Flexible DC additional control method for suppressing subsynchronous oscillation
A sub-synchronous oscillation and additional control technology, applied in the direction of reducing/preventing power oscillation, power transmission AC network, etc., can solve the problem of limited sub-synchronous oscillation suppression effect, achieve fast response, strong versatility, and easy access
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[0038] In order to make it easy to understand the technical means, creative features, objectives and effects achieved by the present invention, the technical solutions of the present invention will be further described in conjunction with specific implementations below.
[0039] figure 1 Shown is the schematic diagram of the flexible DC topology and the DC damping additional control wiring diagram that suppresses subsynchronization. The DC rectifier station includes N units of thermal power generators from G1 to GN that may produce subsynchronous oscillations. The distance between each unit and the converter bus on the rectifier side is represented by LineN. The AC voltage u of the converter bus measured by the DC rectifier station side voltage transformer abc It is sent to the flexible DC sub-synchronous damping controller, and the generated control output signal is attached to the flexible straight controller.
[0040] The flexible DC additional control method for suppressing su...
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