Multi-band HVDC Transmission Additional Damping Control Method Based on Multilevel Linear Optimal Theory
A high-voltage direct current transmission and additional control technology, applied in the direction of power transmission AC network, reducing/preventing power oscillation, etc., can solve the problems of controller robustness, adaptability to complex and variable power grids, etc., and achieve good resistance disturbing effect
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[0036] Such as figure 1 As shown, the controller designed by the HVDC multi-band additional control method based on multi-level linear optimal control theory includes subsynchronous oscillation suppression frequency band (I) and low frequency oscillation suppression frequency band (II); subsynchronous oscillation suppression frequency band (I) is composed of rationally adjusted band-pass filter links 1, 2...n, (Ⅲ), multi-level linear optimal control method design links 1, 2...n, (IV) and limiting links 1, 2 ... n, (Ⅴ) are connected in series to realize the function of suppressing subsynchronous oscillation; the suppression frequency band (Ⅱ) of low-frequency oscillation is composed of a reasonably tuned band-pass filter link L(Ⅲ), multi-level linear optimal control method The design link L(Ⅳ) and the limiting link L(Ⅴ) are connected in series to realize the function of suppressing low-frequency oscillation.
[0037] 1. Band-pass filter link
[0038]Analyze the oscillation ch...
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