SVG-based frequency closed-loop control method for dynamic suppression of low-frequency oscillation in power grid
A technology of low-frequency oscillation and control method, which is applied in the direction of reducing/preventing power oscillation, flexible AC transmission system, reactive power adjustment/elimination/compensation, etc. problem, achieve the effect of solving the problem of low frequency oscillation, low cost and easy to implement
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[0045] Such as figure 1 As shown, this embodiment provides an SVG-based online frequency closed-loop control method for dynamically suppressing low-frequency oscillation of the power grid, which includes the following steps:
[0046] S100. Collect the three-phase voltage u of the power grid a ,u b ,u c .
[0047] Preferably, the built-in voltage sensor of SVG is used to realize the grid three-phase voltage u a ,u b ,u c collection.
[0048] S200. Three-phase voltage u to the power grid a ,u b ,u c Carry out tracking processing to obtain the grid frequency f. The existing frequency tracking technology can be used to monitor the grid three-phase voltage u a ,u b ,u c Perform tracking processing to realize automatic tracking of grid frequency.
[0049] Preferably, as figure 2 As shown, step S200 includes the following steps:
[0050] S201. Convert the grid three-phase voltage u a ,u b ,u c Transformed into the actual value of active voltage u d and the actual...
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