adjustment gain to an active power synchronisation loop by modifying at least one control parameter or modifying the signal within the loop based on the calculated adjustment gain.

Dependencies are inferred from the claim text.