A large-scale new energy base power grid subsynchronous oscillation control method
A technology of sub-synchronous oscillation and control method, applied in the direction of reducing/preventing power oscillation, etc., to achieve the effect of improving the degree of automation and efficiency, and saving manpower
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[0022] Such as figure 2 As shown, it is assumed that a new energy base substation has n circuits on the high-voltage side to the main grid, and m circuits on the low-voltage side to the new energy station. There are k main transformers in this station.
[0023] The implementation process of this embodiment is as follows figure 1 As shown, first monitor the three-phase current and voltage of all lines and main transformers on the high and low voltage side of the substation or new energy station in real time, and calculate the real-time power of each line; and perform FFT analysis on the real-time power to obtain the power in each frequency band subsynchronous component.
[0024] Next, judge whether there is a power sub-synchronous component in a certain line or a certain main transformer electrical quantity on the high-voltage side, and if it meets the following conditions, proceed to the following steps, otherwise exit:
[0025] (a) The magnitude of the power subsynchronous...
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