A thyristor controlled series capacitor suitable for damping sub-synchronous resonance
A technology of thyristor control and series capacitors, which is applied in the direction of electrical components, circuit devices, AC network circuits, etc.
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[0036] figure 1 The mechanical system 1 connected to the electrical system 2 is illustrated. The mechanical system includes a turbine 3 and a rotor part 4 of a generator 5 connected to the turbine by a shaft 6. The electrical system includes a stator part 7 of the generator and a network 8 connected to the generator. The mechanical shaft system is characterized by a small signal transmission function ("turbine and shaft system") from deviation of applied torque to deviation of shaft speed. The electrical system can be represented by the box "Generator & el transm system", which has a transmission function from the applied speed deviation to the electrical torque deviation. These two transfer functions are connected in cascade. The stability of the feedback system is determined by the characteristics of the electrical system.
[0037] When frequency f mech When modulating the shaft speed of the generator, its phase relative to the rest of the electrical network will change with t...
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