Method for suppressing sub-synchronous oscillation based on thyristor controlled reactor
A technology of thyristor control and sub-synchronous oscillation, which is applied to control generators, control systems, and reduce/prevent power oscillations. , universal applicability, the effect of suppressing subsynchronous resonance
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[0036] The specific embodiments of the present invention will be described in detail below with reference to the drawings and embodiments, but the present invention is not limited by the specific embodiments.
[0037] Use a test system such as image 3 As shown, the mechanical system shaft system is composed of 6 mass blocks, which are high pressure cylinder (HP), intermediate pressure cylinder (IP), low pressure cylinder A (LA), low pressure cylinder B (LB), generator (GEN) and excitation The machine (EXC) contains 5 torsional vibration modes. The torsional vibration frequencies of modes 1 to 5 are 15.71 Hz, 20.21 Hz, 25.55 Hz, 32.28 Hz and 47.45 Hz. The TCR is arranged on the high-voltage side of the step-up transformer, and the TCR uses a delta connection, the capacity is 10% of the generator capacity, and the reference firing angle α 0 = 135°. The connection transformer of TCR is Δ / Y connection, 539kV / 35kV, and rated capacity is 100MVA. The degree of string compensation in t...
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