Oscillation centre identification method based on frequency characteristics in multi-source oscillation scenes

Oscillation centre identification method based on frequency characteristics in multi-source oscillation scenes

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Concerning multi-source oscillation scenes, an oscillation centre identification method based on the variation trend of bus frequency is proposed. First, according to the amplitude and phase relationship between voltage and current at any point in the system, the functional expression of the frequency of voltage and current is derived. Then, the variation trend and distribution of the frequency of voltage and current in multi-source oscillation scenes are analysed. On this basis, the relationship between system frequency distribution and the oscillation centre and desynchronising centre is revealed, and an oscillation centre identification scheme for multi-source oscillation scenes is put forward. Simulation results based on DIgSILENT/PowerFactory demonstrate that the proposed scheme can effectively identify the location of oscillation centre in multi-source oscillation system.


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