Control parameter setting method for steam turbine speed governing system
A technology of speed regulation system and control parameters, applied in the direction of control/regulation system, adaptive control, general control system, etc., can solve the problems of lack of research, low frequency oscillation of power grid, improper setting of proportional coefficient, etc.
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[0039] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
[0040] image 3 For the simulation model of the control system, the transfer function is Where T 1 Represents the time constant of the speed transmitter, with a value of 0.02; the speed regulation sluggish rate is 0.025; the K behind the speed regulation sluggish rate link represents a frequency modulation error coefficient (that is, the speed unequal rate), and the value is 20; K p , K i , K d They are the proportional amplification factor, integral time constant, and derivative time constant of the load controller PID, which are 1, 0.05, and 0; K 2 Represents the speed feedforward control amplification factor, the parameter is set to 1, image 3 Middle 1 is the speed transmitter. 2 is PID load controller, P ref Is the given active power, P e It is the feedback power on the grid side.
[0041] Figure 4 Is the simulation model of the electro-hydrauli...
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